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652 

WWUS20 KWNS 092253

SEL5

SPC WW 092253

MSZ000-100600-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 285

NWS STORM PREDICTION CENTER NORMAN OK

555 PM CDT SAT MAY 9 2009



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       CENTRAL MISSISSIPPI



EFFECTIVE THIS SATURDAY AFTERNOON AND SUNDAY MORNING FROM 555 PM

UNTIL 100 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 65

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 35 MILES SOUTH

SOUTHWEST OF GREENVILLE MISSISSIPPI TO 25 MILES NORTHEAST OF

MERIDIAN 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.



OTHER WATCH INFORMATION...CONTINUE...WW 280...WW 281...WW

282...WW 283...WW 284...



DISCUSSION...STRONG/WEAKLY ORGANIZED STORMS EXPECTED TO SPREAD

GRADUALLY E OR ESE ALONG AND JUST S OF OLD W-E OUTFLOW BOUNDARY

THROUGH CNTRL MS.  DEEP WIND FIELD IS WEAK...BUT DIFFLUENT.  COUPLED

WITH QUALITY OF LOW LVL  MOISTURE AND RELATIVELY STEEP MID LVL LAPSE

RATES...POTENTIAL WILL EXIST FOR WET MICROBURSTS WITH LOCALLY DMGG

WIND AND PERHAPS HAIL.



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 500. MEAN STORM

MOTION VECTOR 28020.





...CORFIDI

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