Alert archive / Arkansas / Flash Flood Warnings in 1999
Flash Flood Warning 74, NWS Tulsa, OK
NWS Tulsa, OK issued this flash flood warning at Jun 25, 1999, 6:15 PM CDT for Sebastian County, Arkansas; LeFlore County, Oklahoma. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.
The area
The outline the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.
The facts
- Issued
- Jun 25, 1999, 6:15 PM CDT (23:15 UTC)
- Expired
- Jun 25, 1999, 9:15 PM CDT
- In force
- 3 hr
- Issued by
- NWS Tulsa, OK
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
Counties Sebastian County, AR, LeFlore County, OK
The nearest sounding before it
Springfield, MO (KSGF), launched 12:00Z, 11.3 hours before the alert went out and 202 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
- 130 J/kg
- Mixed-layer CIN
- -60 J/kg
- Mixed-layer LCL
- 933 m above ground
- 0-6 km bulk shear
- 9 kt
- 0-1 km storm-relative helicity
- 36 m²/s²
- 0-3 km storm-relative helicity
- 50 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KTUL 252320 FFWTUL ARC131-OKC079-260215- BULLETIN - EAS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE TULSA OK 615 PM CDT FRI JUN 25 1999 THE NATIONAL WEATHER SERVICE IN TULSA HAS ISSUED A * FLASH FLOOD WARNING FOR SEBASTIAN COUNTY IN NORTHWEST ARKANSAS NORTHERN LE FLORE COUNTY IN SOUTHEAST OKLAHOMA * UNTIL 915 PM CDT * AT 615 PM CDT RADAR INDICATED A CLUSTER OF SHOWERS AND THUNDERSTORMS CAPABLE OF HEAVY RAINFALL OVER MUCH OF SEBASTIAN AND NORTHERN LE FLORE COUNTIES. THIS AREA OF RAINFALL WAS MOVING TO THE NORTH AT 10 MPH. RADAR ESTIMATES SHOW THAT BETWEEN 1 TO 2 INCHES OF RAIN HAS FALLEN OVER THE WARNED AREA DURING THE PAST FEW HOURS...WITH AN ADDITIONAL 1 TO 2 INCHES POSSIBLE IN THE NEXT 1 TO 2 HOURS. BLOOMER...JENNY LIND...BONANZA...EXCELSIOR...MIDLAND...HUNTINGTON... LAVACA...BARLING...GREENWOOD...HACKETT...FORT SMITH...ARKOMA... POCOLA...SPIRO...BOKOSHE...PANAMA AND CAMERON AND ADJACENT COMMUNITIES MAY BE AFFECTED BY FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE ROADWAY. THE WATER MAY BE TOO DEEP TO ALLOW YOUR CAR TO CROSS SAFELY. LAT...LON 3510 9484 3504 9425 3541 9410 3532 9480
What forecasters said that day
The local office's own words before this flash flood 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 flash flood warning went out at Jun 25, 3:35 PM CDT, 2 hours 40 minutes earlier.
Area forecast discussion, Jun 25, 3:35 PM CDT, 2 hours 40 minutes before
EASTERN OKLAHOMA/NORTHWEST ARKANSAS FORECAST DISCUSSION NATIONAL WEATHER SERVICE TULSA OK 335 PM CDT FRI JUN 25 1999 DUE TO AWIPS PROBLEMS...EXPERIMENTAL DATA WILL NOT BE AVAILABLE. MODELS IN FAIRLY GOOD AGREEMENT THRU FORECAST PERIOD. UPPER LOW/ WEAK VORT WILL CONTINUE MOVING EAST ACROSS EASTERN OKLAHOMA TONIGHT AND INTO ARKANSAS ON SATURDAY. CLOUD COVER HAS REMAINED THICK ACROSS NORTHERN SECTIONS...AND WITH BEST LIFT EVIDENT IN AREAS WHERE TEMPERATURES HAVE WARMED INTO MID TO UPPER 80S. ISOLATED SEVERE THUNDERSTORMS ARE NOT OUT OF QUESTION THIS EVENING IN THESE AREAS. SURFACE COLD FRONT IN THE NORTHERN PLAINS WILL DROP INTO NORTHEAST OKLAHOMA LATE SAT/EARLY SUNDAY MOVING SLOWLY SOUTH THROUGH FORECAST AREA THROUGH MONDAY. AVN/MRF CONTINUE TO ADVERTISE STRENGTHENING CAP AT 700 MB STARTING TOMORROW BUT NGM/ETA NOT SHOWING AS MUCH OF A WARM-UP. WILL KEEP CHANCE POPS IN THROUGH THE EXTENDED PERIOD WITH HIGHER POPS AHEAD/ALONG FRONTAL BOUNDARY SUNDAY. FCST=33 TUL 071/087 074/089 070 323 FSM 070/088 072/091 071 433 MLC 071/089 072/090 071 433 BVO 069/087 071/088 068 323 FYV 067/086 068/087 067 433 IDB 070/090 070/091 070 433 BYV 067/085 067/087 067 433 MIO 068/086 068/088 069 433 MKO 071/087 074/089 070 323 F10 071/088 074/090 070 433 HHW 070/090 071/088 068 433 .TUL... OK...NONE. AR...NONE.
In the hours before
Special weather statement, Jun 25, 1:00 PM CDT, 5 hours 15 minutes before
ARZ001-002-010-011-019-020-029-OKZ049-053>076-261100- EASTERN OKLAHOMA/NORTHWEST ARKANSAS HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE TULSA OK 100 PM CDT FRI JUN 25 1999 ISOLATED SEVERE THUNDERSTORMS WILL BE POSSIBLE ACROSS EASTERN OKLAHOMA AND NORTHWEST ARKANSAS LATE THIS AFTERNOON AND THIS EVENING. .SYNOPSIS... A WEAK AREA OF LOW PRESSURE IN THE UPPER ATMOSPHERE LOCATED OVER WESTERN OKLAHOMA EARLY THIS AFTERNOON WILL MOVE SLOWLY TO THE EAST INTO NORTHWEST ARKANSAS BY LATE TONIGHT. SCATTERED SHOWERS AND THUNDERSTORMS WILL CONTINUE TO DEVELOP NEAR AND AHEAD OF THIS LOW PRESSURE SYSTEM THIS AFTERNOON AND TONIGHT. .DISCUSSION... BOUNTIFUL MOISTURE REMAINS IN PLACE ACROSS EASTERN OKLAHOMA AND NORTHWEST ARKANSAS THIS AFTERNOON AND TEMPERATURES HAVE ALREADY WARMED INTO THE LOWER 80S IN SOME LOCATIONS. LOW CLOUDS HAVE HINDERED WARMING ACROSS MUCH OF NORTHEAST OKLAHOMA...BUT THESE CLOUDS ARE EXPECTED TO DISSIPATE THROUGH THE AFTERNOON ALLOWING FOR BETTER DESTABILIZATION IN THIS AREA AS WELL. A FEW SHOWERS HAVE ALREADY DEVELOPED ACROSS PORTIONS EAST CENTRAL OKLAHOMA WHERE TEMPERATURES HAVE WARMED INTO THE LOWER 80S. WITH MOST LOCATIONS EXPECTED TO WARM INTO THE MID 80S THIS AFTERNOON AND THE UPPER-LEVEL LOW PRESSURE SYSTEM MOVING OVER THE AREA...SCATTERED SHOWERS AND THUNDERSTORMS ARE EXPECTED TO DEVELOP OVER THE ENTIRE AREA THROUGH THE AFTERNOON AND EVENING HOURS. VERY WEAK WINDS AT ALL LEVELS OF THE ATMOSPHERE WILL NOT ALLOW FOR ANY ORGANIZED SEVERE THUNDERSTORM ACTIVITY...BUT GIVEN THE AMOUNT OF INSTABILITY A FEW OF THE THUNDERSTORMS MAY BRIEFLY PULSE UP TO PRODUCE MARGINALLY SEVERE HAIL AND WIND GUSTS. DUE TO THE VERY SLOW MOVEMENT OF THE STORMS...TORRENTIAL RAINS MAY PERSIST IN SOME LOCATIONS...CREATING THE POSSIBILITY OF FLASH FLOODING. THE STORMS SHOULD COME TO AN END ACROSS MUCH OF EASTERN OKLAHOMA THIS EVENING...BUT THEY MAY PERSIST AHEAD OF THE UPPER-LEVEL LOW OVER NORTHWEST ARKANSAS THROUGHOUT THE EVENING AND INTO THE EARLY MORNING HOURS. .EMERGENCY MANAGEMENT AGENCY AND SPOTTER ACTIVATION... SPOTTER ACTIVATION IS NOT ANTICIPATED DUE TO THE EXPECTED BRIEF NATURE OF THE THUNDERSTORMS.
Special weather statement, Jun 25, 1:00 PM CDT, 5 hours 15 minutes before
ARZ001-002-010-011-019-020-029-OKZ049-053>076-261100- EASTERN OKLAHOMA/NORTHWEST ARKANSAS HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE TULSA OK 100 PM CDT FRI JUN 25 1999 ISOLATED SEVERE THUNDERSTORMS WILL BE POSSIBLE ACROSS EASTERN OKLAHOMA AND NORTHWEST ARKANSAS LATE THIS AFTERNOON AND THIS EVENING. .SYNOPSIS... A WEAK AREA OF LOW PRESSURE IN THE UPPER ATMOSPHERE LOCATED OVER WESTERN OKLAHOMA EARLY THIS AFTERNOON WILL MOVE SLOWLY TO THE EAST INTO NORTHWEST ARKANSAS BY LATE TONIGHT. SCATTERED SHOWERS AND THUNDERSTORMS WILL CONTINUE TO DEVELOP NEAR AND AHEAD OF THIS LOW PRESSURE SYSTEM THIS AFTERNOON AND TONIGHT. .DISCUSSION... BOUNTIFUL MOISTURE REMAINS IN PLACE ACROSS EASTERN OKLAHOMA AND NORTHWEST ARKANSAS THIS AFTERNOON AND TEMPERATURES HAVE ALREADY WARMED INTO THE LOWER 80S IN SOME LOCATIONS. LOW CLOUDS HAVE HINDERED WARMING ACROSS MUCH OF NORTHEAST OKLAHOMA...BUT THESE CLOUDS ARE EXPECTED TO DISSIPATE THROUGH THE AFTERNOON ALLOWING FOR BETTER DESTABILIZATION IN THIS AREA AS WELL. A FEW SHOWERS HAVE ALREADY DEVELOPED ACROSS PORTIONS EAST CENTRAL OKLAHOMA WHERE TEMPERATURES HAVE WARMED INTO THE LOWER 80S. WITH MOST LOCATIONS EXPECTED TO WARM INTO THE MID 80S THIS AFTERNOON AND THE UPPER-LEVEL LOW PRESSURE SYSTEM MOVING OVER THE AREA...SCATTERED SHOWERS AND THUNDERSTORMS ARE EXPECTED TO DEVELOP OVER THE ENTIRE AREA THROUGH THE AFTERNOON AND EVENING HOURS. VERY WEAK WINDS AT ALL LEVELS OF THE ATMOSPHERE WILL NOT ALLOW FOR ANY ORGANIZED SEVERE THUNDERSTORM ACTIVITY...BUT GIVEN THE AMOUNT OF INSTABILITY A FEW OF THE THUNDERSTORMS MAY BRIEFLY PULSE UP TO PRODUCE MARGINALLY SEVERE HAIL AND WIND GUSTS. DUE TO THE VERY SLOW MOVEMENT OF THE STORMS...TORRENTIAL RAINS MAY PERSIST IN SOME LOCATIONS...CREATING THE POSSIBILITY OF FLASH FLOODING. THE STORMS SHOULD COME TO AN END ACROSS MUCH OF EASTERN OKLAHOMA THIS EVENING...BUT THEY MAY PERSIST AHEAD OF THE UPPER-LEVEL LOW OVER NORTHWEST ARKANSAS THROUGHOUT THE EVENING AND INTO THE EARLY MORNING HOURS. .EMERGENCY MANAGEMENT AGENCY AND SPOTTER ACTIVATION... SPOTTER ACTIVATION IS NOT ANTICIPATED DUE TO THE EXPECTED BRIEF NATURE OF THE THUNDERSTORMS.
Nearby
Flash Flood Warnings in Arkansas, 1999Flash Flood Warnings in Oklahoma, 1999Every flash flood 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; the sounding from the Mesonet's radiosonde archive.