Alert archive / Arkansas / Severe Thunderstorm Warnings in 1999
Severe Thunderstorm Warning 387, NWS Tulsa, OK
NWS Tulsa, OK issued this severe thunderstorm warning at Jun 29, 1999, 3:51 PM CDT for Franklin County, Arkansas. It was in force for 39 min. 2 reports came from inside the area while it was in force.
The area
The counties it named, with what was reported inside it.
The facts
- Issued
- Jun 29, 1999, 3:51 PM CDT (20:51 UTC)
- Expired
- Jun 29, 1999, 4:30 PM CDT
- In force
- 39 min
- Issued by
- NWS Tulsa, OK
- Area
- Whole counties
County Franklin County, AR
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jun 29, 4:02 PM CDT | Thunderstorm Wind 57 | Charleston, AR | |
| Jun 29, 4:20 PM CDT | Thunderstorm Wind | Altus, AR | Numerous power lines and trees were blown down in Altus. |
NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jun 29, 1:30 PM CDT | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Springfield, MO (KSGF), launched 12:00Z, 8.9 hours before the alert went out and 155 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1069 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- -73 m²/s²
- 0-3 km storm-relative helicity
- 65 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Tulsa, OK wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 29, 12:40 PM CDT, 3 hours 11 minutes earlier.
Area forecast discussion, Jun 29, 12:40 PM CDT, 3 hours 11 minutes before
EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE TULSA OK 1240 PM CDT TUE JUN 29 1999 CONVECTION HAS MOVED FAR ENOUGH EAST THAT AMPLE CLOUD COVER HAS MOVED OVER THE FA. WENT AHEAD AND ADJUSTED SKY CONDITION TO MOSTLY CLOUDY OVER ALL ZONES. WITH CONVECTION BATTLING DRIER AIR AS IT MOVES FURTHER EAST...WILL LET CHANCE POPS RIDE. CLOUDS MAY BE THIN ENOUGH OVER MOST PLACES TO LET FORECASTED HIGHS STAY UNCHANGED. UPDATED ZONES ALREADY SENT. FCSTID = 23 .TUL... AR...NONE. OK...NONE.
In the hours before
Special weather statement, Jun 29, 1:30 PM CDT, 2 hours 21 minutes before
ARZ001-002-010-011-019-020-029-OKZ049-053>076-301100- EASTERN OKLAHOMA/NORTHWEST ARKANSAS HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE TULSA OK 130 PM CDT TUE JUN 29 1999 A FEW SEVERE THUNDERSTORMS ARE EXPECTED ACROSS EASTERN OKLAHOMA AND NORTHWEST ARKANSAS. THE STORMS WILL OCCUR THIS AFTERNOON PRIMARILY SOUTH OF THE CIMARRON AND MUSKOGEE TURNPIKES. HOWEVER...THE ACTIVITY WILL BECOME MORE NUMEROUS AND MORE WIDESPREAD OVER ALL OF EASTERN OKLAHOMA AND NORTHWEST ARKANSAS TONIGHT. .SYNOPSIS... A FRONT WILL REMAIN NEARLY STATIONARY ACROSS SOUTHEAST OKLAHOMA THIS AFTERNOON...BUT IT WILL DRIFT NORTHWARD AS A WARM FRONT TONIGHT. .DISCUSSION... NORTHEAST WINDS BROUGHT SLIGHTLY DRIER AIR MOVED INTO EASTERN OKLAHOMA AND NORTHWEST ARKANSAS EARLY THIS MORNING. HOWEVER...IT IS BEING DISPLACED BY WARM...MOIST AND UNSTABLE AIR WHICH HAS BEEN SPREADING NORTHWARD OUT OF TEXAS. AS THIS TROPICAL AIR MASS RETURNS TO EASTERN OKLAHOMA AND NORTHWEST ARKANSAS...IT WILL FUEL THE DEVELOPMENT OF STRONG TO SEVERE THUNDERSTORMS. THUNDERSTORMS HAVE ALREADY DEVELOPED EARLY THIS AFTERNOON ACROSS PARTS OF EASTERN OKLAHOMA...MAINLY SOUTH OF INTERSTATE 40...AND A SEVERE THUNDERSTORM WATCH HAS BEEN ISSUED FOR A LARGE PART OF EASTERN OKLAHOMA AND WEST CENTRAL ARKANSAS. MOST OF THESE STORMS WILL BE PULSE-TYPE STORMS WHICH MAY DEVELOP RAPIDLY AND PRODUCE A DAMAGING WIND GUST BEFORE DISSIPATING. VERY HEAVY DOWNPOURS ARE POSSIBLE DUE TO THE SLOW MOVEMENT OF THE STORMS. HOWEVER...THE MORE ORGANIZED SEVERE WEATHER THREAT IS EXPECTED TO OCCUR TONIGHT. A COMPLEX OF STRONG TO SEVERE THUNDERSTORMS IS EXPECTED TO DEVELOP OVER NORTHWEST OKLAHOMA AND SOUTHWEST KANSAS THIS EVENING AND THEN PROPOGATE SOUTHEASTWARD AS IT IS FED BY A DEVELOPING LOW LEVEL JET. THE LEADING EDGE OF THE ACTIVITY MAY DEVELOP INTO A SQUALL LINE WITH THE POTENTIAL FOR DAMAGING WINDS. LARGE HAIL AND VERY HEAVY RAINS WILL ALSO BE A POSSIBILITY. .EMERGENCY MANAGEMENT AGENCY AND SPOTTER ACTIVATION... SPOTTER ACTIVATION IS LIKELY ACROSS EASTERN OKLAHOMA AND NORTHWEST ARKANSAS THIS AFTERNOON AND TONIGHT. THE MAIN TIME FRAME SHOULD BE THIS AFTERNOON IN THE SOUTHERN TWO THIRDS OF EASTERN OKLAHOMA AND WEST CENTRAL ARKANSAS THIS AFTERNOON. THE THREAT WILL BE ACROSS ALL OF EASTERN OKLAHOMA AND NORTHWEST ARKANSAS TONIGHT. CIVIL DEFENSE AGENCIES SHOULD MONITOR THE LATEST STATEMENTS AND FORECASTS CONCERNING THIS POTENTIALLY THREATENING WEATHER SITUATION.
Special weather statement, Jun 29, 1:30 PM CDT, 2 hours 21 minutes before
ARZ001-002-010-011-019-020-029-OKZ049-053>076-301100- EASTERN OKLAHOMA/NORTHWEST ARKANSAS HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE TULSA OK 130 PM CDT TUE JUN 29 1999 A FEW SEVERE THUNDERSTORMS ARE EXPECTED ACROSS EASTERN OKLAHOMA AND NORTHWEST ARKANSAS. THE STORMS WILL OCCUR THIS AFTERNOON PRIMARILY SOUTH OF THE CIMARRON AND MUSKOGEE TURNPIKES. HOWEVER...THE ACTIVITY WILL BECOME MORE NUMEROUS AND MORE WIDESPREAD OVER ALL OF EASTERN OKLAHOMA AND NORTHWEST ARKANSAS TONIGHT. .SYNOPSIS... A FRONT WILL REMAIN NEARLY STATIONARY ACROSS SOUTHEAST OKLAHOMA THIS AFTERNOON...BUT IT WILL DRIFT NORTHWARD AS A WARM FRONT TONIGHT. .DISCUSSION... NORTHEAST WINDS BROUGHT SLIGHTLY DRIER AIR MOVED INTO EASTERN OKLAHOMA AND NORTHWEST ARKANSAS EARLY THIS MORNING. HOWEVER...IT IS BEING DISPLACED BY WARM...MOIST AND UNSTABLE AIR WHICH HAS BEEN SPREADING NORTHWARD OUT OF TEXAS. AS THIS TROPICAL AIR MASS RETURNS TO EASTERN OKLAHOMA AND NORTHWEST ARKANSAS...IT WILL FUEL THE DEVELOPMENT OF STRONG TO SEVERE THUNDERSTORMS. THUNDERSTORMS HAVE ALREADY DEVELOPED EARLY THIS AFTERNOON ACROSS PARTS OF EASTERN OKLAHOMA...MAINLY SOUTH OF INTERSTATE 40...AND A SEVERE THUNDERSTORM WATCH HAS BEEN ISSUED FOR A LARGE PART OF EASTERN OKLAHOMA AND WEST CENTRAL ARKANSAS. MOST OF THESE STORMS WILL BE PULSE-TYPE STORMS WHICH MAY DEVELOP RAPIDLY AND PRODUCE A DAMAGING WIND GUST BEFORE DISSIPATING. VERY HEAVY DOWNPOURS ARE POSSIBLE DUE TO THE SLOW MOVEMENT OF THE STORMS. HOWEVER...THE MORE ORGANIZED SEVERE WEATHER THREAT IS EXPECTED TO OCCUR TONIGHT. A COMPLEX OF STRONG TO SEVERE THUNDERSTORMS IS EXPECTED TO DEVELOP OVER NORTHWEST OKLAHOMA AND SOUTHWEST KANSAS THIS EVENING AND THEN PROPOGATE SOUTHEASTWARD AS IT IS FED BY A DEVELOPING LOW LEVEL JET. THE LEADING EDGE OF THE ACTIVITY MAY DEVELOP INTO A SQUALL LINE WITH THE POTENTIAL FOR DAMAGING WINDS. LARGE HAIL AND VERY HEAVY RAINS WILL ALSO BE A POSSIBILITY. .EMERGENCY MANAGEMENT AGENCY AND SPOTTER ACTIVATION... SPOTTER ACTIVATION IS LIKELY ACROSS EASTERN OKLAHOMA AND NORTHWEST ARKANSAS THIS AFTERNOON AND TONIGHT. THE MAIN TIME FRAME SHOULD BE THIS AFTERNOON IN THE SOUTHERN TWO THIRDS OF EASTERN OKLAHOMA AND WEST CENTRAL ARKANSAS THIS AFTERNOON. THE THREAT WILL BE ACROSS ALL OF EASTERN OKLAHOMA AND NORTHWEST ARKANSAS TONIGHT. CIVIL DEFENSE AGENCIES SHOULD MONITOR THE LATEST STATEMENTS AND FORECASTS CONCERNING THIS POTENTIALLY THREATENING WEATHER SITUATION.
Local storm report, Jun 29, 3:44 PM CDT, 7 minutes before
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</html>Local storm report, Jun 29, 3:44 PM CDT, 7 minutes before
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</html>Local storm report, Jun 29, 3:50 PM CDT, 1 minute before
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</html>Local storm report, Jun 29, 3:50 PM CDT, 1 minute before
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</html>The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 29, 1:56 PM CDT | Severe Thunderstorm Warning | TSA | Latimer, Pittsburg | 49 min |
| Jun 29, 1:56 PM CDT | Severe Thunderstorm Warning | TSA | Latimer, Pittsburg | 34 min |
| Jun 29, 2:42 PM CDT | Flash Flood Warning | TSA | Haskell, Latimer | 3 hr |
| Jun 29, 3:05 PM CDT | Severe Thunderstorm Warning | TSA | Haskell, LeFlore, Sequoyah | 40 min |
| Jun 29, 3:15 PM CDT | Severe Thunderstorm Warning | TSA | Crawford, Sebastian | 60 min |
| Jun 29, 4:22 PM CDT | Flash Flood Warning | TSA | Crawford, Franklin | 2 hr |
Nearby
Severe Thunderstorm Warnings in Arkansas, 1999Every severe thunderstorm warning in 1999
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.