Illinois, 1974

Hail and Damaging Winds in Illinois, May 21, 1974

May 21, 1974 · 4 events in 3 counties and zones

2 thunderstorm wind, 2 hail, as filed by the National Weather Service.

Where it happened

Every event with a place to put it. Tap one for its entry below.

  • Tornadoes
  • Tropical storms and surge
  • Floods
  • Wind
  • Hail
  • Winter weather
  • Heat and drought
  • Cold
  • Fire, smoke and dust
  • Marine and coastal
  • Other

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The toll

Deaths
0
Injuries
0
Property damage
None recorded
Crop damage
None recorded
Events
4

Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.

Event by event

2 thunderstorm wind, 2 hail. Local standard time, as filed.

Thunderstorm Wind, Clay

When
May 21, 11:53 AM CST
Where
Clay County
Coordinates
38.670, -88.480

Hail, Cook

When
May 21, 12:05 PM CST
Where
Cook County
Measured
0.75 in hail
Coordinates
41.750, -87.800

Hail, Whiteside

When
May 21, 4:30 PM CST
Where
Whiteside County
Measured
0.75 in hail
Coordinates
41.770, -89.950

Thunderstorm Wind, Whiteside

When
May 21, 4:30 PM CST
Where
Whiteside County
Coordinates
41.770, -89.950

What these are

Thunderstorm Wind
Winds from a thunderstorm of 50 knots (58 mph) or more, or lower winds that caused damage or casualties. Measured gusts are marked MG, estimated EG.
Hail
Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

More

Every storm in Illinois in 1974Every state in 1974This day in weather history

Sources

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 10009086, 10009087, 10009088, 10009089.