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000 

WWUS20 KWNS 110756

SEL3

SPC WW 110756

ARZ000-LAZ000-MSZ000-111500-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 123

NWS STORM PREDICTION CENTER NORMAN OK

255 AM CDT WED APR 11 2007



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       EASTERN ARKANSAS

       NORTHEAST LOUISIANA

       WESTERN AND NORTHERN MISSISSIPPI



EFFECTIVE THIS WEDNESDAY MORNING FROM 255 AM UNTIL 1000 AM CDT.



HAIL TO 1.5 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 70

STATUTE MILES EAST AND WEST OF A LINE FROM 40 MILES NORTH

NORTHWEST OF OXFORD MISSISSIPPI TO 55 MILES EAST SOUTHEAST OF

MONROE LOUISIANA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU3).



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 122...



DISCUSSION...ERN/SRN AR SQLN...NRN PART OF WHICH APPEARS TO BE

SLIGHTLY ELEVATED...EXPECTED TO CONTINUE GENERALLY E AT 40+ KTS.

EMBEDDED SUSTAINED STORMS/SUPERCELLS MAY CONTINUE TO POSE A THREAT

FOR HAIL/HIGH WIND AND PERHAPS A TORNADO AS AREA OF LARGE SCALE

ASCENT/MID LEVEL COOLING ASSOCIATED WITH AMPLIFYING UPR TROUGH/JET

STREAK MOVE E IN TANDEM WITH STORMS.



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

TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60

KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 450. MEAN STORM

MOTION VECTOR 27040.





...CORFIDI

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