

536 

WWUS20 KWNS 271426

SEL0

SPC WW 271426

ARZ000-LAZ000-OKZ000-TXZ000-272000-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 200

NWS STORM PREDICTION CENTER NORMAN OK

925 AM CDT MON APR 27 2009



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       PARTS OF SOUTHWEST ARKANSAS

       PARTS OF NORTHWEST LOUISIANA

       SMALL PART OF SOUTHEAST OKLAHOMA

       PARTS OF NORTHEAST TEXAS



EFFECTIVE THIS MONDAY MORNING AND AFTERNOON FROM 925 AM UNTIL 300

PM CDT.



HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70

MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 60

STATUTE MILES EAST AND WEST OF A LINE FROM 5 MILES NORTH

NORTHEAST OF DE QUEEN ARKANSAS TO 70 MILES SOUTH SOUTHEAST OF

LONGVIEW TEXAS.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU0).



REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE

FAVORABLE FOR 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. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY

DO PRODUCE TORNADOES.



OTHER WATCH INFORMATION...CONTINUE...WW 197...WW 198...WW 199...



DISCUSSION...MATURE MCS WITH ASSOCIATED LINE OF SEVERE STORMS

CONTINUES EWD ACROSS NERN TX. WITH 30-40KT LLJ AND A MOIST/UNSTABLE

AIR MASS ACROSS WATCH AREA...SEVERE THREAT EXPECTED TO CONTINUE EWD

WITH PRIMARY CONCERN DAMAGING WINDS.



AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT

TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60

KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM

MOTION VECTOR 26035.





...HALES

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