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065 

WWUS20 KWNS 250016

SEL9

SPC WW 250016

ALZ000-GAZ000-MSZ000-250700-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 99

NWS STORM PREDICTION CENTER NORMAN OK

715 PM CDT SAT APR 24 2010



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       CENTRAL AND NORTHERN ALABAMA

       NORTHERN AND WESTERN GEORGIA

       EAST CENTRAL MISSISSIPPI



EFFECTIVE THIS SATURDAY NIGHT AND SUNDAY MORNING FROM 715 PM

UNTIL 200 AM CDT.



TORNADOES...HAIL TO 1.5 INCHES IN DIAMETER...THUNDERSTORM WIND

GUSTS TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE

AREAS.



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 90 STATUTE

MILES EAST AND WEST OF A LINE FROM 50 MILES NORTH NORTHEAST OF

ROME GEORGIA TO 45 MILES EAST SOUTHEAST OF MERIDIAN MISSISSIPPI.

FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH

OUTLINE UPDATE (WOUS64 KWNS WOU9).



REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR

TORNADOES AND 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.



OTHER WATCH INFORMATION...CONTINUE...WW 94...WW 95...WW 96...WW

97...WW 98...



DISCUSSION...TSTMS/SUPERCELLS EXPECTED TO CONTINUE FORMING ALONG LOW

LVL CONFLUENCE BAND NOW EXTENDING FROM E CNTRL MS INTO NE AL.

ACTIVITY MAY BE SUPPORTED BY APPROACH OF APPARENT LOW AMPLITUDE UPR

IMPULSE NOW IN E TX.  STRENGTH OF SHEAR AND CONTINUED INFLOW OF RICH

LOW LVL MOISTURE SUGGEST POTENTIAL FOR ISOLD TORNADOES DESPITE LOSS

OF SFC HEATING/PRESENCE OF EML CINH.



GRADUAL LOW LVL DESTABILIZATION SHOULD CONTINUE TO PROGRESS E INTO

WRN AND NRN GA LATER THIS EVE.  AS A RESULT...SVR THREAT EXPECTED TO

SLOWLY INCREASE ACROSS THAT REGION AS SUCCESSIVE WAVES OF SLIGHTLY

ELEVATED STORMS APPROACH FROM AL.



AVIATION...TORNADOES AND 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 24040.





...CORFIDI

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