Tornadoes and Hail in Oklahoma, April 20, 1984

Name: Tornadoes and Hail in Oklahoma, April 20, 1984
Start: 1984-04-20T07:20
End: 1984-04-20T21:40
Location: Oklahoma

April 20, 1984 · NWS AT · 52 events in 25 counties and zones

33 hail, 13 thunderstorm wind, 6 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

Open the live radar over this ground

The toll

Deaths: 1
Injuries: 7
Property damage: $250,000
Crop damage: None recorded
Events: 52

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

33 hail, 13 thunderstorm wind, 6 tornado. Local standard time, as filed.

Hail, Payne

When: April 20, 7:20 AM CST
Where: Payne County
Measured: 1 in hail
Coordinates: 36.230, -96.930

Hail, Woods

When: April 20, 8:00 AM CST
Where: Woods County
Measured: 1 in hail
Coordinates: 36.900, -98.780

Hail, Osage

When: April 20, 8:50 AM CST
Where: Osage County
Measured: 1.75 in hail
Coordinates: 36.730, -96.000

Tornado, Roger Mills

When: April 20, 1:55 PM CST
Where: Roger Mills County
Rating: F0
Path length: 0.1 mi
Path width: 33 yd
Property damage: $30
Coordinates: 35.630, -99.630

Hail, Roger Mills

When: April 20, 2:05 PM CST
Where: Roger Mills County
Measured: 1 in hail
Coordinates: 35.670, -99.600

Hail, Roger Mills

When: April 20, 2:28 PM CST
Where: Roger Mills County
Measured: 0.75 in hail
Coordinates: 35.620, -99.670

Thunderstorm Wind, Dewey

When: April 20, 2:30 PM CST
Where: Dewey County
Measured: 52 kt (60 mph)
Coordinates: 35.870, -99.350

Hail, Dewey

When: April 20, 2:50 PM CST
Where: Dewey County
Measured: 1.75 in hail
Coordinates: 35.970, -98.970

Thunderstorm Wind, Dewey

When: April 20, 2:50 PM CST
Where: Dewey County
Measured: 52 kt (60 mph)
Coordinates: 35.850, -98.970

Tornado, Dewey

When: April 20, 2:55 PM CST
Where: Dewey County
Rating: F0
Path length: 0.1 mi
Path width: 33 yd
Property damage: $30
Coordinates: 36.080, -99.020

Hail, Major

When: April 20, 3:20 PM CST
Where: Major County
Measured: 1.75 in hail
Coordinates: 36.220, -98.920

Hail, Washita

When: April 20, 3:25 PM CST
Where: Washita County
Measured: 1.75 in hail
Coordinates: 35.300, -98.980

Hail, Blaine

When: April 20, 3:30 PM CST
Where: Blaine County
Measured: 1.75 in hail
Coordinates: 36.070, -98.580

Hail, Carter

When: April 20, 3:35 PM CST
Where: Carter County
Measured: 1.75 in hail
Coordinates: 34.170, -97.420

Tornado, Blaine

When: April 20, 3:38 PM CST
Where: Blaine County
Rating: F1
Path length: 12.5 mi
Path width: 10 yd
Deaths: 1 direct, 0 indirect
Injuries: 7 direct, 0 indirect
Property damage: $250,000
Coordinates: 36.080, -98.620

Hail, Washita

When: April 20, 3:40 PM CST
Where: Washita County
Measured: 0.75 in hail
Coordinates: 35.380, -98.780

Tornado, Carter

When: April 20, 3:45 PM CST
Where: Carter County
Rating: F0
Path length: 0.1 mi
Path width: 33 yd
Property damage: $30
Coordinates: 34.180, -97.230

Hail, Grady

When: April 20, 4:10 PM CST
Where: Grady County
Measured: 1 in hail
Coordinates: 35.280, -97.800

Hail, Murray

When: April 20, 4:10 PM CST
Where: Murray County
Measured: 1.5 in hail
Coordinates: 34.370, -96.950

Hail, Garfield

When: April 20, 4:19 PM CST
Where: Garfield County
Measured: 1.75 in hail
Coordinates: 36.400, -98.020

Hail, Canadian

When: April 20, 4:20 PM CST
Where: Canadian County
Measured: 0.75 in hail
Coordinates: 35.380, -97.720

Hail, Pontotoc

When: April 20, 4:20 PM CST
Where: Pontotoc County
Measured: 1 in hail
Coordinates: 34.530, -96.630

Thunderstorm Wind, Garfield

When: April 20, 4:20 PM CST
Where: Garfield County
Measured: 65 kt (75 mph)
Coordinates: 36.280, -97.900

Tornado, Garfield

When: April 20, 4:29 PM CST
Where: Garfield County
Rating: F0
Path length: 0.1 mi
Path width: 33 yd
Property damage: $30
Coordinates: 36.330, -97.930

Hail, Carter

When: April 20, 4:29 PM CST
Where: Carter County
Measured: 1.75 in hail
Coordinates: 34.180, -97.130

Hail, Oklahoma

When: April 20, 4:30 PM CST
Where: Oklahoma County
Measured: 1.75 in hail
Coordinates: 35.480, -97.530

Thunderstorm Wind, Garfield

When: April 20, 4:31 PM CST
Where: Garfield County
Measured: 60 kt (69 mph)
Coordinates: 36.380, -97.780

Hail, Oklahoma

When: April 20, 4:36 PM CST
Where: Oklahoma County
Measured: 1 in hail
Coordinates: 35.480, -97.530

Hail, Lincoln

When: April 20, 4:44 PM CST
Where: Lincoln County
Measured: 1.5 in hail
Coordinates: 35.670, -97.030

Hail, Johnston

When: April 20, 4:45 PM CST
Where: Johnston County
Measured: 1.5 in hail
Coordinates: 34.480, -96.620

Hail, Garfield

When: April 20, 4:55 PM CST
Where: Garfield County
Measured: 1 in hail
Coordinates: 36.350, -97.700

Hail, Lincoln

When: April 20, 5:20 PM CST
Where: Lincoln County
Measured: 2.5 in hail
Coordinates: 35.700, -97.030

Hail, Coal

When: April 20, 5:28 PM CST
Where: Coal County
Measured: 1 in hail
Coordinates: 34.530, -96.220

Thunderstorm Wind, Coal

When: April 20, 5:28 PM CST
Where: Coal County
Coordinates: 34.530, -96.220

Hail, Johnston

When: April 20, 5:42 PM CST
Where: Johnston County
Measured: 1 in hail
Coordinates: 34.230, -96.670

Hail, Lincoln

When: April 20, 5:45 PM CST
Where: Lincoln County
Measured: 0.75 in hail
Coordinates: 35.700, -96.880

Hail, Carter

When: April 20, 5:45 PM CST
Where: Carter County
Measured: 1.75 in hail
Coordinates: 34.080, -97.130

Thunderstorm Wind, Atoka

When: April 20, 6:00 PM CST
Where: Atoka County
Coordinates: 34.470, -96.050

Hail, Carter

When: April 20, 6:26 PM CST
Where: Carter County
Measured: 1.75 in hail
Coordinates: 34.180, -97.130

Hail, Pittsburg

When: April 20, 6:28 PM CST
Where: Pittsburg County
Measured: 1.75 in hail
Coordinates: 34.830, -95.530

Hail, Atoka

When: April 20, 6:38 PM CST
Where: Atoka County
Measured: 1 in hail
Coordinates: 34.320, -96.170

Tornado, Atoka

When: April 20, 6:50 PM CST
Where: Atoka County
Rating: F0
Path length: 0.1 mi
Path width: 33 yd
Property damage: $30
Coordinates: 34.400, -96.130

Thunderstorm Wind, Latimer

When: April 20, 8:00 PM CST
Where: Latimer County
Coordinates: 34.950, -95.080

Thunderstorm Wind, Atoka

When: April 20, 8:03 PM CST
Where: Atoka County
Coordinates: 34.350, -96.070

Thunderstorm Wind, Pushmataha

When: April 20, 8:10 PM CST
Where: Pushmataha County
Measured: 56 kt (64 mph)
Coordinates: 34.480, -95.220

Thunderstorm Wind, Le Flore

When: April 20, 8:30 PM CST
Where: Le Flore County
Measured: 65 kt (75 mph)
Coordinates: 35.230, -94.480

Thunderstorm Wind, McCurtain

When: April 20, 8:45 PM CST
Where: McCurtain County
Measured: 52 kt (60 mph)
Coordinates: 34.030, -94.730

Hail, McCurtain

When: April 20, 9:00 PM CST
Where: McCurtain County
Measured: 1 in hail
Coordinates: 33.930, -95.120

Thunderstorm Wind, Le Flore

When: April 20, 9:00 PM CST
Where: Le Flore County
Coordinates: 35.230, -94.480

Hail, Tulsa

When: April 20, 9:25 PM CST
Where: Tulsa County
Measured: 0.75 in hail
Coordinates: 36.150, -95.950

Hail, McCurtain

When: April 20, 9:35 PM CST
Where: McCurtain County
Measured: 1.75 in hail
Coordinates: 33.820, -94.830

Thunderstorm Wind, McCurtain

When: April 20, 9:40 PM CST
Where: McCurtain County
Coordinates: 33.700, -94.650

The people who died

As the offices recorded each death: direct deaths were caused by the weather itself, indirect ones by something it set in motion.

Event	Date	Age	Sex	Where	Kind
Tornado, Blaine	1984-04-20				Direct

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.
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.

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

The same day elsewhere

Every storm in Oklahoma in 1984 Every state in 1984 This day in weather history The tornado archive for Oklahoma, 1984

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: 10108163, 10108164, 10108165, 10108166, 10108167, 10108168, 10108169, 10108170, 10108171, 10108172, 10108173, 10108174, 10109035, 10109036, 10109037, 10109038, 10109039, 10109040, 10109041, 10109042, 10109043, 10109044, 10109260, 10109261, 10109262, 10109263, 10109264, 10109265, 10109266, 10109267, 10109268, 10109269, 10109270, 10109271, 10109272, 10109273, 10109274, 10109275, 10109276, 10109277, and more.