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WWUS20 KWNS 231818

SEL6

SPC WW 231818

ALZ000-FLZ000-MSZ000-240300-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 436

NWS STORM PREDICTION CENTER NORMAN OK

115 PM CDT TUE JUL 23 2013



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

  CENTRAL AND SOUTHERN ALABAMA

  WESTERN FLORIDA PANHANDLE

  CENTRAL AND SOUTHERN MISSISSIPPI



* EFFECTIVE THIS TUESDAY AFTERNOON AND EVENING FROM 115 PM UNTIL

  1000 PM CDT.



* PRIMARY THREATS INCLUDE...

  SEVERAL DAMAGING WIND GUSTS TO 70 MPH LIKELY

  SEVERAL LARGE HAIL EVENTS TO 1.5 INCHES IN DIAMETER POSSIBLE



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 70

STATUTE MILES NORTH AND SOUTH OF A LINE FROM 20 MILES SOUTHWEST

OF JACKSON MISSISSIPPI TO 45 MILES NORTHEAST OF DOTHAN ALABAMA.

FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH

OUTLINE UPDATE (WOUS64 KWNS WOU6).



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.



&&



OTHER WATCH INFORMATION...CONTINUE...WW 435...



DISCUSSION...INFLOW OF VERY MOIST AND MODERATELY UNSTABLE AIR IS

EXPECTED TO SUPPORT FURTHER INTENSIFICATION AND UPSCALE GROWTH OF

THE ONGOING MESOSCALE CONVECTIVE SYSTEM AS IT TRACKS SOUTHEASTWARD

AND SOUTHWARD...ROUGHLY ALONG A PRECEDING REMNANT OUTFLOW

BOUNDARY...INTO CENTRAL/EASTERN GULF COASTAL AREAS LATE THIS

AFTERNOON AND EVENING.



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 500. MEAN STORM

MOTION VECTOR 33035.





...KERR

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