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000 

WWUS20 KWNS 260119

SEL5

SPC WW 260119

ARZ000-LAZ000-MSZ000-260800-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 75

NWS STORM PREDICTION CENTER NORMAN OK

720 PM CST MON FEB 25 2008



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       PARTS OF SOUTHERN ARKANSAS

       PARTS OF NORTHERN LOUISIANA

       PARTS OF NORTHERN AND CENTRAL MISSISSIPPI



EFFECTIVE THIS MONDAY NIGHT AND TUESDAY MORNING FROM 720 PM UNTIL

200 AM CST.



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 NORTH AND SOUTH OF A LINE FROM 25 MILES SOUTH OF

TEXARKANA ARKANSAS TO 40 MILES NORTHEAST OF GREENWOOD

MISSISSIPPI.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU5).



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.



DISCUSSION...THUNDERSTORMS EXPECTED TO INCREASE RAPIDLY IN NUMBER

AND INTENSITY ACROSS THE WATCH AREA WITH APPROACH OF STRONG UPPER

TROUGH. LOW LEVEL MOISTURE RETURNING NEWD ACROSS LOWER MS VALLEY

WITH INSTABILITY DEVELOPING SUFFICIENT FOR SEVERE THUNDERSTORMS.

PRIMARY CONCERN IS LARGE HAIL/DAMAGING WINDS AS FAST MOVING STORMS

EVOLVE INTO SHORT LINE SEGMENTS/BOWS.



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 25040.





...HALES

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