Tornadoes and Hail in Oklahoma, April 27, 1966

Name: Tornadoes and Hail in Oklahoma, April 27, 1966
Start: 1966-04-27T17:35
End: 1966-04-27T20:15
Location: Oklahoma

April 27, 1966 · 10 events in 8 counties and zones

6 hail, 4 tornado, 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: 3
Property damage: $775,000
Crop damage: None recorded
Events: 10

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

6 hail, 4 tornado. Local standard time, as filed.

Hail, Okmulgee

When: April 27, 5:35 PM CST
Where: Okmulgee County
Measured: 1.75 in hail
Coordinates: 35.580, -96.000

Tornado, Hughes

When: April 27, 6:15 PM CST
Where: Hughes County
Rating: F2
Path length: 3.6 mi
Path width: 150 yd
Injuries: 1 direct, 0 indirect
Property damage: $25,000
Coordinates: 34.970, -96.250

Hail, Hughes

When: April 27, 6:15 PM CST
Where: Hughes County
Measured: 1.5 in hail
Coordinates: 35.000, -96.280

Hail, Muskogee

When: April 27, 6:30 PM CST
Where: Muskogee County
Measured: 1.75 in hail
Coordinates: 35.780, -95.280

Tornado, Johnston

When: April 27, 7:00 PM CST
Where: Johnston County
Rating: F4
Path length: 7.9 mi
Path width: 300 yd
Injuries: 2 direct, 0 indirect
Property damage: $250,000
Coordinates: 34.320, -96.530

Tornado, Pittsburg

When: April 27, 7:05 PM CST
Where: Pittsburg County
Rating: F3
Path length: 8 mi
Path width: 400 yd
Property damage: $250,000
Coordinates: 34.880, -96.000

Tornado, Atoka

When: April 27, 7:15 PM CST
Where: Atoka County
Rating: F4
Path length: 2.3 mi
Path width: 300 yd
Property damage: $250,000
Coordinates: 34.280, -96.400

Hail, Atoka

When: April 27, 7:30 PM CST
Where: Atoka County
Measured: 1.5 in hail
Coordinates: 34.500, -96.180

Hail, Bryan

When: April 27, 7:30 PM CST
Where: Bryan County
Measured: 1.5 in hail
Coordinates: 34.000, -96.400

Hail, Marshall

When: April 27, 8:15 PM CST
Where: Marshall County
Measured: 1.25 in hail
Coordinates: 34.000, -96.680

What these are

Hail: Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.
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.

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

The same day elsewhere

Every storm in Oklahoma in 1966 Every state in 1966 This day in weather history The tornado archive for Oklahoma, 1966

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: 10095461, 10095462, 10095463, 10095464, 10095465, 10095466, 10095467, 10095468, 10095469, 10095470.