Tornado and Hail in Oklahoma, April 20, 1961

Name: Tornado and Hail in Oklahoma, April 20, 1961
Start: 1961-04-20T23:35
End: 1961-04-20T23:35
Location: Oklahoma

April 20, 1961 · 2 events in 1 county or zone

1 tornado, 1 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: $250
Crop damage: None recorded
Events: 2

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

1 tornado, 1 hail. Local standard time, as filed.

Tornado, Nowata

When: April 20, 11:35 PM CST
Where: Nowata County
Rating: F0
Path width: 100 yd
Property damage: $250
Coordinates: 36.850, -95.630

Hail, Nowata

When: April 20, 11:35 PM CST
Where: Nowata County
Measured: 1.75 in hail
Coordinates: 36.780, -95.580

What these are

Tornado: A violently rotating column of air in contact with the ground and extending from a thunderstorm, filed with its path, width and Fujita or Enhanced Fujita rating from the damage survey.
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

Every storm in Oklahoma in 1961 Every state in 1961 This day in weather history The tornado archive for Oklahoma, 1961

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: 10091807, 10091808.