Name: Hail and Damaging Winds in Oklahoma, August 13, 1999
Start: 1999-08-13T16:15
End: 1999-08-13T17:35
Location: Oklahoma

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: $9,000
Crop damage: None recorded
Events: 7

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.

What happened

The episode as NWS TSA wrote it up.

Summary of events for August 13 1999:A southward-moving cold front helped to kick off an isolated cluster of severe thunderstorms. The first storms developed over southeastern Pushmataha County with the cluster developing to the southwest and eventually moving into Texas near the southwestern corner of Choctaw County. These storms produced golfball-sized hail and strong damaging winds. It should be noted that the last hail report was observed 5 miles from the storm core, meaning that there was likely much larger hail in the storm core as the storm exited Choctaw County near New Oberlin.

The radar

The Western Arkansas radar (KSRX), 150 km away, was scanning. The volume nearest the first event began at 22:16 UTC.

Open the radar archive at this moment

Event by event

4 thunderstorm wind, 3 hail. Local standard time, as filed.

Hail, Pushmataha

When: August 13, 4:15 PM CST
Where: Pushmataha County, 4 mi NE of Rattan
Measured: 1.75 in hail
Reported by: EMERGENCY MANAGER
Coordinates: 34.230, -95.370

Thunderstorm Wind, Pushmataha

When: August 13, 4:15 PM CST
Where: Pushmataha County, 4 mi NE of Rattan
Property damage: $1,000
Reported by: EMERGENCY MANAGER
Coordinates: 34.230, -95.370

Many large trees were blown over.

Hail, Pushmataha

When: August 13, 4:25 PM CST
Where: Pushmataha County, 1 mi E of Rattan
Measured: 0.88 in hail
Reported by: GENERAL PUBLIC
Coordinates: 34.200, -95.400

Thunderstorm Wind, Choctaw

When: August 13, 5:05 PM CST
Where: Choctaw County, 2 mi W of Unger
Property damage: $1,000
Reported by: LAW ENFORCEMENT
Coordinates: 34.030, -95.820

Several trees were damaged along US Hwy 70 between Unger and Soper.

Thunderstorm Wind, Choctaw

When: August 13, 5:25 PM CST
Where: Choctaw County, 4 mi S of Unger
Property damage: $6,000
Reported by: LAW ENFORCEMENT
Coordinates: 33.980, -95.780

A house along Unger Road experienced roof damage, and very large trees were blown down.

Thunderstorm Wind, Choctaw

When: August 13, 5:35 PM CST
Where: Choctaw County, 6 mi S of Unger
Property damage: $500
Reported by: LAW ENFORCEMENT
Coordinates: 33.950, -95.780

There was tree damage near the intersection of OK Hwy 109 and Unger Road.

Hail, Choctaw

When: August 13, 5:35 PM CST
Where: Choctaw County, 6 mi S of Unger
Measured: 0.75 in hail
Reported by: LAW ENFORCEMENT
Coordinates: 33.950, -95.780

Location: intersection of OK Hwy 109 and Unger Road.

What these are

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.

The same day elsewhere

More

Every storm in Oklahoma in 1999 Every state in 1999 This day in weather history Warnings in Oklahoma, August 1999

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: 5712520, 5712521, 5712522, 5712523, 5712524, 5712525, 5712526.