

431 

WWUS20 KWNS 080033

SEL3

SPC WW 080033

ALZ000-MSZ000-TNZ000-080600-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 63

NWS STORM PREDICTION CENTER NORMAN OK

735 PM CDT WED APR 7 2010



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       SMALL PORTION OF NORTHWEST ALABAMA

       NORTHERN MISSISSIPPI

       WESTERN AND PARTS OF MIDDLE TENNESSEE



EFFECTIVE THIS WEDNESDAY NIGHT AND THURSDAY MORNING FROM 735 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 75

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

SOUTHWEST OF OXFORD MISSISSIPPI TO 95 MILES NORTHEAST OF JACKSON

TENNESSEE.  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 62...



DISCUSSION...VERY ORGANIZED ELEMENTS WITHIN BROADER SQUALL LINE WILL

CONTINUE MOVING ENEWD ACROSS WW THROUGH THE EVENING...INCLUDING

SMALL BOW ECHOES AND SUPERCELLS.  WIND DAMAGE THREAT WILL BE PRIMARY

CONCERN...ALTHOUGH ISOLATED LARGE HAIL AND POSSIBLY A BRIEF TORNADO

WILL BE ADDITIONAL HAZARDS GIVEN THE VERY STRONG SHEAR.



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 400. MEAN STORM

MOTION VECTOR 24035.





...EVANS

