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WWUS20 KWNS 051048

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ALZ000-FLZ000-GAZ000-MSZ000-CWZ000-052100-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 838

NWS STORM PREDICTION CENTER NORMAN OK

540 AM CDT MON SEP 5 2011



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       MUCH OF ALABAMA

       THE FLORIDA PANHANDLE

       SOUTHWEST GEORGIA

       EASTERN MISSISSIPPI

       COASTAL WATERS



EFFECTIVE THIS MONDAY MORNING AND AFTERNOON FROM 540 AM UNTIL 400

PM CDT.



TORNADOES...HAIL TO 0.5 INCH IN DIAMETER...THUNDERSTORM WIND

GUSTS TO 75 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE

AREAS.



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 130 STATUTE

MILES EAST AND WEST OF A LINE FROM 35 MILES NORTH OF TUSCALOOSA

ALABAMA TO 40 MILES SOUTHWEST OF PANAMA CITY FLORIDA.  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 837. WATCH NUMBER 837 WILL NOT BE IN EFFECT AFTER

540 AM CDT.



DISCUSSION...BANDS AND SMALL CLUSTERS OF SHOWERS/TSTMS WITH THE

POTENTIAL FOR TORNADOES EXPECTED TO PERSIST THROUGH THIS AFTN OVER

PARTS OF THE SERN STATES...IN ERN QUADRANT OF HYBRID T.D. LEE.

SATELLITE AND SFC OBS SUGGEST THAT LEE WILL CONTINUE TO UNDERGO

EXTRATROPICAL TRANSITION.  THIS SHOULD RESULT IN STRENGTHENING AND

PERHAPS BROADENING OF SSWLY LLJ EXTENDING FROM THE NERN GULF OF

MEXICO INTO AL AND THE WRN FL PANHANDLE BY MIDDAY...WITH SPEEDS AOA

50 KTS.  AT THE SAME TIME...A BELT OF STRENGTHENING 700-500 MB FLOW

WILL OVERSPREAD REGION AS UPR CIRCULATION OF LEE ELONGATES ENEWD.

COUPLED WITH SFC HEATING AND LOW LVL UPLIFT ALONG NWD MOVING CSTL

BOUNDARY...SETUP MAY YIELD INCREASING NUMBERS OF SUPERCELLS RELATIVE

TO THE PAST TWO DAYS...ESPECIALLY OVER SRN/CNTRL AL AND PERHAPS THE

WRN FL PANHANDLE/SW GA.  OTHER STORMS /INCLUDING TRAINING CELLS AND

LEWPS/ CAPABLE OF ISOLD TORNADOES AND DMGG WIND MAY EVOLVE ALONG

DEVELOPING STNRY FRONT EXTENDING ENE FROM THE CENTER OF LEE INTO NRN

AL/NW GA.



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

SURFACE AND ALOFT TO 0.5 INCH. EXTREME TURBULENCE AND SURFACE

WIND GUSTS TO 65 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO

500. MEAN STORM MOTION VECTOR 19040.





...CORFIDI

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