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906 

WWUS20 KWNS 281629

SEL5

SPC WW 281629

ALZ000-FLZ000-GAZ000-MSZ000-CWZ000-290100-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 385

NWS STORM PREDICTION CENTER NORMAN OK

1130 AM CDT FRI JUN 28 2013



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

  CENTRAL AND SOUTHERN ALABAMA

  WESTERN FLORIDA PANHANDLE

  WEST-CENTRAL AND SOUTHWEST GEORGIA

  EAST-CENTRAL AND SOUTHEAST MISSISSIPPI

  COASTAL WATERS



* EFFECTIVE THIS FRIDAY MORNING AND EVENING FROM 1130 AM UNTIL

  800 PM CDT.



* PRIMARY THREATS INCLUDE...

  NUMEROUS DAMAGING WIND GUSTS TO 70 MPH LIKELY



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 80

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 45 MILES SOUTH

SOUTHWEST OF MERIDIAN MISSISSIPPI TO 50 MILES SOUTHEAST OF

COLUMBUS GEORGIA.  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...TSTMS ARE RAPIDLY DEVELOPING OVER CNTRL AL ALONG THE

LEADING EDGE OF A COLD POOL ASSOCIATED WITH A DECAYING MCS OVER NRN

MS.  THE AIR MASS ACROSS THE WATCH AREA IS VERY MOIST WITH MLCAPE

VALUES OF 3000-4000 J/KG.  WHEN COUPLED WITH A SLIGHT ENHANCEMENT OF

NWLY MIDLEVEL FLOW /PER UPSTREAM VAD OBSERVATIONS/ THE SETUP APPEARS

FAVORABLE FOR THE DEVELOPMENT OF A BOWING MCS CAPABLE OF CORRIDORS

OF WIND DAMAGE.



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 600. MEAN STORM

MOTION VECTOR 30030.





...MEAD

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