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WWUS20 KWNS 241908

SEL5

SPC WW 241908

ALZ000-MSZ000-250200-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 535

NWS STORM PREDICTION CENTER NORMAN OK

205 PM CDT TUE SEP 24 2013



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

  SOUTHWEST ALABAMA

  SOUTHERN MISSISSIPPI



* EFFECTIVE THIS TUESDAY AFTERNOON AND EVENING FROM 205 PM UNTIL

  900 PM CDT.



* PRIMARY THREATS INCLUDE...

  SEVERAL DAMAGING WIND GUSTS TO 70 MPH POSSIBLE



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 80

STATUTE MILES EAST AND WEST OF A LINE FROM 30 MILES WEST

NORTHWEST OF SELMA ALABAMA TO 60 MILES EAST SOUTHEAST OF PINE

BELT MISSISSIPPI.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU5).



PRECAUTIONARY/PREPAREDNESS ACTIONS...



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.



&&



DISCUSSION...SW-NE SQLN IN S CNTRL/SE MS EXPECTED TO CONTINUE MAINLY

EWD. STORM DEVELOPMENT WILL BE SUPPORTED BY UPLIFT ALONG EXISTING

COLD POOL ...WHERE CONVERGENCE WILL BE MAXIMIZED BETWEEN

DOWNWARD-TRANSPORTED 30-35 KT WLY POST-SQLN FLOW AND SE LOW-LVL

WINDS AHEAD OF THE LINE. VERY MOIST LOW-LVL ENVIRONMENT...CONTINUED

SFC HEATING AHEAD OF THE LINE...AND CONFLUENCE ALONG DIFFUSE WARM

FRONT TO ITS EAST SUGGEST POTENTIAL FOR EMBEDDED LOW AMPLITUDE

BOWS/LEWPS WITH LOCALLY DMGG WIND AND POSSIBLY A TORNADO.



AVIATION...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 500. MEAN STORM MOTION

VECTOR 26030.





...CORFIDI

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