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624 

WWUS20 KWNS 020940

SEL2

SPC WW 020940

ARZ000-LAZ000-TXZ000-021700-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 102

NWS STORM PREDICTION CENTER NORMAN OK

440 AM CDT THU APR 2 2009



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       FAR SOUTHERN ARKANSAS

       EASTERN LOUISIANA

       WESTERN AND NORTHERN TEXAS



EFFECTIVE THIS THURSDAY MORNING FROM 440 AM UNTIL NOON 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 85

STATUTE MILES EAST AND WEST OF A LINE FROM 30 MILES SOUTH

SOUTHWEST OF FORT POLK LOUISIANA TO 10 MILES NORTH OF TEXARKANA

ARKANSAS.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU2).



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 101...



DISCUSSION...BROKEN LINE OF STRONG TO SEVERE THUNDERSTORMS IS

EXPECTED TO INCREASE AHEAD OF INTENSE MID/UPPER LEVEL LOW AND SHIFT

QUICKLY ENEWD ACROSS WW THROUGH THE MORNING.  STRENGTHENING DEEP

LAYER SHEAR WILL REMAIN SUPPORTIVE OF SUPERCELLS ALONG WITH SMALL

BOWING SEGMENTS...ALTHOUGH STORMS SHOULD REMAIN SLIGHTLY ELEVATED

THROUGH THE MID TO LATE MORNING.  AS AIR MASS CONTINUES TO

DESTABILIZE/MOISTEN AHEAD OF THE LINE...SEVERE POTENTIAL SHOULD

INCREASE WITH PRIMARY THREATS OF LARGE HAIL AND ISOLATED 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 450. MEAN STORM

MOTION VECTOR 26035.





...EVANS

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