Alert archive / Arkansas / Flash Flood Warnings in 1990
Flash Flood Warning 35, NWS Tulsa, OK
NWS Tulsa, OK issued this flash flood warning at Sep 21, 1990, 8:48 AM CDT for Sebastian County, Arkansas. It was in force for 57 min.
The area
The counties it named.
The facts
- Issued
- Sep 21, 1990, 8:48 AM CDT (13:48 UTC)
- Expired
- Sep 21, 1990, 9:45 AM CDT
- In force
- 57 min
- Issued by
- NWS Tulsa, OK
- Area
- Whole counties
County Sebastian County, AR
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
The nearest sounding before it
Norman, OK (KOUN), launched 12:00Z, 1.8 hours before the alert went out and 284 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
- 683 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- -39 m²/s²
- 0-3 km storm-relative helicity
- 54 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 KFSM 211349 FFWFSM ARC131-211445- BULLETIN - EBS ACTIVATION REQUESTED FLASH FLOOD WARNING NATIONAL WEATHER SERVICE FORT SMITH AR 848 AM CDT FRI SEP 21 1990 THE NATIONAL WEATHER SERVICE IN FORT SMITH HAS ISSUED A FLASH FLOOD WARNING EFFECTIVE UNTIL 945 AM CDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN WEST ARKANSAS ...SEBASTIAN COUNTY RADAR AT 845 AM CDT WAS SHOWING HEAVY THUNDERSTORMS IN THE FORT SMITH AREA AND WILL CAUSE STREAMS TO OVERFLOW FLOODING STREETS AND LOW LYING AREAS. DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE ROADWAY. THE WATER DEPTH MAY BE TOO GREAT TO ALLOW YOUR CAR TO CROSS SAFELY. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED QUICKLY. MOVE TO HIGHER GROUND. A FLASH FLOOD WARNING MEANS THAT FLOODING IS IMMINENT. IT'S IMPORTANT TO KNOW WHERE YOU ARE RELATIVE TO STREAMS...RIVERS...OR CREEKS WHICH CAN BECOME KILLERS IN HEAVY RAINS. CAMPERS SHOULD AVOID CAMPING ALONG STREAMS OR CREEKSp DURING THREATENING RAINS.
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.
In the hours before
Special weather statement, Sep 21, 8:28 AM CDT, 20 minutes before
OKZ019-211630- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE TULSA OK 826 AM CDT FRI SEP 21 1990 ...HEAVY RAINS MOVING THROUGH SOUTHEASTERN OKLAHOMA... ANOTHER WAVE OF HEAVY RAIN IS MOVING THROUGH SOUTHEASTERN OKLAHOMA THIS MORNING. THE HEAVIEST RAIN AT 815 AM WAS BETWEEN MCALESTER AND FORT SMITH IN THE COUNTIES OF MCINTOSH...PITTSBURG...HASKELL...AND LATIMER. RAIN OBSERVING STATIONS IN THIS AREA REPORTED OVER 2 INCHES OF RAIN IN THE 24 HOUR PERIOD ENDING AT 7AM THIS MORNING...AND ANOTHER COUPLE OF INCHES IS POSSIBLE BEFORE TAPERING OFF LATER THIS AFTERNOON. ALTHOUGH THE RAIN IS WIDESPREAD...RADAR INDICATES THAT THE HEAVIEST THUNDERSTORMS ARE CONTINUING TO THE EAST. THIS REDUCES THE THREAT OF WIDESPREAD FLASH FLOODING OF STREAMS...AND MAJOR RAODWAYS. MINOR FLOODING WILL PROBABLY OCCUR ON SOME STREETS...SMALL CREEKS...AND LOW LYING AREAS. MOTORISTS ARE URGED TO EXCERCISE CAUTION WHEN DRIVING THROUGH AREAS OF HEAVY RAIN DUE TO REDUCED VISIBILITIES AND WATER STANDING ON THE ROADWAY. DO NOT DRIVE THROUGH WATER RUNNING ACROSS A ROAD...IT ONLY TAKES A COUPLE OF FEET OF WATER TO SWEEP A CAR OFF THE ROAD. A FLASH FLOOD WATCH CONTINUES IN EFFECT FOR THE AREA TODAY. PEOPLE IN SOUTHEASTERN OKLAHOMA SHOULD REMAIN ALERT FOR THE POSSIBILITY OF FLASH FLOODING AND BE PREPARED TO MOVE TO HIGH GROUND QUICKLY IF FLASH FLOODING IS OBSERVED. REPORT ANY FLOODING TO YOUR LOCAL LAW ENFORCEMENT AGENCY AND ASK THEM TO R2ELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE.
The office that day
Everything else NWS Tulsa, OK issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 21, 9:26 AM CDT | Flash Flood Warning | TSA | Crawford, Sebastian | 2 hr |
Nearby
Flash Flood Warnings in Arkansas, 1990Every flash flood warning in 1990
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.