

729 

WWUS20 KWNS 032230

SEL2

SPC WW 032230

ARZ000-LAZ000-MSZ000-040300-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 2

NWS STORM PREDICTION CENTER NORMAN OK

430 PM CST SAT JAN 3 2009



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       SMALL PART OF SOUTHEAST ARKANSAS

       PARTS OF NORTHEAST LOUISIANA

       PARTS OF WESTERN MISSISSIPPI



EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 430 PM UNTIL

900 PM 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 50

STATUTE MILES EAST AND WEST OF A LINE FROM 80 MILES NORTHEAST OF

MONROE LOUISIANA TO 35 MILES WEST SOUTHWEST OF NATCHEZ

MISSISSIPPI.  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.



DISCUSSION...AIRMASS HAS DESTABILIZED IN WAKE OF EARLIER CONVECTION

AND WITH STEEP LAPSE RATES AND 30-40KT OF SHEAR THUNDERSTORMS ARE

DEVELOPING WITH POTENTIAL FOR ROTATING UPDRAFTS.  STRONG/SEVERE

THUNDERSTORMS WILL DEVELOP EWD ACROSS WATCH WITH PRIMARY THREAT

LARGE HAIL AND ISOLATED WIND DAMAGE.



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 24025.





...HALES

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