Oklahoma, 1999

Flash Flood and Hail in Oklahoma, April 14, 1999

April 14, 1999 · NWS TSA · 4 events in 2 counties and zones

Summary of events for April 14 1999:The center of an upper level low pressure system passed east over southern Oklahoma on the afternoon and evening of April 14. Near the center of the upper level system, where the coldest air aloft was located, an isolated severe thunderstorm formed over Latimer County.

Where it happened

Every event with a place to put it; 1 filed by county or forecast zone are drawn at its center, in a lighter ring. 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
None recorded
Crop damage
None recorded
Events
4

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 April 14 1999:The center of an upper level low pressure system passed east over southern Oklahoma on the afternoon and evening of April 14. Near the center of the upper level system, where the coldest air aloft was located, an isolated severe thunderstorm formed over Latimer County. While this thunderstorm showed strong rotation, it never produced a tornado. However, it did produce hail as large as golfballs and locally excessive rainfall. A short-lived severe thunderstorm also developed over northwest Muskogee County, affecting a very small area just west of Jamesville.

The radar

The national radar mosaic for the moment the first event began.

Open the radar archive at this moment

Event by event

3 hail, 1 flash flood. Local standard time, as filed.

Hail, Latimer

When
April 14, 5:44 PM CST
Where
Latimer County, 1 mi N of Panola
Measured
1.75 in hail
Reported by
EMERGENCY MANAGER
Coordinates
34.930, -95.220

Hail, Muskogee

When
April 14, 5:56 PM CST
Where
Muskogee County, 1 mi W of Jamesville
Measured
1 in hail
Reported by
OFFICIAL NWS OBS.
Coordinates
35.750, -95.670

Hail, Latimer

When
April 14, 6:20 PM CST
Where
Latimer County, 8 mi NE of Red Oak
Measured
1 in hail
Reported by
AMATEUR RADIO
Coordinates
35.030, -94.980

Flash Flood, Latimer

When
April 14, 6:45 PM CST to 7:45 PM CST
Where
Latimer County, Northeast Portion
Reported by
EMERGENCY MANAGER
Coordinates
34.876, -95.250 (the zone’s center; the record gives no point)

US Hwy 270 in northeast Latimer County was impassable due to high water.

What these are

Hail
Hail three-quarters of an inch or larger, or smaller hail that caused damage, filed with the largest stone measured.
Flash Flood
Flooding that begins within six hours of the rain that causes it, or of a dam or levee failure or ice jam release, often with deadly speed.

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

The same day elsewhere

More

Every storm in Oklahoma in 1999Every state in 1999This day in weather historyWarnings in Oklahoma, April 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: 5690632, 5690634, 5690631, 5690633.