

855 

WWUS20 KWNS 232242

SEL2

SPC WW 232242

ARZ000-LAZ000-OKZ000-TXZ000-240700-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 82

NWS STORM PREDICTION CENTER NORMAN OK

540 PM CDT FRI APR 23 2010



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       SOUTHWEST ARKANSAS

       FAR NORTHWEST LOUISIANA

       FAR SOUTHEAST OKLAHOMA

       EAST CENTRAL AND NORTHEAST TEXAS



EFFECTIVE THIS FRIDAY AFTERNOON AND SATURDAY MORNING FROM 540 PM

UNTIL 200 AM CDT.



TORNADOES...HAIL TO 3 INCHES IN DIAMETER...THUNDERSTORM WIND

GUSTS TO 80 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE

AREAS.



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 70 STATUTE

MILES EAST AND WEST OF A LINE FROM 35 MILES EAST NORTHEAST OF DE

QUEEN ARKANSAS TO 15 MILES WEST OF COLLEGE STATION TEXAS.  FOR A

COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE

UPDATE (WOUS64 KWNS WOU2).



REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR

TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH

AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR

THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS

AND POSSIBLE WARNINGS.



OTHER WATCH INFORMATION...CONTINUE...WW 80...WW 81...



DISCUSSION...TSTMS FORMING ALONG STALLED SW-NE BOUNDARY IN E TX

ATTM...APPARENTLY IN RESPONSE TO SFC HEATING/WEAK CONVERGENCE...

EXPECTED TO INTENSIFY AND POSSIBLE DEVELOP NEWD ALONG BOUNDARY AS

LARGE SCALE ASCENT INCREASES LATER THIS EVE DOWNSTREAM FROM W TX UPR

TROUGH.  ENVIRONMENT APPEARS FAVORABLE FOR STORM SPLITS...AND

BOUNDARY MAY EDGE NWWD SOMEWHAT LATER THIS EVE WITH APPROACH OF UPR

TROUGH...THUS WATCH EXTENDS INTO AREA NW OF PRESENT LOCATION OF

BOUNDARY.



AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL

SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE

WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO

550. MEAN STORM MOTION VECTOR 22030.





...CORFIDI

