Tornado, Kay
- When
- May 11, 2:35 PM CST
- Where
- Kay County
- Rating
- F2
- Path length
- 3.8 mi
- Path width
- 100 yd
- Injuries
- 3 direct, 0 indirect
- Property damage
- $25,000
- Coordinates
- 36.900, -97.380
Tornadoes and Hail in Oklahoma, May 11, 1978
7 hail, 4 thunderstorm wind, 3 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
The toll
- Deaths
- 0
- Injuries
- 3
- Property damage
- $50,000
- Crop damage
- None recorded
- Events
- 14
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
7 hail, 4 thunderstorm wind, 3 tornado. Local standard time, as filed.
Thunderstorm Wind, Kay
- When
- May 11, 3:10 PM CST
- Where
- Kay County
- Coordinates
- 36.780, -97.100
Thunderstorm Wind, Kay
- When
- May 11, 4:35 PM CST
- Where
- Kay County
- Measured
- 55 kt (63 mph)
- Coordinates
- 36.700, -97.080
Thunderstorm Wind, Washington
- When
- May 11, 5:35 PM CST
- Where
- Washington County
- Measured
- 60 kt (69 mph)
- Coordinates
- 36.900, -95.930
Hail, Osage
- When
- May 11, 5:54 PM CST
- Where
- Osage County
- Measured
- 2.5 in hail
- Coordinates
- 36.600, -96.430
Tornado, Osage
- When
- May 11, 6:00 PM CST
- Where
- Osage County
- Rating
- F1
- Path length
- 1 mi
- Path width
- 40 yd
- Property damage
- $25,000
- Coordinates
- 36.880, -95.920
Hail, Osage
- When
- May 11, 6:30 PM CST
- Where
- Osage County
- Measured
- 0.75 in hail
- Coordinates
- 36.570, -96.170
Tornado, Osage
- When
- May 11, 7:00 PM CST
- Where
- Osage County
- Rating
- F0
- Path length
- 0.2 mi
- Path width
- 10 yd
- Coordinates
- 36.520, -96.120
Hail, Washington
- When
- May 11, 7:10 PM CST
- Where
- Washington County
- Measured
- 1.75 in hail
- Coordinates
- 36.530, -95.920
Hail, Craig
- When
- May 11, 7:20 PM CST
- Where
- Craig County
- Measured
- 2.75 in hail
- Coordinates
- 36.620, -95.270
Hail, Craig
- When
- May 11, 7:30 PM CST
- Where
- Craig County
- Measured
- 1.75 in hail
- Coordinates
- 36.650, -95.150
Hail, Adair
- When
- May 11, 8:30 PM CST
- Where
- Adair County
- Measured
- 1.75 in hail
- Coordinates
- 36.150, -95.950
Hail, Bryan
- When
- May 11, 8:35 PM CST
- Where
- Bryan County
- Measured
- 1.75 in hail
- Coordinates
- 36.150, -96.380
Thunderstorm Wind, Wagoner
- When
- May 11, 11:05 PM CST
- Where
- Wagoner County
- Coordinates
- 35.970, -95.320
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.
- 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 Oklahoma in 1978Every state in 1978This day in weather historyThe tornado archive for Oklahoma, 1978
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: 10092508, 10092509, 10092510, 10092511, 10092512, 10092513, 10092514, 10092515, 10092516, 10092517, 10092518, 10092519, 10092520, 10092521.