

000 

WWUS20 KWNS 130808

SEL4

SPC WW 130808

ALZ000-FLZ000-GAZ000-CWZ000-131600-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 824

NWS STORM PREDICTION CENTER NORMAN OK

405 AM EDT WED AUG 13 2008



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       EASTERN ALABAMA

       THE FLORIDA PANHANDLE AND NORTHERN FLORIDA

       SOUTHERN AND CENTRAL GEORGIA

       COASTAL WATERS



EFFECTIVE THIS WEDNESDAY MORNING FROM 405 AM UNTIL NOON EDT.



TORNADOES...HAIL TO 0.5 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 110 STATUTE

MILES EAST AND WEST OF A LINE FROM 40 MILES SOUTHEAST OF

APALACHICOLA FLORIDA TO 30 MILES WEST NORTHWEST OF MACON GEORGIA.

 FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH

OUTLINE UPDATE (WOUS64 KWNS WOU4).



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.



DISCUSSION...WV AND VWP DATA SHOW ANOMALOUS SRN STREAM SHORTWAVE

TROUGH AMPLIFYING OVER WRN AL ATTM.  TROUGH SHOULD CONTINUE E TO THE

SAVANNAH RVR VLY BY MIDDAY AS ASSOCIATED 850 MB LOW REACHES AGS.

COMBINATION OF STRENGTHENING WIND FIELD WITH RICH MOISTURE INFLOW

SUGGESTS POTENTIAL FOR LOW LVL STORM ROTATION/ISOLD TORNADOES.  THIS

THREAT MAY BE GREATEST ALONG TWO CORRIDORS: /1/ OVER THE FL

PANHANDLE...AS EXISTING SQLN ENCOUNTERS UNDISTURBED WSWLY LOW LVL

FLOW...AND /2/ FROM NEAR MGM THROUGH CSG TO MCN...WHERE LOW LVL

SHEAR/ASCENT MAY MAXIMIZE ALONG TRACK OF SFC AND 850 MB LOWS.



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

SURFACE AND ALOFT TO 0.5 INCH. EXTREME TURBULENCE AND SURFACE

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

450. MEAN STORM MOTION VECTOR 27035.





...CORFIDI

