Flash Flood Warning 12, NWS Shreveport, LA

Issued

Feb 20, 1997, 6:04 PM CST (00:04 UTC)

Expired

Feb 20, 1997, 10:00 PM CST

In force

4 hr

Issued by

NWS Shreveport, LA

Area

Whole counties

Counties Gregg County, TX, Rusk County, TX

The Shreveport radar (KSHV), 91 km from the middle of the area, began a volume at 00:03 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

000 
TTAA00 KSHV 210004
FFWSHV
TXC037-067-183-203-315-401-210400-
 
BULLETIN - EAS ACTIVATION REQUESTED
FLASH FLOOD WARNING
NATIONAL WEATHER SERVICE SHREVEPORT LA
604 PM CST THU FEB 20 1997
 
THE NATIONAL WEATHER SERVICE IN SHREVEPORT HAS ISSUED A
FLASH FLOOD WARNING EFFECTIVE UNTIL 1000 PM CST
FOR THE FOLLOWING AREAS...
 
IN NORTHEAST TEXAS
 
   ...BOWIE COUNTY...CASS COUNTY...GREGG COUNTY...HARRISON COUNTY
   ...MARION COUNTY...RUSK COUNTY
 
AT 600 PM CST DOPPLER RADAR IN SHREVEPORT SHOWED A LARGE AREA OF
SHOWERS AND THUNDERSTORMS OVER NORTHEAST TEXAS THAT EXTENDED
GENERALLY WEST OF A LINE FROM NEAR NEW BOSTON TEXAS SOUTH
TO NEAR HENDERSON AND MOUNT ENTERPRISE. MOVEMENT WAS TO THE
NORTHEAST AT ABOUT 45 MPH...BUT THE SHOWERS CONTINUED TO DEVELOP
AND SPREAD OVER THE SAME AREAS WITH SOME LOCATIONS RECEIVING
AMOUNTS TO NEAR 2 INCHES.
 
ALONG THE LEADING EDGE OF THE SHOWERS AND THUNDERSTORMS DOPPLER
RADAR ESTIMATED AMOUNTS OF ONE TO TWO INCHES PER HOUR. THIS HEAVY
RAINFALL HAS PRODUCE SOME STREET AND LOW AREA FLOODING...AND
ADDITIONAL HEAVY RAINFALL WILL CAUSE ADDITIONAL FLOODING.
 
...A FLASH FLOOD WATCH CONTINUE IN EFFECT...
 
 
DO NOT DRIVE YOUR VEHICLE INTO AREAS WHERE THE WATER COVERS THE
ROADWAY. VEHICLES CAUGHT IN RISING WATER SHOULD BE ABANDONED
IMMEDIATELY.
 
BE ESPECIALLY CAUTIOUS AT NIGHT WHEN IT IS HARDER TO RECOGNIZE
THE DANGERS OF FLOODS AND FLASH FLOODS. IF FLASH FLOODING IS
OBSERVED...MOVE QUICKLY TO HIGHER GROUND.

NWS Shreveport, LA wrote its last area forecast discussion before this flash flood warning went out at Feb 20, 2:15 PM CST, 3 hours 49 minutes earlier.

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SHREVEPORT LA
215 PM CST THU FEB 20 1997

SAT IMAGERY INDICATING UPR LVL LOW JUST ENE OF DRT ERLY THIS AFTN.
MODELS DIFFER SLIGHTLY ON FCST MOVEMENT OF THIS LOW. PREFER THE AVN
MOVEMENT OVER NGM AND ETA. AVN LIFTS THE LOW MORE NE WHILE ETA PULLS
ALMOST DUE N. NGM IS BETWEEN THE TWO. WITH NEXT S/WV PUSHING INTO
THE WRN GREAT PLNS THIS AFTN AND EVNG...THIS LOW OVR S TX SHUD BE
PICKED AND CARRIED TO THE NE. UPR LVL LOW OVER TX BCMS AN OPEN WAVE
BY LATE THIS EVNG WITH S/WV LIFTING OVER NE TX AND INTO SE OK...SW AR
ARND MIDNIGHT. THIS PUTS CWA IN PRIME POSITION FOR SVR WX THIS EVNG AND
TONIGHT. AS NEGATIVELY TILTED TROF AND PVA APRCH CWA...BOUNDARY LYR
WNDS SHUD RMN SE CREATING BETTER SHEAR. BREAKS IN CLD CVR LATE THIS
MRNG AND ERLY THIS AFTN ALLOWED ENUF WARMING TO INCREASE INSTABILITY
OVER THE AREA AS WELL.

HEAVY RAIN THREAT NOT OVER YET BUT FEEL HEAVIEST RAINS SHUD FALL JUST N
AND S OF CWA WHERE BEST LOW LVL MSTR CONVERGENCE EXISTS. SPEED OF CEL
MOVEMENT WILL ALSO KEEP PCPN AMOUNTS FROM BECOMING TOO LARGE BUT SOME
TRAINING IS LIKELY. FEEL FFA SHUD BE CONTD THRU TONIGHT.

AVN AND NGM SIMILAR WITH MOVING UPR LVL TROF OVR AND TO THE E OF THE
CWA BY LATE FRI ITH CDFNT OUSHING THRU THE CWA BY LATE MRNG FRI. THIS
SHUD EFFECTIVELY END PCPN AS DRY AIR WORKS INTO THE AREA BEHIND THE FNT
BUT CLDS LIKELY TO LINGER THRU THE AFTN. SOME TSTM ACTIVITY WILL LINGER
AS WELL ACRS EXTREME ERN PORTIONS OF THE CWA FRI MRNG BUT SHUD END
BEFORE NOON.

MID/UPR LVL FLOW RMNS WSW THRU 72 HOURS ACCORDING TO AVN. THIS SHUD
KEEP ENUF MSTR OVER THE AREA FOR SOME CLDS TO RTN ON SUN. NEXT UPR LVL
LOW HINTED AT OVR THE SWRN U.S. BY LATE SUN AND ERLY MON. WILL LIKELY
HAVE TO REINTRODUCE POPS BY ATE MON OR ERLY TUE INTO THE CWA.

WILL FOLLOW AVN POPS CLOSE FOR FIRST TWO PERIODS THEN ELIMINATE POPS
FOR FRI NIGHT AND SAT AS DRY AIR SHUD END CHCS FOR PCPN. WILL COMPROMISE
ON TONIGHTS LOW TEMP THEN FOLLOW AVN TEMPS FOR FRI THRU SAT.

SHV 55/59/35/53 8300  MLU 57/63/38/54 9400

18

Flash Flood Warnings in Texas, 1997Every flash flood warning in 1997

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; radar from the NEXRAD Level II archive.