

091 

WWUS20 KWNS 130741

SEL8

SPC WW 130741

ALZ000-FLZ000-GAZ000-MSZ000-CWZ000-131500-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 148

NWS STORM PREDICTION CENTER NORMAN OK

230 AM CDT MON APR 13 2009



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       SOUTHERN AND EASTERN ALABAMA

       THE WESTERN FLORIDA PANHANDLE

       WEST CENTRAL GEORGIA

       SOUTHEAST MISSISSIPPI

       COASTAL WATERS



EFFECTIVE THIS MONDAY MORNING FROM 230 AM UNTIL 1000 AM CDT.



TORNADOES...HAIL TO 1 INCH IN DIAMETER...THUNDERSTORM WIND GUSTS

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



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 95 STATUTE

MILES EAST AND WEST OF A LINE FROM 30 MILES SOUTH OF MOBILE

ALABAMA TO 30 MILES NORTH NORTHEAST OF TROY ALABAMA.  FOR A

COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE

UPDATE (WOUS64 KWNS WOU8).



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...THIS TORNADO WATCH REPLACES TORNADO

WATCH NUMBER 146...TORNADO WATCH NUMBER 147. WATCH NUMBER 146 147

WILL NOT BE IN EFFECT AFTER 230 AM CDT.



DISCUSSION...LEWP-CONTAINING SQLN EXPECTED TO EDGE SLOWLY E THROUGH

MID MORNING...DRIVEN LARGELY BY VEERED LOW LVL FLOW ACROSS LA/WRN

MS.  INCREASINGLY MOIST LOW LVL FLOW AHEAD OF LINE...PERSISTENCE OF

STRONG/DEEP-VEERING WIND FIELD...AND SELY COMPONENT TO NEAR-SFC FLOW

SUGGEST CONTINUED POTENTIAL FOR ADDITIONAL LEWPS/EMBEDDED SUPERCELLS

WITH AN ASSOCIATED THREAT FOR ISOLD TORNADOES.  SHALLOWER CONVECTION

IN CONFLUENT LOW LVL FLOW AHEAD OF SQLN MAY ALSO PRODUCE A BRIEF

TORNADO OR TWO LATER THIS MORNING.



AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL

SURFACE AND ALOFT TO 1 INCH. EXTREME TURBULENCE AND SURFACE WIND

GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 450.

MEAN STORM MOTION VECTOR 24040.





...CORFIDI

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