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Tornadoes in Chicago

Updated: Wikipedia source

Tornadoes in Chicago

Tornadoes have struck Chicago multiple times. Chicago, the largest city in Illinois and the third largest in the United States, lies in an area susceptible to severe weather year-round, with the Romeoville National Weather Service office providing continuous severe weather outlooks for Chicago and surrounding regions. The city has been struck by multiple tornadoes, including the devastating Oak Lawn tornado which struck the South Side in 1967, and a multiple vortex tornado that struck the Loop in 1876. Studies of tornadoes in the region show that as Chicago's suburbs grow, they become more susceptible to tornadoes, with the strongest tornado in the region striking Plainfield in 1990. Chicago was also the home of the severe weather researcher Ted Fujita, a professor at the University of Chicago, who extensively contributed to the scientific model of the tornado. The first tornado on record in Illinois, which struck modern-day Des Plaines, led to correspondence between a Chicago newspaper and the Smithsonian Institution, the efforts of which across the country eventually gave rise to the creation of the National Weather Service.

Tables

Confirmed tornadoes by Fujita rating · Tornadoes in the city
0
0
FU
0
F0
8
F1
4
F2
4
F3
1
F4
2
F5
0
Total
21
FU
F0
F1
F2
F3
F4
F5
Total
0
8
4
4
1
2
0
21
List of notable tornadoes in Chicago · List of tornadoes
—
—
EF#
—
Event
—
County
Cook
Date
May 22, 1855
Path length
—
Max width
—
Struck modern-day Des Plaines; the first tornado on record in Illinois. 4 were killed and 8 were injured.
Struck modern-day Des Plaines; the first tornado on record in Illinois. 4 were killed and 8 were injured.
EF#
Struck modern-day Des Plaines; the first tornado on record in Illinois. 4 were killed and 8 were injured.
—
—
EF#
—
Event
—
County
Kane, Cook, Lake
Date
June 3, 1860
Path length
15 mi (24 km)
Max width
—
Damage stretched from west of Elgin to Dundee to Lake Zurich, and 4 were injured.
Damage stretched from west of Elgin to Dundee to Lake Zurich, and 4 were injured.
EF#
Damage stretched from west of Elgin to Dundee to Lake Zurich, and 4 were injured.
F4
F4
EF#
F4
Event
—
County
Cook
Date
May 23, 1878
Path length
—
Max width
—
Killed 2 and injured 8 on its path, which started northeast of Elgin to near Barrington.
Killed 2 and injured 8 on its path, which started northeast of Elgin to near Barrington.
EF#
Killed 2 and injured 8 on its path, which started northeast of Elgin to near Barrington.
F2
F2
EF#
F2
Event
—
County
McHenry
Date
May 18, 1883
Path length
—
Max width
—
3 were killed in McHenry and neighboring Boone County by this tornado that also crossed into Wisconsin.
3 were killed in McHenry and neighboring Boone County by this tornado that also crossed into Wisconsin.
EF#
3 were killed in McHenry and neighboring Boone County by this tornado that also crossed into Wisconsin.
F2
F2
EF#
F2
Event
—
County
Will
Date
May 18, 1883
Path length
—
Max width
—
Injured 2 near Peotone.
Injured 2 near Peotone.
EF#
Injured 2 near Peotone.
F2
F2
EF#
F2
Event
—
County
McHenry
Date
June 3, 1883
Path length
—
Max width
—
Injured 1 southeast of Harvard.
Injured 1 southeast of Harvard.
EF#
Injured 1 southeast of Harvard.
F2
F2
EF#
F2
Event
—
County
Will
Date
September 18, 1886
Path length
—
Max width
—
Travelled up the Des Plaines river, striking Joliet, causing 20 injuries.
Travelled up the Des Plaines river, striking Joliet, causing 20 injuries.
EF#
Travelled up the Des Plaines river, striking Joliet, causing 20 injuries.
F2
F2
EF#
F2
Event
—
County
Will
Date
June 10, 1890
Path length
—
Max width
—
An F2 tornado destroyed two barns and killed livestock south of Channahon.:46
An F2 tornado destroyed two barns and killed livestock south of Channahon.:46
EF#
An F2 tornado destroyed two barns and killed livestock south of Channahon.:46
F2
F2
EF#
F2
Event
—
County
Cook
Date
May 25, 1896
Path length
—
Max width
—
Chicago neighborhoods impacted
Edison Park, Norwood Park
This tornado formed at the Des Plaines River at the boundary between Leyden and Maine townships, traveling east. The tornado tracked through Jefferson Township, Niles, and Park Ridge, before moving into Chicago at Edison Park. The worst damage occurred at Canfield-on-the-Hill in Edison Park. The tornado also moved through Norwood Park. In all, the tornado caused an estimated $100,000 (1896 USD, $3,780,000 adjusted) of damage throughout its track, which was mostly along the northern boundary of Chicago.:70
This tornado formed at the Des Plaines River at the boundary between Leyden and Maine townships, traveling east. The tornado tracked through Jefferson Township, Niles, and Park Ridge, before moving into Chicago at Edison Park. The worst damage occurred at Canfield-on-the-Hill in Edison Park. The tornado also moved through Norwood Park. In all, the tornado caused an estimated $100,000 (1896 USD, $3,780,000 adjusted) of damage throughout its track, which was mostly along the northern boundary of Chicago.:70
EF#
This tornado formed at the Des Plaines River at the boundary between Leyden and Maine townships, traveling east. The tornado tracked through Jefferson Township, Niles, and Park Ridge, before moving into Chicago at Edison Park. The worst damage occurred at Canfield-on-the-Hill in Edison Park. The tornado also moved through Norwood Park. In all, the tornado caused an estimated $100,000 (1896 USD, $3,780,000 adjusted) of damage throughout its track, which was mostly along the northern boundary of Chicago.:70
F2
F2
EF#
F2
Event
Great Blue Norther of November 11, 1911
County
DuPage
Date
November 11, 1911
Path length
4 mi (6.4 km)
Max width
—
Moved through wooded areas 3 miles north of Aurora, terminating near Naperville, damaging two homes.:124
Moved through wooded areas 3 miles north of Aurora, terminating near Naperville, damaging two homes.:124
EF#
Moved through wooded areas 3 miles north of Aurora, terminating near Naperville, damaging two homes.:124
F3
F3
EF#
F3
Event
Great Blue Norther of November 11, 1911
County
Lake (Indiana)
Date
November 11, 1911
Path length
30 mi (48 km)
Max width
150 yd (140 m)
Spawned near Leroy, passing west of Valparaiso.:124
Spawned near Leroy, passing west of Valparaiso.:124
EF#
Spawned near Leroy, passing west of Valparaiso.:124
—
—
EF#
—
Event
—
County
Cook
Date
April 6, 1912
Path length
—
Max width
—
Caused 18 injuries in Wilmette and Niles Center, now Skokie.
Caused 18 injuries in Wilmette and Niles Center, now Skokie.
EF#
Caused 18 injuries in Wilmette and Niles Center, now Skokie.
F4
F4
EF#
F4
Event
—
County
Will, Lake (Indiana)
Date
April 21, 1917
Path length
33 mi (53 km)
Max width
—
A tornado travelled from Manhattan to north of Crown Point, killing 3 and injuring 60.
A tornado travelled from Manhattan to north of Crown Point, killing 3 and injuring 60.
EF#
A tornado travelled from Manhattan to north of Crown Point, killing 3 and injuring 60.
F4
F4
EF#
F4
Event
—
County
Lake (Indiana)
Date
April 21, 1917
Path length
20 mi (32 km)
Max width
—
Killed 4 and injured 60, starting from south of Crown Point, near where the previous F4 tornado dissipated.
Killed 4 and injured 60, starting from south of Crown Point, near where the previous F4 tornado dissipated.
EF#
Killed 4 and injured 60, starting from south of Crown Point, near where the previous F4 tornado dissipated.
F4
F4
EF#
F4
Event
1920 Palm Sunday tornado outbreak
County
Will, DuPage, Cook
Date
March 28, 1920
Path length
53 mi (85 km)
Max width
100 yd (91 m)
Chicago neighborhoods impacted
Dunning
A family of tornadoes peaking at F4 intensity moved through Channahon, Troy, and Lockport townships, before reaching peak intensity past the DuPage county border and striking Bellwood, Maywood, Melrose Park, Dunning, and Wilmette. 20 were killed and a further 300 injured throughout the tornado family's path.:161
A family of tornadoes peaking at F4 intensity moved through Channahon, Troy, and Lockport townships, before reaching peak intensity past the DuPage county border and striking Bellwood, Maywood, Melrose Park, Dunning, and Wilmette. 20 were killed and a further 300 injured throughout the tornado family's path.:161
EF#
A family of tornadoes peaking at F4 intensity moved through Channahon, Troy, and Lockport townships, before reaching peak intensity past the DuPage county border and striking Bellwood, Maywood, Melrose Park, Dunning, and Wilmette. 20 were killed and a further 300 injured throughout the tornado family's path.:161
F3
F3
EF#
F3
Event
1920 Palm Sunday tornado outbreak
County
Lake (Indiana)
Date
March 28, 1920
Path length
7 mi (11 km)
Max width
100 yd (91 m)
After spawning near Leroy, this tornado moved northeast, damaging seven homes.:162
After spawning near Leroy, this tornado moved northeast, damaging seven homes.:162
EF#
After spawning near Leroy, this tornado moved northeast, damaging seven homes.:162
F2
F2
EF#
F2
Event
—
County
DuPage
Date
September 11, 1925
Path length
7 mi (11 km)
Max width
300 yd (270 m)
Moved northeast towards Wheaton. 25 homes were damaged, as was agricultural infrastructure. One injury was recorded.:194
Moved northeast towards Wheaton. 25 homes were damaged, as was agricultural infrastructure. One injury was recorded.:194
EF#
Moved northeast towards Wheaton. 25 homes were damaged, as was agricultural infrastructure. One injury was recorded.:194
F2
F2
EF#
F2
Event
—
County
Cook
Date
May 18, 1926
Path length
3 mi (4.8 km)
Max width
100 yd (91 m)
An F2 tornado moved through Harvey, causing damage to residential areas and factories, skipping over Harvey's downtown, killing livestock, and injuring 6.:196
An F2 tornado moved through Harvey, causing damage to residential areas and factories, skipping over Harvey's downtown, killing livestock, and injuring 6.:196
EF#
An F2 tornado moved through Harvey, causing damage to residential areas and factories, skipping over Harvey's downtown, killing livestock, and injuring 6.:196
EF3/F4
EF3/F4
EF#
EF3/F4
Event
1928 Rockford tornado
County
McHenry
Date
September 14, 1928
Path length
26 mi (42 km)
Max width
~166 yd (152 m)
A strong tornado moved through the Rockford area in Winnebago County before crossing into Boone County and later McHenry County. 14 people were killed and at least 100 others were injured.:215 In 2023, the National Weather Service rated the tornado as an EF3, while Fujita rated the tornado as an F4 in 1990.
A strong tornado moved through the Rockford area in Winnebago County before crossing into Boone County and later McHenry County. 14 people were killed and at least 100 others were injured.:215 In 2023, the National Weather Service rated the tornado as an EF3, while Fujita rated the tornado as an F4 in 1990.
EF#
A strong tornado moved through the Rockford area in Winnebago County before crossing into Boone County and later McHenry County. 14 people were killed and at least 100 others were injured.:215 In 2023, the National Weather Service rated the tornado as an EF3, while Fujita rated the tornado as an F4 in 1990.
F2
F2
EF#
F2
Event
—
County
Cook
Date
May 5, 1930
Path length
—
Max width
30 yd (27 m)
Moved four blocks through Maywood.:227
Moved four blocks through Maywood.:227
EF#
Moved four blocks through Maywood.:227
F2
F2
EF#
F2
Event
—
County
Kane
Date
April 30, 1933
Path length
2.5 mi (4.0 km)
Max width
100 yd (91 m)
Damaged barns and unroofed the high school in Plato Center, causing 3 injuries.:243
Damaged barns and unroofed the high school in Plato Center, causing 3 injuries.:243
EF#
Damaged barns and unroofed the high school in Plato Center, causing 3 injuries.:243
F?
F?
EF#
F?
Event
—
County
Cook
Date
May 1, 1933
Path length
—
Max width
—
Chicago neighborhoods impacted
Not specified
Fujita records a tornado struck the city on May 1, 1933, causing an estimated $1,300,000 (1961 USD; $13,679,000 adjusted) of damage.
Fujita records a tornado struck the city on May 1, 1933, causing an estimated $1,300,000 (1961 USD; $13,679,000 adjusted) of damage.
EF#
Fujita records a tornado struck the city on May 1, 1933, causing an estimated $1,300,000 (1961 USD; $13,679,000 adjusted) of damage.
F3
F3
EF#
F3
Event
—
County
Will
Date
April 7, 1948
Path length
—
Max width
—
Crossing from Grundy county, this tornado struck Braidwood, causing 1 injury across its entire path.
Crossing from Grundy county, this tornado struck Braidwood, causing 1 injury across its entire path.
EF#
Crossing from Grundy county, this tornado struck Braidwood, causing 1 injury across its entire path.
F4
F4
EF#
F4
Event
—
County
Lake (Indiana)
Date
April 7, 1948
Path length
40 mi (64 km)
Max width
—
Over 40 miles from west of Manteno to south of Hebron, this tornado killed 4 and injured 20 across Kankakee (Illinois), Lake, Porter, and Jasper (Indiana) Counties.
Over 40 miles from west of Manteno to south of Hebron, this tornado killed 4 and injured 20 across Kankakee (Illinois), Lake, Porter, and Jasper (Indiana) Counties.
EF#
Over 40 miles from west of Manteno to south of Hebron, this tornado killed 4 and injured 20 across Kankakee (Illinois), Lake, Porter, and Jasper (Indiana) Counties.
F2
F2
EF#
F2
Event
—
County
Cook, Lake (Indiana)
Date
April 7, 1948
Path length
30 mi (48 km)
Max width
—
This F2 tornado started in Calumet City and ended south of Michigan City, injuring 11.
This F2 tornado started in Calumet City and ended south of Michigan City, injuring 11.
EF#
This F2 tornado started in Calumet City and ended south of Michigan City, injuring 11.
F2
F2
EF#
F2
Event
—
County
Lake, Indiana
Date
November 13, 1951
Path length
3 mi (480 m)
Max width
400 yd (370 m)
Moved through the Gary subdivision of Glen Park, causing damage primarily to roof structures.page number needed
Moved through the Gary subdivision of Glen Park, causing damage primarily to roof structures.page number needed
EF#
Moved through the Gary subdivision of Glen Park, causing damage primarily to roof structures.page number needed
F2
F2
EF#
F2
Event
—
County
Kane
Date
May 27, 1954
Path length
—
Max width
—
A tornado moved through Kane County at the city limits of Aurora.:374
A tornado moved through Kane County at the city limits of Aurora.:374
EF#
A tornado moved through Kane County at the city limits of Aurora.:374
F2
F2
EF#
F2
Event
—
County
Lake, Indiana
Date
June 1, 1954
Path length
—
Max width
33 yd (30 m)
F2, 0 miles, 33 yards, 0 casualties, 25k damage.
F2, 0 miles, 33 yards, 0 casualties, 25k damage.
EF#
F2, 0 miles, 33 yards, 0 casualties, 25k damage.
F?
F?
EF#
F?
Event
—
County
Cook
Date
April 18, 1955
Path length
—
Max width
—
Chicago neighborhoods impacted
"extreme northern part" of Chicago
Fujita records that a tornado struck areas of extreme northern Chicago and Evanston.
Fujita records that a tornado struck areas of extreme northern Chicago and Evanston.
EF#
Fujita records that a tornado struck areas of extreme northern Chicago and Evanston.
F1
F1
EF#
F1
Event
1955 Great Plains tornado outbreak
County
Cook
Date
May 26, 1955
Path length
1.5 mi (2.4 km)
Max width
100 yd (91 m)
This tornado never properly entered the city but touched its southwestern border, approaching from Blue Island.
This tornado never properly entered the city but touched its southwestern border, approaching from Blue Island.
EF#
This tornado never properly entered the city but touched its southwestern border, approaching from Blue Island.
F2
F2
EF#
F2
Event
—
County
Cook
Date
August 23, 1956
Path length
—
Max width
—
An F2 tornado injured 3 in Tinley Park. It was the strongest of 3 tornadoes in the area that day.:392
An F2 tornado injured 3 in Tinley Park. It was the strongest of 3 tornadoes in the area that day.:392
EF#
An F2 tornado injured 3 in Tinley Park. It was the strongest of 3 tornadoes in the area that day.:392
F2
F2
EF#
F2
Event
—
County
Kane
Date
August 23, 1956
Path length
—
Max width
40 yd (37 m)
F2, 0 miles, 40 yards, 0 casualties, 25k damage.
F2, 0 miles, 40 yards, 0 casualties, 25k damage.
EF#
F2, 0 miles, 40 yards, 0 casualties, 25k damage.
F2
F2
EF#
F2
Event
—
County
Lake, Indiana
Date
July 12, 1957
Path length
—
Max width
27 yd (25 m)
F2, 0 miles, 27 yards, 0 casualties, 250k damage.
F2, 0 miles, 27 yards, 0 casualties, 250k damage.
EF#
F2, 0 miles, 27 yards, 0 casualties, 250k damage.
F2
F2
EF#
F2
Event
—
County
Kane
Date
August 6, 1958
Path length
2 mi (3.2 km)
Max width
70 yd (64 m)
F2, 2 miles, 70 yards, 0 casualties, 250k damage.
F2, 2 miles, 70 yards, 0 casualties, 250k damage.
EF#
F2, 2 miles, 70 yards, 0 casualties, 250k damage.
F2
F2
EF#
F2
Event
—
County
Will
Date
August 15, 1958
Path length
70 mi (110 km)
Max width
—
A long-tracked tornado family began near Dixon and struck Joliet.
A long-tracked tornado family began near Dixon and struck Joliet.
EF#
A long-tracked tornado family began near Dixon and struck Joliet.
F1
F1
EF#
F1
Event
—
County
Cook
Date
August 30, 1958
Path length
1 mi (1.6 km)
Max width
70 yd (64 m)
Chicago neighborhoods impacted
"Southernmost part"
Fujita records that tornado struck the southernmost part of Chicago.
Fujita records that tornado struck the southernmost part of Chicago.
EF#
Fujita records that tornado struck the southernmost part of Chicago.
F2
F2
EF#
F2
Event
—
County
McHenry, Lake
Date
October 9, 1958
Path length
48 mi (77 km)
Max width
—
This tornado began west of Harvard and ended near Waukegan, killing 1.
This tornado began west of Harvard and ended near Waukegan, killing 1.
EF#
This tornado began west of Harvard and ended near Waukegan, killing 1.
F2
F2
EF#
F2
Event
—
County
Lake
Date
October 9, 1958
Path length
16.7 mi (26.9 km)
Max width
33 yd (30 m)
2.5 million damage, 0 casualties.
2.5 million damage, 0 casualties.
EF#
2.5 million damage, 0 casualties.
F2
F2
EF#
F2
Event
—
County
McHenry
Date
October 9, 1958
Path length
26.2 mi (42.2 km)
Max width
33 yd (30 m)
F2, 26.2 miles, 33 yards, 1 death, 2.5 million damage.
F2, 26.2 miles, 33 yards, 1 death, 2.5 million damage.
EF#
F2, 26.2 miles, 33 yards, 1 death, 2.5 million damage.
F2
F2
EF#
F2
Event
—
County
DuPage
Date
September 26, 1959
Path length
9.3 mi (15.0 km)
Max width
33 yd (30 m)
DU PAGE - F2, 9.3 miles, 33 yards, 0 casualties, 250k damage.
DU PAGE - F2, 9.3 miles, 33 yards, 0 casualties, 250k damage.
EF#
DU PAGE - F2, 9.3 miles, 33 yards, 0 casualties, 250k damage.
F2
F2
EF#
F2
Event
—
County
McHenry
Date
September 26, 1959
Path length
—
Max width
—
An F2 tornado injured 1 near the city of McHenry.
An F2 tornado injured 1 near the city of McHenry.
EF#
An F2 tornado injured 1 near the city of McHenry.
F2
F2
EF#
F2
Event
—
County
McHenry
Date
October 8, 1959
Path length
2 mi (3.2 km)
Max width
90 yd (82 m)
Moved along the edge of Fox Lake in the city of McHenry.:417
Moved along the edge of Fox Lake in the city of McHenry.:417
EF#
Moved along the edge of Fox Lake in the city of McHenry.:417
F2
F2
EF#
F2
Event
—
County
Cook
Date
March 4, 1961
Path length
7.9 mi (12.7 km)
Max width
100 yd (91 m)
Chicago neighborhoods impacted
South Side, Chatham
A tornado began just outside of city limits before moving 6.5 mi (10.5 km) through Chicago's South Side, killing 1 and injuring 114 more. It was the most destructive of the 10 recorded in the city since 1871, causing an estimated $7 million (1961 USD, $73,656,000 adjusted) throughout the city. Significant damage to houses and trees occurred, as did a significant wind event in Homewood. Fujita, who surveyed this tornado from a helicopter, noticed how some homes had trees uprooted and their garages destroyed, while nearby property merely had shingle and window damage.
A tornado began just outside of city limits before moving 6.5 mi (10.5 km) through Chicago's South Side, killing 1 and injuring 114 more. It was the most destructive of the 10 recorded in the city since 1871, causing an estimated $7 million (1961 USD, $73,656,000 adjusted) throughout the city. Significant damage to houses and trees occurred, as did a significant wind event in Homewood. Fujita, who surveyed this tornado from a helicopter, noticed how some homes had trees uprooted and their garages destroyed, while nearby property merely had shingle and window damage.
EF#
A tornado began just outside of city limits before moving 6.5 mi (10.5 km) through Chicago's South Side, killing 1 and injuring 114 more. It was the most destructive of the 10 recorded in the city since 1871, causing an estimated $7 million (1961 USD, $73,656,000 adjusted) throughout the city. Significant damage to houses and trees occurred, as did a significant wind event in Homewood. Fujita, who surveyed this tornado from a helicopter, noticed how some homes had trees uprooted and their garages destroyed, while nearby property merely had shingle and window damage.
F3
F3
EF#
F3
Event
Tornado outbreak sequence of April 23–30, 1961
County
Lake, Indiana
Date
April 23, 1961
Path length
15.4 mi (24.8 km)
Max width
33 yd (30 m)
An F3 tornado struck Lowell, Shelby, and Roselawn in Lake and Newton Counties.:428
An F3 tornado struck Lowell, Shelby, and Roselawn in Lake and Newton Counties.:428
EF#
An F3 tornado struck Lowell, Shelby, and Roselawn in Lake and Newton Counties.:428
F3
F3
EF#
F3
Event
Tornado outbreak sequence of April 23–30, 1961
County
Will
Date
April 23, 1961
Path length
36.3 mi (58.4 km)
Max width
33 yd (30 m)
Damaged and destroyed homes from Lorenzo to Symerton to Beecher, injuring 4.:428
Damaged and destroyed homes from Lorenzo to Symerton to Beecher, injuring 4.:428
EF#
Damaged and destroyed homes from Lorenzo to Symerton to Beecher, injuring 4.:428
F2
F2
EF#
F2
Event
—
County
Cook
Date
June 23, 1962
Path length
5 mi (0.80 km)
Max width
150 yd (140 m)
A tornado damaged 14 homes in the El Vista subdivision of Oak Forest.:437
A tornado damaged 14 homes in the El Vista subdivision of Oak Forest.:437
EF#
A tornado damaged 14 homes in the El Vista subdivision of Oak Forest.:437
F2
F2
EF#
F2
Event
—
County
Lake, Indiana
Date
July 20, 1962
Path length
14.9 mi (24.0 km)
Max width
33 yd (30 m)
A tornado struck Griffith, Ross, and Crocker, unroofing a church at Griffith.:437
A tornado struck Griffith, Ross, and Crocker, unroofing a church at Griffith.:437
EF#
A tornado struck Griffith, Ross, and Crocker, unroofing a church at Griffith.:437
F2
F2
EF#
F2
Event
—
County
McHenry
Date
April 19, 1963
Path length
—
Max width
33 yd (0.030 km)
F2, 0 miles, 33 yards, 0 casualties, 250k damage.
F2, 0 miles, 33 yards, 0 casualties, 250k damage.
EF#
F2, 0 miles, 33 yards, 0 casualties, 250k damage.
F4
F4
EF#
F4
Event
1965 Palm Sunday tornado outbreak
County
McHenry, Lake
Date
April 11, 1965
Path length
11 mi (18 km)
Max width
400 yd (370 m)
Crystal Lake to Island Lake to N of Wauconda. Major damage occurred throughout Crystal Lake and Island Lake from this violent tornado that killed 6 and injured a further 75.:456
Crystal Lake to Island Lake to N of Wauconda. Major damage occurred throughout Crystal Lake and Island Lake from this violent tornado that killed 6 and injured a further 75.:456
EF#
Crystal Lake to Island Lake to N of Wauconda. Major damage occurred throughout Crystal Lake and Island Lake from this violent tornado that killed 6 and injured a further 75.:456
F2
F2
EF#
F2
Event
1965 Palm Sunday tornado outbreak
County
Lake
Date
April 11, 1965
Path length
4.5 mi (7.2 km)–6 mi (9.7 km)
Max width
175 yd (160 m)–200 yd (180 m)
A waterspout over Druce Lake came ashore and caused damage to a dozen homes in Gurnee.:457
A waterspout over Druce Lake came ashore and caused damage to a dozen homes in Gurnee.:457
EF#
A waterspout over Druce Lake came ashore and caused damage to a dozen homes in Gurnee.:457
F2
F2
EF#
F2
Event
—
County
DuPage
Date
May 26, 1965
Path length
13.8 mi (22.2 km)
Max width
70 yd (64 m)
Chicago neighborhoods impacted
O'Hare
This skipping tornado moved from northwest of Wheaton to O'Hare, damaging 30 cars at the latter, causing 11 injuries.:469
This skipping tornado moved from northwest of Wheaton to O'Hare, damaging 30 cars at the latter, causing 11 injuries.:469
EF#
This skipping tornado moved from northwest of Wheaton to O'Hare, damaging 30 cars at the latter, causing 11 injuries.:469
F2
F2
EF#
F2
Event
—
County
Will
Date
November 12, 1965
Path length
24.5 mi (39.4 km)
Max width
120 yd (110 m)
F2, 24.5 miles, 120 yards, 2 deaths, 90 injuries, 25m damage. Morris to NE of Channahon to Preston Heights to Tinley Park.
F2, 24.5 miles, 120 yards, 2 deaths, 90 injuries, 25m damage. Morris to NE of Channahon to Preston Heights to Tinley Park.
EF#
F2, 24.5 miles, 120 yards, 2 deaths, 90 injuries, 25m damage. Morris to NE of Channahon to Preston Heights to Tinley Park.
F3
F3
EF#
F3
Event
—
County
Lake, Indiana
Date
November 12, 1965
Path length
4.1 mi (6.6 km)
Max width
40 yd (37 m)
F3, 4.1 miles, 40 yards, 14 injuries, 250k damage. Two elementary schools were damaged.
F3, 4.1 miles, 40 yards, 14 injuries, 250k damage. Two elementary schools were damaged.
EF#
F3, 4.1 miles, 40 yards, 14 injuries, 250k damage. Two elementary schools were damaged.
F2
F2
EF#
F2
Event
—
County
DuPage
Date
November 12, 1965
Path length
1 mi (1.6 km)
Max width
20 yd (18 m)
F2, 1 mile, 20 yards, 0 casualties, 25k damage.
F2, 1 mile, 20 yards, 0 casualties, 25k damage.
EF#
F2, 1 mile, 20 yards, 0 casualties, 25k damage.
F2
F2
EF#
F2
Event
—
County
DuPage
Date
April 19, 1966
Path length
5 mi (0.80 km)
Max width
40 yd (37 m)
Caused damage to around 40 homes. Grazulis records the path as starting north of Lisle, while Storm Data records the path as from Lisle to Valley View.:474
Caused damage to around 40 homes. Grazulis records the path as starting north of Lisle, while Storm Data records the path as from Lisle to Valley View.:474
EF#
Caused damage to around 40 homes. Grazulis records the path as starting north of Lisle, while Storm Data records the path as from Lisle to Valley View.:474
F2
F2
EF#
F2
Event
—
County
Lake, Indiana
Date
July 13, 1966
Path length
—
Max width
33 yd (30 m)
F2, 0 miles, 33 yards, 0 casualties, 25k damage.
F2, 0 miles, 33 yards, 0 casualties, 25k damage.
EF#
F2, 0 miles, 33 yards, 0 casualties, 25k damage.
F4
F4
EF#
F4
Event
1967 Oak Lawn tornado outbreak
County
Lake
Date
April 21, 1967
Path length
4.5 mi (7.2 km)
Max width
150 yd (140 m)
F4, 4.5 miles, 150 yards, 1 fatality, 97 injuries, 2.5 million damage. 1967 Oak Lawn Lake Zurich tornado.
F4, 4.5 miles, 150 yards, 1 fatality, 97 injuries, 2.5 million damage. 1967 Oak Lawn Lake Zurich tornado.
EF#
F4, 4.5 miles, 150 yards, 1 fatality, 97 injuries, 2.5 million damage. 1967 Oak Lawn Lake Zurich tornado.
F2
F2
EF#
F2
Event
1967 Oak Lawn tornado outbreak
County
Kane
Date
April 21, 1967
Path length
3 mi (480 m)
Max width
33 yd (30 m)
F2, .3 miles, 33 yards, 0 casualties, 250k damage. Damage at Elgin State Hospital. Considered a separate tornado from the Lake Zurich F4.
F2, .3 miles, 33 yards, 0 casualties, 250k damage. Damage at Elgin State Hospital. Considered a separate tornado from the Lake Zurich F4.
EF#
F2, .3 miles, 33 yards, 0 casualties, 250k damage. Damage at Elgin State Hospital. Considered a separate tornado from the Lake Zurich F4.
F4
F4
EF#
F4
Event
1967 Belvidere tornado
County
McHenry
Date
April 21, 1967
Path length
14 mi (23 km)
Max width
1,200 yd (1,100 m)
F4, 14 miles, 1200 yards, 40 injuries, 25 million damage.
F4, 14 miles, 1200 yards, 40 injuries, 25 million damage.
EF#
F4, 14 miles, 1200 yards, 40 injuries, 25 million damage.
F4
F4
EF#
F4
Event
Oak Lawn tornado
County
Cook
Date
April 21, 1967
Path length
16 mi (26 km)
Max width
200 yd (180 m)
Chicago neighborhoods impacted
South Side
Struck Palos Hills, Oak Lawn, Hometown, Evergreen Park, and finally Chicago's South Side, killing 33 and injuring 500, notably at an intersection during rush hour traffic.:483
Struck Palos Hills, Oak Lawn, Hometown, Evergreen Park, and finally Chicago's South Side, killing 33 and injuring 500, notably at an intersection during rush hour traffic.:483
EF#
Struck Palos Hills, Oak Lawn, Hometown, Evergreen Park, and finally Chicago's South Side, killing 33 and injuring 500, notably at an intersection during rush hour traffic.:483
F2
F2
EF#
F2
Event
—
County
Cook
Date
April 30, 1970
Path length
4.9 mi (7.9 km)
Max width
33 yd (30 m)
Chicago neighborhoods impacted
"northwest Chicago"
A tornado was reported in northwestern Chicago, damaging trees, windows, and power lines.
A tornado was reported in northwestern Chicago, damaging trees, windows, and power lines.
EF#
A tornado was reported in northwestern Chicago, damaging trees, windows, and power lines.
F2
F2
EF#
F2
Event
—
County
DuPage
Date
August 24, 1971
Path length
1 mi (1.6 km)
Max width
83 yd (76 m)
A tornado moved east through southern Naperville, causing damage to 16 homes and injuring 2.:521
A tornado moved east through southern Naperville, causing damage to 16 homes and injuring 2.:521
EF#
A tornado moved east through southern Naperville, causing damage to 16 homes and injuring 2.:521
F2
F2
EF#
F2
Event
—
County
Will
Date
April 6, 1972
Path length
6.8 mi (10.9 km)
Max width
50 yd (46 m)
F2, 6.8 miles, 50 yards, 1 death, 22 injuries, 250k damage.
F2, 6.8 miles, 50 yards, 1 death, 22 injuries, 250k damage.
EF#
F2, 6.8 miles, 50 yards, 1 death, 22 injuries, 250k damage.
F2
F2
EF#
F2
Event
—
County
Will
Date
April 6, 1972
Path length
5.1 mi (8.2 km)
Max width
50 yd (46 m)
F2, 5.1 miles, 50 yards, 0 casualties, 250k damage.
F2, 5.1 miles, 50 yards, 0 casualties, 250k damage.
EF#
F2, 5.1 miles, 50 yards, 0 casualties, 250k damage.
F2
F2
EF#
F2
Event
—
County
DuPage
Date
July 17, 1972
Path length
—
Max width
33 yd (30 m)
F2, 0 miles, 33 yards, 0 casualties, 2.5m damage. Likely non-tornadic downburst event in Glen Ellyn and southern Wheaton, with large hail and flooding.
F2, 0 miles, 33 yards, 0 casualties, 2.5m damage. Likely non-tornadic downburst event in Glen Ellyn and southern Wheaton, with large hail and flooding.
EF#
F2, 0 miles, 33 yards, 0 casualties, 2.5m damage. Likely non-tornadic downburst event in Glen Ellyn and southern Wheaton, with large hail and flooding.
F4
F4
EF#
F4
Event
1972 North Chicago tornado
County
Lake
Date
September 28, 1972
Path length
5.2 mi (8.4 km)
Max width
220 yd (200 m)
F4, 5.2 miles, 220 yards, 20 injuries, 2.5 million damage.
F4, 5.2 miles, 220 yards, 20 injuries, 2.5 million damage.
EF#
F4, 5.2 miles, 220 yards, 20 injuries, 2.5 million damage.
F3
F3
EF#
F3
Event
—
County
Lake, Indiana
Date
June 20, 1974
Path length
4.5 mi (7.2 km)
Max width
150 yd (140 m)
F3, 4.5 miles, 150 yards, 5 injuries, 250k damage. Homes, commercial structures, and cars were damaged in Lowell.
F3, 4.5 miles, 150 yards, 5 injuries, 250k damage. Homes, commercial structures, and cars were damaged in Lowell.
EF#
F3, 4.5 miles, 150 yards, 5 injuries, 250k damage. Homes, commercial structures, and cars were damaged in Lowell.
F3
F3
EF#
F3
Event
—
County
DuPage
Date
March 12, 1976
Path length
14.8 mi (23.8 km)
Max width
30 yd (27 m)
F3, 14.8 miles, 30 yards, 3 injuries, 2.5m damage.
F3, 14.8 miles, 30 yards, 3 injuries, 2.5m damage.
EF#
F3, 14.8 miles, 30 yards, 3 injuries, 2.5m damage.
F2
F2
EF#
F2
Event
—
County
DuPage
Date
March 12, 1976
Path length
—
Max width
150 yd (140 m)
F2, 0 miles, 150 yards, 25 injuries, 2.5m damage.
F2, 0 miles, 150 yards, 25 injuries, 2.5m damage.
EF#
F2, 0 miles, 150 yards, 25 injuries, 2.5m damage.
F2
F2
EF#
F2
Event
—
County
Lake, Indiana
Date
March 12, 1976
Path length
2.3 mi (3.7 km)
Max width
200 yd (180 m)
F2, 2.3 miles, 200 yards, 0 casualties, 2.5k damage. Deep River.
F2, 2.3 miles, 200 yards, 0 casualties, 2.5k damage. Deep River.
EF#
F2, 2.3 miles, 200 yards, 0 casualties, 2.5k damage. Deep River.
F2
F2
EF#
F2
Event
—
County
Lake
Date
April 20, 1976
Path length
8 mi (1.3 km)
Max width
50 yd (46 m)
F2, .8 miles, 50 yards, 2 injuries, 25k damage.
F2, .8 miles, 50 yards, 2 injuries, 25k damage.
EF#
F2, .8 miles, 50 yards, 2 injuries, 25k damage.
F4
F4
EF#
F4
Event
—
County
Cook, DuPage
Date
June 13, 1976
Path length
—
Max width
1,760 yd (1,610 m)
The tornado moved in an unusual "J-shaped" path, striking Lemont, Darien, and areas south of Downers Grove. This tornado also ripped the roof off of a building housing a nuclear reactor at Argonne National Laboratory.:581
The tornado moved in an unusual "J-shaped" path, striking Lemont, Darien, and areas south of Downers Grove. This tornado also ripped the roof off of a building housing a nuclear reactor at Argonne National Laboratory.:581
EF#
The tornado moved in an unusual "J-shaped" path, striking Lemont, Darien, and areas south of Downers Grove. This tornado also ripped the roof off of a building housing a nuclear reactor at Argonne National Laboratory.:581
F2
F2
EF#
F2
Event
—
County
Lake (IN)
Date
June 30, 1977
Path length
6.8 mi (10.9 km)
Max width
300 yd (270 m)
This tornado began in a swamp, moving through downtown Hobart, and dissipating northwest of South Haven.:590
This tornado began in a swamp, moving through downtown Hobart, and dissipating northwest of South Haven.:590
EF#
This tornado began in a swamp, moving through downtown Hobart, and dissipating northwest of South Haven.:590
F1
F1
EF#
F1
Event
—
County
Cook
Date
April 18, 1978
Path length
6.1 mi (9.8 km)
Max width
177 yd (162 m)
Chicago neighborhoods impacted
Midway
Knocked over a Cessna 172 at Midway field.
Knocked over a Cessna 172 at Midway field.
EF#
Knocked over a Cessna 172 at Midway field.
F2
F2
EF#
F2
Event
—
County
McHenry
Date
August 15, 1978
Path length
2 mi (3.2 km)
Max width
100 yd (91 m)
F2, 2 miles, 100 yards, 0 casualties, 250k damage.
F2, 2 miles, 100 yards, 0 casualties, 250k damage.
EF#
F2, 2 miles, 100 yards, 0 casualties, 250k damage.
F2
F2
EF#
F2
Event
Western Wisconsin Derecho
County
Kane
Date
July 16, 1980
Path length
1.4 mi (2.3 km)
Max width
440 yd (400 m)
F2, 1.4 miles, 440 yards, 0 casualties, 250k damage. Damage to agricultural infrastructure, 48k pounds of grain lost.
F2, 1.4 miles, 440 yards, 0 casualties, 250k damage. Damage to agricultural infrastructure, 48k pounds of grain lost.
EF#
F2, 1.4 miles, 440 yards, 0 casualties, 250k damage. Damage to agricultural infrastructure, 48k pounds of grain lost.
F3
F3
EF#
F3
Event
—
County
Will
Date
April 27, 1984
Path length
4 mi (6.4 km)
Max width
200 yd (180 m)
F3, 4 miles, 200 yards, 1 death, 5 injuries, 2.5m damage. Kendall County to Plainfield to Plainsman Terrace.
F3, 4 miles, 200 yards, 1 death, 5 injuries, 2.5m damage. Kendall County to Plainfield to Plainsman Terrace.
EF#
F3, 4 miles, 200 yards, 1 death, 5 injuries, 2.5m damage. Kendall County to Plainfield to Plainsman Terrace.
F2
F2
EF#
F2
Event
—
County
Will
Date
April 5, 1988
Path length
23 mi (37 km)
Max width
50 yd (46 m)
F2, 23 miles, 50 yards, 0 casualties, unspecified damage.
F2, 23 miles, 50 yards, 0 casualties, unspecified damage.
EF#
F2, 23 miles, 50 yards, 0 casualties, unspecified damage.
F5
F5
EF#
F5
Event
1990 Plainfield tornado
County
Will
Date
August 28, 1990
Path length
11.2 mi (18.0 km)
Max width
600 yd (550 m)
1990 Plainfield tornado - F5, 11.2 miles, 600 yards, 29 deaths, 350 injuries, 250m damage.
1990 Plainfield tornado - F5, 11.2 miles, 600 yards, 29 deaths, 350 injuries, 250m damage.
EF#
1990 Plainfield tornado - F5, 11.2 miles, 600 yards, 29 deaths, 350 injuries, 250m damage.
F3
F3
EF#
F3
Event
—
County
Will
Date
March 27, 1991
Path length
3 mi (4.8 km)
Max width
200 yd (180 m)
F3, 3 miles, 200 yards, 0 casualties, 25m damage. Romeoville to Lemont to Willow Springs. "Only a few" injuries.
F3, 3 miles, 200 yards, 0 casualties, 25m damage. Romeoville to Lemont to Willow Springs. "Only a few" injuries.
EF#
F3, 3 miles, 200 yards, 0 casualties, 25m damage. Romeoville to Lemont to Willow Springs. "Only a few" injuries.
F2
F2
EF#
F2
Event
—
County
Will
Date
August 15, 1993
Path length
3 mi (480 m)
Max width
20 yd (18 m)
F2, .3 miles, 20 yards, 0 casualties, 500k damage. Brief tornado in New Lenox.
F2, .3 miles, 20 yards, 0 casualties, 500k damage. Brief tornado in New Lenox.
EF#
F2, .3 miles, 20 yards, 0 casualties, 500k damage. Brief tornado in New Lenox.
F2
F2
EF#
F2
Event
Tornado outbreak sequence of April 1996
County
Lake
Date
April 19, 1996
Path length
2 mi (3.2 km)
Max width
100 yd (91 m)
F2, 2 miles, 100 yards, 2 injuries, 6.6 million damage.
F2, 2 miles, 100 yards, 2 injuries, 6.6 million damage.
EF#
F2, 2 miles, 100 yards, 2 injuries, 6.6 million damage.
F2
F2
EF#
F2
Event
—
County
Lake
Date
May 18, 1997
Path length
6 mi (9.7 km)
Max width
75 yd (69 m)
F2, 6 miles, 75 yards. 0 casualties, unspecified damage cost.
F2, 6 miles, 75 yards. 0 casualties, unspecified damage cost.
EF#
F2, 6 miles, 75 yards. 0 casualties, unspecified damage cost.
F0
F0
EF#
F0
Event
Tornado outbreak of September 21–23, 2006
County
Cook
Date
September 22, 2006
Path length
3 mi (0.48 km)
Max width
50 yd (46 m)
Chicago neighborhoods impacted
Loyola University campus
A brief tornado was filmed at Loyola University Chicago, causing tree damage before moving over Lake Michigan.
A brief tornado was filmed at Loyola University Chicago, causing tree damage before moving over Lake Michigan.
EF#
A brief tornado was filmed at Loyola University Chicago, causing tree damage before moving over Lake Michigan.
EF3
EF3
EF#
EF3
Event
Tornado outbreak sequence of January 7–11, 2008
County
McHenry
Date
January 7, 2008
Path length
6.3 mi (10.1 km)
Max width
100 yd (91 m)
EF3, 6.3 miles, 100 yards, 1 injury, 2 million damage.
EF3, 6.3 miles, 100 yards, 1 injury, 2 million damage.
EF#
EF3, 6.3 miles, 100 yards, 1 injury, 2 million damage.
EF2
EF2
EF#
EF2
Event
Tornado outbreak sequence of June 3–11, 2008
County
Will
Date
June 7, 2008
Path length
14.12 mi (22.72 km)
Max width
200 yd (180 m)
EF2, 14.12 miles, 200 yards, 0 casualties, 500k damage. Essex.
EF2, 14.12 miles, 200 yards, 0 casualties, 500k damage. Essex.
EF#
EF2, 14.12 miles, 200 yards, 0 casualties, 500k damage. Essex.
EF2
EF2
EF#
EF2
Event
Tornado outbreak sequence of June 3–11, 2008
County
Will
Date
June 7, 2008
Path length
2.16 mi (3.48 km)
Max width
400 yd (370 m)
EF2, 2.16 miles, 400 yards, 0 casualties, 50k damage. NE of Wilton Center.
EF2, 2.16 miles, 400 yards, 0 casualties, 50k damage. NE of Wilton Center.
EF#
EF2, 2.16 miles, 400 yards, 0 casualties, 50k damage. NE of Wilton Center.
EF2
EF2
EF#
EF2
Event
Tornado outbreak sequence of June 3–11, 2008
County
Will
Date
June 7, 2008
Path length
3.66 mi (5.89 km)
Max width
150 yd (140 m)
EF2, 3.66 miles, 150 yards, 0 casualties, 500k damage. Monee?
EF2, 3.66 miles, 150 yards, 0 casualties, 500k damage. Monee?
EF#
EF2, 3.66 miles, 150 yards, 0 casualties, 500k damage. Monee?
EF2
EF2
EF#
EF2
Event
Tornado outbreak sequence of June 3–11, 2008
County
Will
Date
June 7, 2008
Path length
2.42 mi (3.89 km)
Max width
150 yd (140 m)
EF2, 2.42 miles, 150 yards, 6 injuries, 5.5m damage.
EF2, 2.42 miles, 150 yards, 6 injuries, 5.5m damage.
EF#
EF2, 2.42 miles, 150 yards, 6 injuries, 5.5m damage.
EF2
EF2
EF#
EF2
Event
—
County
Lake, Indiana
Date
August 4, 2008
Path length
2.74 mi (4.41 km)
Max width
30 yd (27 m)
EF2, 2.74 miles, 30 yards, 0 casualties, 1m damage. Damage to a mall in Griffith.
EF2, 2.74 miles, 30 yards, 0 casualties, 1m damage. Damage to a mall in Griffith.
EF#
EF2, 2.74 miles, 30 yards, 0 casualties, 1m damage. Damage to a mall in Griffith.
EF2
EF2
EF#
EF2
Event
October 2010 North American storm complex
County
Will
Date
October 26, 2010
Path length
2.32 mi (3.73 km)
Max width
200 yd (180 m)
EF2, 2.32 miles, 200 yards, 2 injuries, 500k damage.
EF2, 2.32 miles, 200 yards, 2 injuries, 500k damage.
EF#
EF2, 2.32 miles, 200 yards, 2 injuries, 500k damage.
EF2
EF2
EF#
EF2
Event
Tornado outbreak of November 17, 2013
County
Will
Date
November 17, 2013
Path length
7.6 mi (12.2 km)
Max width
200 yd (0.18 km)
EF2, 7.6 miles, 200 yards, 0 casualties, 2m damage. Continuation from Grundy County.
EF2, 7.6 miles, 200 yards, 0 casualties, 2m damage. Continuation from Grundy County.
EF#
EF2, 7.6 miles, 200 yards, 0 casualties, 2m damage. Continuation from Grundy County.
EF2
EF2
EF#
EF2
Event
Tornado outbreak of November 17, 2013
County
Will
Date
November 17, 2013
Path length
5.21 mi (8.38 km)
Max width
200 yd (180 m)
EF2, 5.21 miles, 200 yards, 0 casualties, 750k damage.
EF2, 5.21 miles, 200 yards, 0 casualties, 750k damage.
EF#
EF2, 5.21 miles, 200 yards, 0 casualties, 750k damage.
F2
F2
EF#
F2
Event
—
County
Lake, Indiana
Date
June 30, 2014
Path length
3.2 mi (5.1 km)
Max width
2.95 yd (2.70 m)
EF2, 3.2 miles, 295 yards, 0 casualties, 250k damage. Damage to agricultural infrastructure.
EF2, 3.2 miles, 295 yards, 0 casualties, 250k damage. Damage to agricultural infrastructure.
EF#
EF2, 3.2 miles, 295 yards, 0 casualties, 250k damage. Damage to agricultural infrastructure.
EF2
EF2
EF#
EF2
Event
—
County
Will
Date
June 22, 2015
Path length
8.56 mi (13.78 km)
Max width
1,320 yd (1,210 m)
EF2, 8.56 miles, 1320 yards, 0 casualties, 250k damage. Continues from Grundy. Damage on the property of Braidwood Nuclear Generating Station.
EF2, 8.56 miles, 1320 yards, 0 casualties, 250k damage. Continues from Grundy. Damage on the property of Braidwood Nuclear Generating Station.
EF#
EF2, 8.56 miles, 1320 yards, 0 casualties, 250k damage. Continues from Grundy. Damage on the property of Braidwood Nuclear Generating Station.
EF0
EF0
EF#
EF0
Event
—
County
Cook
Date
August 9, 2016
Path length
0.01 mi (0.016 km)
Max width
10 yd (9.1 m)
Chicago neighborhoods impacted
Midway
A brief landspout occurred on the runway at Midway International Airport.
A brief landspout occurred on the runway at Midway International Airport.
EF#
A brief landspout occurred on the runway at Midway International Airport.
EF0
EF0
EF#
EF0
Event
—
County
Cook
Date
September 3, 2018
Path length
1.71 mi (2.75 km)
Max width
75 yd (69 m)
Chicago neighborhoods impacted
Western Chicago, Garfield Park
A tornado touched down in western Chicago, causing primarily tree damage starting west of Cicero Avenue, with the damage path crossing I-290 at Pulaski Road before lifting near Garfield Park between 5th Avenue and Jackson Boulevard. A tree fell into an apartment and multiple large tree limbs fell onto cars throughout its path.
A tornado touched down in western Chicago, causing primarily tree damage starting west of Cicero Avenue, with the damage path crossing I-290 at Pulaski Road before lifting near Garfield Park between 5th Avenue and Jackson Boulevard. A tree fell into an apartment and multiple large tree limbs fell onto cars throughout its path.
EF#
A tornado touched down in western Chicago, causing primarily tree damage starting west of Cicero Avenue, with the damage path crossing I-290 at Pulaski Road before lifting near Garfield Park between 5th Avenue and Jackson Boulevard. A tree fell into an apartment and multiple large tree limbs fell onto cars throughout its path.
EF3
EF3
EF#
EF3
Event
2021 Naperville–Woodridge tornado
County
DuPage
Date
June 20, 2021
Path length
14.8 mi (23.8 km)
Max width
600 yd (550 m)
EF3, 14.8 miles, 600 yards, 11 injuries, unspecified damage.
EF3, 14.8 miles, 600 yards, 11 injuries, unspecified damage.
EF#
EF3, 14.8 miles, 600 yards, 11 injuries, unspecified damage.
EF0
EF0
EF#
EF0
Event
—
County
Cook
Date
July 12, 2023
Path length
3.42 mi (5.50 km)
Max width
300 yd (270 m)
Chicago neighborhoods impacted
O'Hare
Damaged warehouses at O'Hare, and caused damage to the parking lot of Allstate Arena.
Damaged warehouses at O'Hare, and caused damage to the parking lot of Allstate Arena.
EF#
Damaged warehouses at O'Hare, and caused damage to the parking lot of Allstate Arena.
EF0
EF0
EF#
EF0
Event
—
County
Cook
Date
July 14, 2024
Path length
8 mi (13 km)
Max width
300 yd (270 m)
Chicago neighborhoods impacted
West Elsdon, Gage Park, New City, Fuller Park, Kenwood, Chicago
Caused damage primarily to trees and roofs, causing tree limbs to fall on roads, before the tornado crossed onto Lake Michigan as a waterspout.
Caused damage primarily to trees and roofs, causing tree limbs to fall on roads, before the tornado crossed onto Lake Michigan as a waterspout.
EF#
Caused damage primarily to trees and roofs, causing tree limbs to fall on roads, before the tornado crossed onto Lake Michigan as a waterspout.
EF0
EF0
EF#
EF0
Event
Severe weather sequence of July 13–16, 2024
County
Cook
Date
July 14, 2024
Path length
3.6 mi (5.8 km)
Max width
200 yd (180 m)
Chicago neighborhoods impacted
Woodlawn, Jackson Park
A tornado touched down on Harvard Avenue between 69th and 70th streets, crossing I-94 and I-90 and knocking over a railroad car. Throughout Woodlawn and Jackson Park, significant damage occurred to trees and minor damage occurred to roofs, with a large tree falling on two houses along University Avenue, before the tornado moved onto Lake Michigan as a waterspout close to the 63rd Street Beach.
A tornado touched down on Harvard Avenue between 69th and 70th streets, crossing I-94 and I-90 and knocking over a railroad car. Throughout Woodlawn and Jackson Park, significant damage occurred to trees and minor damage occurred to roofs, with a large tree falling on two houses along University Avenue, before the tornado moved onto Lake Michigan as a waterspout close to the 63rd Street Beach.
EF#
A tornado touched down on Harvard Avenue between 69th and 70th streets, crossing I-94 and I-90 and knocking over a railroad car. Throughout Woodlawn and Jackson Park, significant damage occurred to trees and minor damage occurred to roofs, with a large tree falling on two houses along University Avenue, before the tornado moved onto Lake Michigan as a waterspout close to the 63rd Street Beach.
EF2
EF2
EF#
EF2
Event
Severe weather sequence of July 13–16, 2024
County
Will
Date
July 15, 2024
Path length
24.9 mi (40.1 km)
Max width
325 m (0.325 km)
EF2, 24.9 miles, 325 yards, 2 injuries, unspecified damage. Channahon to Matteson. Continues into Cook County.
EF2, 24.9 miles, 325 yards, 2 injuries, unspecified damage. Channahon to Matteson. Continues into Cook County.
EF#
EF2, 24.9 miles, 325 yards, 2 injuries, unspecified damage. Channahon to Matteson. Continues into Cook County.
EF0
EF0
EF#
EF0
Event
—
County
Cook
Date
July 15, 2024
Path length
2.8 mi (4.5 km)
Max width
250 yd (230 m)
Chicago neighborhoods impacted
O'Hare
Damaged loose objects, windows, siding, and doors at O'Hare's terminals.
Damaged loose objects, windows, siding, and doors at O'Hare's terminals.
EF#
Damaged loose objects, windows, siding, and doors at O'Hare's terminals.
EF1
EF1
EF#
EF1
Event
Severe weather sequence of July 13–16, 2024
County
Cook
Date
July 15, 2024
Path length
3.2 mi (5.1 km)
Max width
150 yd (140 m)
Chicago neighborhoods impacted
Ashburn, Marquette Park
A tornado touched down in Marquette Park, snapping the bases of multiple willow trees and causing widespread damage to other trees throughout the park. Trees downed near the intersection of 66th and Artesian street caused the blockage of multiple residential streets, and a light pole broke. More tree damage occurred in William Ogden Park, including damage to the limbs of healthy trees, before the tornado lifted near May and 64th streets.
A tornado touched down in Marquette Park, snapping the bases of multiple willow trees and causing widespread damage to other trees throughout the park. Trees downed near the intersection of 66th and Artesian street caused the blockage of multiple residential streets, and a light pole broke. More tree damage occurred in William Ogden Park, including damage to the limbs of healthy trees, before the tornado lifted near May and 64th streets.
EF#
A tornado touched down in Marquette Park, snapping the bases of multiple willow trees and causing widespread damage to other trees throughout the park. Trees downed near the intersection of 66th and Artesian street caused the blockage of multiple residential streets, and a light pole broke. More tree damage occurred in William Ogden Park, including damage to the limbs of healthy trees, before the tornado lifted near May and 64th streets.
EF1
EF1
EF#
EF1
Event
Severe weather sequence of July 13–16, 2024
County
Cook
Date
July 15, 2024
Path length
3.1 mi (5.0 km)
Max width
400 yd (370 m)
Chicago neighborhoods impacted
Garfield Park
A weak tornado formed south of I-290 and Garfield Park, causing damage to trees and roof damage to a house on Flournoy Street. More intense tree damage occurred, including the uprooting of healthy trees, near Rush University Medical Center and Stroger hospital, before the tornado struck I-290 and caused more damage in Skinner Park, with large and healthy trees uprooted and two buildings including the Chicago Police Academy building being damaged. The tornado continued producing tree damage as it crossed I-90/94 and lifted before reaching the Chicago River.
A weak tornado formed south of I-290 and Garfield Park, causing damage to trees and roof damage to a house on Flournoy Street. More intense tree damage occurred, including the uprooting of healthy trees, near Rush University Medical Center and Stroger hospital, before the tornado struck I-290 and caused more damage in Skinner Park, with large and healthy trees uprooted and two buildings including the Chicago Police Academy building being damaged. The tornado continued producing tree damage as it crossed I-90/94 and lifted before reaching the Chicago River.
EF#
A weak tornado formed south of I-290 and Garfield Park, causing damage to trees and roof damage to a house on Flournoy Street. More intense tree damage occurred, including the uprooting of healthy trees, near Rush University Medical Center and Stroger hospital, before the tornado struck I-290 and caused more damage in Skinner Park, with large and healthy trees uprooted and two buildings including the Chicago Police Academy building being damaged. The tornado continued producing tree damage as it crossed I-90/94 and lifted before reaching the Chicago River.
EF0
EF0
EF#
EF0
Event
Severe weather sequence of July 13–16, 2024
County
Cook
Date
July 15, 2024
Path length
1.4 mi (2.3 km)
Max width
150 yd (140 m)
Chicago neighborhoods impacted
Ukrainian Village
A tornado touched down near the intersection of Grand Avenue and Sacramento Boulevard, causing damage to trees, utility poles, and windows, with occasional damage to roofs and siding as well. A social media photo showed that a large tree fell on a car on Superior Street between Western and Rockwell. The tornado lifted near the intersection of Huron Street and Damen Avenue.
A tornado touched down near the intersection of Grand Avenue and Sacramento Boulevard, causing damage to trees, utility poles, and windows, with occasional damage to roofs and siding as well. A social media photo showed that a large tree fell on a car on Superior Street between Western and Rockwell. The tornado lifted near the intersection of Huron Street and Damen Avenue.
EF#
A tornado touched down near the intersection of Grand Avenue and Sacramento Boulevard, causing damage to trees, utility poles, and windows, with occasional damage to roofs and siding as well. A social media photo showed that a large tree fell on a car on Superior Street between Western and Rockwell. The tornado lifted near the intersection of Huron Street and Damen Avenue.
EF#
Event
County
Date
Path length
Max width
Chicago neighborhoods impacted
—
—
Cook
May 22, 1855
—
—
Struck modern-day Des Plaines; the first tornado on record in Illinois. 4 were killed and 8 were injured.
—
—
Kane, Cook, Lake
June 3, 1860
15 mi (24 km)
—
Damage stretched from west of Elgin to Dundee to Lake Zurich, and 4 were injured.
F4
—
Cook
May 23, 1878
—
—
Killed 2 and injured 8 on its path, which started northeast of Elgin to near Barrington.
F2
—
McHenry
May 18, 1883
—
—
3 were killed in McHenry and neighboring Boone County by this tornado that also crossed into Wisconsin.
F2
—
Will
May 18, 1883
—
—
Injured 2 near Peotone.
F2
—
McHenry
June 3, 1883
—
—
Injured 1 southeast of Harvard.
F2
—
Will
September 18, 1886
—
—
Travelled up the Des Plaines river, striking Joliet, causing 20 injuries.
F2
—
Will
June 10, 1890
—
—
An F2 tornado destroyed two barns and killed livestock south of Channahon.:46
F2
—
Cook
May 25, 1896
—
—
Edison Park, Norwood Park
This tornado formed at the Des Plaines River at the boundary between Leyden and Maine townships, traveling east. The tornado tracked through Jefferson Township, Niles, and Park Ridge, before moving into Chicago at Edison Park. The worst damage occurred at Canfield-on-the-Hill in Edison Park. The tornado also moved through Norwood Park. In all, the tornado caused an estimated $100,000 (1896 USD, $3,780,000 adjusted) of damage throughout its track, which was mostly along the northern boundary of Chicago.:70
F2
Great Blue Norther of November 11, 1911
DuPage
November 11, 1911
4 mi (6.4 km)
—
Moved through wooded areas 3 miles north of Aurora, terminating near Naperville, damaging two homes.:124
F3
Great Blue Norther of November 11, 1911
Lake (Indiana)
November 11, 1911
30 mi (48 km)
150 yd (140 m)
Spawned near Leroy, passing west of Valparaiso.:124
—
—
Cook
April 6, 1912
—
—
Caused 18 injuries in Wilmette and Niles Center, now Skokie.
F4
—
Will, Lake (Indiana)
April 21, 1917
33 mi (53 km)
—
A tornado travelled from Manhattan to north of Crown Point, killing 3 and injuring 60.
F4
—
Lake (Indiana)
April 21, 1917
20 mi (32 km)
—
Killed 4 and injured 60, starting from south of Crown Point, near where the previous F4 tornado dissipated.
F4
1920 Palm Sunday tornado outbreak
Will, DuPage, Cook
March 28, 1920
53 mi (85 km)
100 yd (91 m)
Dunning
A family of tornadoes peaking at F4 intensity moved through Channahon, Troy, and Lockport townships, before reaching peak intensity past the DuPage county border and striking Bellwood, Maywood, Melrose Park, Dunning, and Wilmette. 20 were killed and a further 300 injured throughout the tornado family's path.:161
F3
1920 Palm Sunday tornado outbreak
Lake (Indiana)
March 28, 1920
7 mi (11 km)
100 yd (91 m)
After spawning near Leroy, this tornado moved northeast, damaging seven homes.:162
F2
—
DuPage
September 11, 1925
7 mi (11 km)
300 yd (270 m)
Moved northeast towards Wheaton. 25 homes were damaged, as was agricultural infrastructure. One injury was recorded.:194
F2
—
Cook
May 18, 1926
3 mi (4.8 km)
100 yd (91 m)
An F2 tornado moved through Harvey, causing damage to residential areas and factories, skipping over Harvey's downtown, killing livestock, and injuring 6.:196
EF3/F4
1928 Rockford tornado
McHenry
September 14, 1928
26 mi (42 km)
~166 yd (152 m)
A strong tornado moved through the Rockford area in Winnebago County before crossing into Boone County and later McHenry County. 14 people were killed and at least 100 others were injured.:215 In 2023, the National Weather Service rated the tornado as an EF3, while Fujita rated the tornado as an F4 in 1990.
F2
—
Cook
May 5, 1930
—
30 yd (27 m)
Moved four blocks through Maywood.:227
F2
—
Kane
April 30, 1933
2.5 mi (4.0 km)
100 yd (91 m)
Damaged barns and unroofed the high school in Plato Center, causing 3 injuries.:243
F?
—
Cook
May 1, 1933
—
—
Not specified
Fujita records a tornado struck the city on May 1, 1933, causing an estimated $1,300,000 (1961 USD; $13,679,000 adjusted) of damage.
F3
—
Will
April 7, 1948
—
—
Crossing from Grundy county, this tornado struck Braidwood, causing 1 injury across its entire path.
F4
—
Lake (Indiana)
April 7, 1948
40 mi (64 km)
—
Over 40 miles from west of Manteno to south of Hebron, this tornado killed 4 and injured 20 across Kankakee (Illinois), Lake, Porter, and Jasper (Indiana) Counties.
F2
—
Cook, Lake (Indiana)
April 7, 1948
30 mi (48 km)
—

References

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  30. Tornado at LAKE at 1954-06-01 02:00 CST sourced from the Storm Events Database, a service of the National Centers for En
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  31. "Storm Events Database (LOT survey Cook County, 1955-05-26 16:00 CST)"
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  32. Tornado at KANE at 1956-08-23 14:00 CST sourced from the Storm Events Database, a service of the National Centers for En
    https://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=10007523
  33. Tornado at LAKE at 1957-07-12 20:00 CST sourced from the Storm Events Database, a service of the National Centers for En
    https://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=10003821
  34. Tornado at KANE at 1958-08-06 17:10 CST sourced from the Storm Events Database, a service of the National Centers for En
    https://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=10010898
  35. "Storm Events Database (LOT survey Cook County, 1958-08-30 22:55 CST)"
    https://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=10010909
  36. Tornado at LAKE at 1958-10-09 00:55 CST sourced from the Storm Events Database, a service of the National Centers for En
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  37. Tornado at MCHENRY at 1958-10-09 00:26 CST sourced from the Storm Events Database, a service of the National Centers for
    https://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=10010911
  38. Tornado at DU PAGE at 1959-09-26 17:45 CST sourced from the Storm Events Database, a service of the National Centers for
    https://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=10009827
  39. Tornado at MCHENRY at 1959-10-08 15:30 CST sourced from the Storm Events Database, a service of the National Centers for
    https://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=10009837
  40. Tornado at LAKE at 1961-04-23 16:37 CST sourced from the Storm Events Database, a service of the National Centers for En
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  41. Tornado at WILL at 1961-04-23 15:45 CST sourced from the Storm Events Database, a service of the National Centers for En
    https://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=10007628
  42. Tornado at Lake and Porter Counties at 1962-07-20 15:00 CST sourced from the Storm Events Database, a service of the Nat
    https://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=10002744
  43. Tornado at MCHENRY at 1963-04-19 17:45 CST sourced from the Storm Events Database, a service of the National Centers for
    https://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=10008154
  44. Tornado at LAKE at 1965-04-11 15:35 CST sourced from the Storm Events Database, a service of the National Centers for En
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  45. Tornado at LAKE at 1965-04-11 15:50 CST sourced from the Storm Events Database, a service of the National Centers for En
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  46. Tornado at DU PAGE at 1965-05-26 07:45 CST sourced from the Storm Events Database, a service of the National Centers for
    https://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=10011082
  47. Tornado at Grundy, Cook, and Will counties at 1965-11-12 15:00 CST sourced from the Storm Events Database, a service of
    https://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=10007741
  48. Tornado at Munster at 1965-11-12 16:53 CST sourced from the Storm Events Database, a service of the National Centers for
    https://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=10006130
  49. Tornado at DU PAGE at 1965-11-12 14:48 CST sourced from the Storm Events Database, a service of the National Centers for
    https://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=10007740
  50. Tornado at DU PAGE at 1966-04-19 22:27 CST sourced from the Storm Events Database, a service of the National Centers for
    https://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=10008830
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  53. Tornado at KANE at 1967-04-21 17:10 CST sourced from the Storm Events Database, a service of the National Centers for En
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  54. Tornado at MCHENRY at 1967-04-21 16:05 CST sourced from the Storm Events Database, a service of the National Centers for
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  55. "Storm Events Database (LOT survey Cook County, 1970-04-30 14:25 CST)"
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  56. Tornado at DU PAGE at 1971-08-24 19:15 CST sourced from the Storm Events Database, a service of the National Centers for
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  57. Tornado at WILL at 1972-04-06 20:10 CST sourced from the Storm Events Database, a service of the National Centers for En
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  58. Tornado at WILL at 1972-04-06 20:30 CST sourced from the Storm Events Database, a service of the National Centers for En
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  59. Tornado at DU PAGE at 1972-07-17 19:10 CST sourced from the Storm Events Database, a service of the National Centers for
    https://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=10006784
  60. Tornado at Great Lakes Naval Station, North Chicago, Waukegan at 1972-09-28 17:55 CST sourced from the Storm Events Data
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  61. Tornado at Lowell at 1974-06-20 19:10 CST sourced from the Storm Events Database, a service of the National Centers for
    https://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=10016518
  62. Tornado at DU PAGE at 1976-03-12 12:57 CST sourced from the Storm Events Database, a service of the National Centers for
    https://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=10006919
  63. Tornado at DU PAGE at 1976-03-12 13:20 CST sourced from the Storm Events Database, a service of the National Centers for
    https://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=10006924
  64. Tornado at Deep River at 1976-03-12 14:00 CST sourced from the Storm Events Database, a service of the National Centers
    https://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=10018337
  65. Tornado at LAKE at 1976-04-20 19:45 CST sourced from the Storm Events Database, a service of the National Centers for En
    https://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=10003166
  66. Tornado at DU PAGE at 1976-06-13 16:48 CST sourced from the Storm Events Database, a service of the National Centers for
    https://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=10003181
  67. Tornado at Lake at 1977-06-30 14:53 CST sourced from the Storm Events Database, a service of the National Centers for En
    https://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=10017219
  68. Tornado at Southern Cook County at 1978-04-18 16:55 CST sourced from the Storm Events Database, a service of the Nationa
    https://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=10003253
  69. Tornado at MCHENRY at 1978-08-15 19:45 CST sourced from the Storm Events Database, a service of the National Centers for
    https://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=10004677
  70. Tornado at Hampshire at 1980-07-16 02:55 CST sourced from the Storm Events Database, a service of the National Centers f
    https://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=10003079
  71. Tornado at Plainfield at 1984-04-27 17:50 CST sourced from the Storm Events Database, a service of the National Centers
    https://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=10004418
  72. Tornado at WILL at 1988-04-05 20:14 CST sourced from the Storm Events Database, a service of the National Centers for En
    https://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=10006043
  73. Tornado at Oswego, Plainfield, Joliet at 1990-08-28 14:37 CST sourced from the Storm Events Database, a service of the N
    https://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=10003586
  74. Tornado at Romeoville, Lemont at 1991-03-27 15:55 CST sourced from the Storm Events Database, a service of the National
    https://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=10004737
  75. Tornado at New Lennox at 1993-08-15 16:35 CST sourced from the Storm Events Database, a service of the National Centers
    https://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=10322687
  76. Tornado at LAKE at 1996-04-19 22:32 CST sourced from the Storm Events Database, a service of the National Centers for En
    https://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=5541169
  77. Tornado at LAKE at 1997-05-18 18:18 CST sourced from the Storm Events Database, a service of the National Centers for En
    https://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=5597968
  78. "Storm Events Database (LOT survey Chicago, 2006-09-22 17:02 CST)"
    https://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=5534332
  79. Tornado at 2WNW CHEMUNG at 2008-01-07 15:39 CST-6 sourced from the Storm Events Database, a service of the National Cent
    https://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=73941
  80. Tornado at 3SE GODLEY at 2008-06-07 16:19 CST-6 sourced from the Storm Events Database, a service of the National Center
    https://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=105506
  81. Tornado at 1SSE WILTON at 2008-06-07 16:51 CST-6 sourced from the Storm Events Database, a service of the National Cente
    https://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=105514
  82. Tornado at 3NE ANDRES at 2008-06-07 16:55 CST-6 sourced from the Storm Events Database, a service of the National Center
    https://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=105531
  83. Tornado at 3NW MONEE at 2008-06-07 17:13 CST-6 sourced from the Storm Events Database, a service of the National Centers
    https://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=105544
  84. Tornado at 2N GRIFFITH at 2008-08-04 19:27 CST-6 sourced from the Storm Events Database, a service of the National Cente
    https://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=131707
  85. Tornado at 3SE PEOTONE at 2010-10-26 06:40 CST-6 sourced from the Storm Events Database, a service of the National Cente
    https://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=265258
  86. Tornado at 2NW BRAIDWOOD at 2013-11-17 12:26 CST-6 sourced from the Storm Events Database, a service of the National Cen
    https://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=484030
  87. Tornado at 2N WILTON at 2013-11-17 12:42 CST-6 sourced from the Storm Events Database, a service of the National Centers
    https://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=484032
  88. Tornado at 2E LOWELL at 2014-06-30 21:44 CST-6 sourced from the Storm Events Database, a service of the National Centers
    https://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=862233
  89. Tornado at 1WSW BRAIDWOOD at 2015-06-22 20:58 CST-6 sourced from the Storm Events Database, a service of the National Ce
    https://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=590649
  90. Tornado at 0NE CICERO at 2016-08-09 14:48 CST-6 sourced from the Storm Events Database, a service of the National Center
    https://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=659015
  91. "Storm Events Database (LOT survey Berwyn, 2018-09-03 13:14 CST-6)"
    https://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=785033
  92. Tornado at Naperville at 2021-06-20 22:02 CST-6 sourced from the Storm Events Database, a service of the National Center
    https://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=960280
  93. Tornado at 2N (ORD) CHICAGO O'HARE AIRPORT at 2023-07-12 18:02 CST-6 sourced from the Storm Events Database, a service o
    https://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=1135984
  94. Tornado at 1NNE (MDW) CHICAGO MIDWAY AIRPORT at 2024-07-14 21:33 CST-6 sourced from the Storm Events Database, a service
    https://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=1190858
  95. "Storm Events Database (LOT survey Englewood, 2024-07-14 21:40 CST-6)"
    https://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=1190866
  96. Tornado at 2SSW CHANNAHON at 2024-07-15 20:15 CST-6 sourced from the Storm Events Database, a service of the National Ce
    https://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=1194176
  97. Tornado at 1N Bensenville at https://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=1194265 sourced from the Storm Ev
    https://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=1194265
  98. "Storm Events Database (LOT survey Ashburn, 2024-07-15 20:47 CST-6)"
    https://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=1194326
  99. "Storm Events Database (LOT survey Garfield Park, 2024-07-15 20:47 CST-6)"
    https://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=1194315
  100. "Storm Events Database (LOT survey Ukrainian Village, 2024-07-15 20:50 CST-6)"
    https://www.ncdc.noaa.gov/stormevents/eventdetails.jsp?id=1194339
  101. Except where official ratings are assigned, F-scale ratings in this section will be considered equivalent to EF-scale ra
  102. Includes officially unrated tornadoes, and those at O'Hare International Airport and Midway International Airport.
  103. Grazulis lists this path length as a tornado family instead of a single tornado.
  104. Officially unrated.
  105. Officially unrated.
  106. Officially unrated.
  107. This is the path length of the entire tornado family, and likely not the result of a single tornado.
  108. This tornado is not recorded as a significant (F2+) tornado by Grazulis.
  109. This tornado is not recorded as a significant (F2+) tornado by Grazulis.
  110. This tornado is not recorded as a significant (F2+) tornado by Grazulis.
  111. This tornado is not recorded as a significant (F2+) tornado by Grazulis.
  112. This is the path length for the entire tornado family. It is not the path length of any individual tornado.
  113. This tornado is not recorded as a significant (F2+) tornado by Grazulis.
  114. This tornado is not recorded as a significant (F2+) tornado by Grazulis.
  115. This tornado is not recorded as a significant (F2+) tornado by Grazulis.
  116. This tornado is not recorded as a significant (F2+) tornado by Grazulis.
  117. This tornado is not recorded as a significant (F2+) tornado by Grazulis.
  118. This tornado is not recorded as a significant (F2+) tornado by Grazulis.
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