Oklahoma, 1999Hail and Damaging Winds in Oklahoma, April 21 to 22, 1999
April 21 to 22, 1999 · NWS TSA · 13 events in 9 counties and zones
Summary of events for April 21 1999:A series of severe thunderstorms developed along a dryline over central Oklahoma on the evening of April 21. These thunderstorms then moved eastward across northeast Oklahoma through the late evening before exiting into southwest Missouri around 200 AM CDT.
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
- Deaths
- 0
- Injuries
- 0
- Property damage
- $16,000
- Crop damage
- None recorded
- Events
- 13
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.
Summary of events for April 21 1999:A series of severe thunderstorms developed along a dryline over central Oklahoma on the evening of April 21. These thunderstorms then moved eastward across northeast Oklahoma through the late evening before exiting into southwest Missouri around 200 AM CDT. These storms produced scattered wind damage and hail as large as golfballs.
Hail, Pawnee
- When
- April 21, 9:45 PM CST
- Where
- Pawnee County, Pawnee
- Measured
- 0.88 in hail
- Reported by
- LAW ENFORCEMENT
- Coordinates
- 36.330, -96.800
There were two reports of nickel-sized hail near Pawnee...one report from in Pawnee and the other report from 5 miles north of Pawnee. An unknown source indicated golfball-sized hail just north of Pawnee. Additionally, 50 mph winds accompanied this storm.
Hail, Pawnee
- When
- April 21, 10:58 PM CST
- Where
- Pawnee County, Hallett
- Measured
- 1.75 in hail
- Reported by
- AMATEUR RADIO
- Coordinates
- 36.230, -96.570
Thunderstorm Wind, Pawnee
- When
- April 21, 11:03 PM CST
- Where
- Pawnee County, Hallett
- Measured
- 66 kt (76 mph)
- Property damage
- $13,000
- Reported by
- LAW ENFORCEMENT
- Coordinates
- 36.230, -96.570
Winds estimated near 75 mph blew down trees, power lines and highway signs in and near Hallett. A roof was blown off of a home east of Hallett.
Thunderstorm Wind, Creek
- When
- April 21, 11:07 PM CST
- Where
- Creek County, 1 mi W of Mannford
- Measured
- 52 kt (60 mph)
- Reported by
- AMATEUR RADIO
- Coordinates
- 36.250, -96.430
Thunderstorm Wind, Pawnee
- When
- April 21, 11:15 PM CST
- Where
- Pawnee County, 10 mi E of Hallett
- Property damage
- $1,000
- Reported by
- AMATEUR RADIO
- Coordinates
- 36.230, -96.380
Highway signs were blown down near the intersection of OK Hwy 48 and US Hwy 412, which is near Westport.
Thunderstorm Wind, Tulsa
- When
- April 21, 11:26 PM CST
- Where
- Tulsa County, Tulsa
- Measured
- 52 kt (60 mph)
- Reported by
- AMATEUR RADIO
- Coordinates
- 36.150, -95.950
Thunderstorm Wind, Osage
- When
- April 21, 11:30 PM CST
- Where
- Osage County, 3 mi NW of Tulsa
- Measured
- 57 kt (66 mph)
- Reported by
- NWS EMPLOYEE(OFF DUTY)
- Coordinates
- 36.180, -95.980
Location: Gilcrease Museum
Hail, Rogers
- When
- April 21, 11:58 PM CST
- Where
- Rogers County, Claremore
- Measured
- 0.88 in hail
- Reported by
- AMATEUR RADIO
- Coordinates
- 36.320, -95.600
Thunderstorm Wind, Mayes
- When
- April 22, 12:10 AM CST
- Where
- Mayes County, Adair
- Property damage
- $2,000
- Reported by
- GENERAL PUBLIC
- Coordinates
- 36.430, -95.270
Shingles were blown off of several roofs in Adair.
Thunderstorm Wind, Craig
- When
- April 22, 12:10 AM CST
- Where
- Craig County, 7 mi SW of Vinita
- Measured
- 52 kt (60 mph)
- Reported by
- GENERAL PUBLIC
- Coordinates
- 36.580, -95.230
Thunderstorm Wind, Mayes
- When
- April 22, 12:15 AM CST
- Where
- Mayes County, Pryor
- Property damage
- $100
- Reported by
- EMERGENCY MANAGER
- Coordinates
- 36.300, -95.320
Several 2-inch tree limbs were blown down in Pryor.
Thunderstorm Wind, Delaware
- When
- April 22, 12:30 AM CST
- Where
- Delaware County, Bernice
- Measured
- 52 kt (60 mph)
- Reported by
- AMATEUR RADIO
- Coordinates
- 36.620, -94.920
Hail, Ottawa
- When
- April 22, 12:55 AM CST
- Where
- Ottawa County, 9 mi SE of Wyandotte
- Measured
- 0.75 in hail
- Reported by
- AMATEUR RADIO
- Coordinates
- 36.700, -94.620
- Hail
- Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.
- 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.
- Tornadoes and Hail in Oklahoma, April 21 to 22, 19991 injured · $2.6 million · F2 · 62 events
- Tornadoes and Hail in Nebraska, April 21, 1999$122,000 · F2 · 9 events
- Hail and Damaging Winds in Kansas, April 21 to 22, 1999$595,000 · 2.75 in hail · 40 events
- Dust Storm in California, April 21 to 22, 1999$210,000 · 2 events
- Lightning Strike in Missouri, April 21, 1999$35,000 · 1 event
- Flash Flood and Hail in Pennsylvania, April 21 to 23, 1999$7,000 · 2 in hail · 9 events
- Flooding and Hail in Kansas, April 21 to 22, 19991.75 in hail · 8 events
- Heavy Snow in Colorado, April 21 to 23, 19996 events
- Hail and Damaging Wind in Illinois, April 21, 19991.75 in hail · 5 events
- Winter Storm in Colorado, April 21 to 22, 19994 events
- Hail in Ohio, April 21 to 23, 19990.75 in hail · 3 events
- Damaging Winds in Illinois, April 21 to 22, 199950 kt wind · 3 events
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: 5690637, 5690638, 5690639, 5690641, 5690640, 5690731, 5690730, 5690732, 5690734, 5690735, 5690733, 5690736, 5690737.