

917 

WWUS20 KWNS 211327

SEL5

SPC WW 211327

FLZ000-GAZ000-CWZ000-212100-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 5

NWS STORM PREDICTION CENTER NORMAN OK

825 AM EST THU JAN 21 2010



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       THE EASTERN FLORIDA PANHANDLE AND NORTHERN FLORIDA

       SOUTHERN GEORGIA

       COASTAL WATERS



EFFECTIVE THIS THURSDAY MORNING AND AFTERNOON FROM 825 AM UNTIL

400 PM EST.



TORNADOES...HAIL TO 1 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 50 STATUTE

MILES NORTH AND SOUTH OF A LINE FROM 25 MILES NORTHEAST OF

JACKSONVILLE FLORIDA TO 25 MILES SOUTH SOUTHWEST OF PANAMA CITY

FLORIDA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU5).



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...CONTINUE...WW 4...



DISCUSSION...SCTD SUSTAINED STORMS AND A FEW SUPERCELLS EXPECTED TO

PERSIST ALONG WSW-ENE ORIENTED CONFLUENCE ZONE EXTENDING FROM THE

NERN GULF OF MEXICO INTO S GA LATER TODAY.  AS BOUNDARY LAYER

CONTINUES TO SLOWLY DESTABILIZE ON SRN SIDE OF SYSTEM...AND AS

REGION COMES INCREASINGLY UNDER THE INFLUENCE OF EXIT REGION OF 100+

KT WLY HI LVL JET...POTENTIAL MAY INCREASE FOR EMBEDDED LEWPS/SMALL

BOWS WITH DMGG WIND AND ISOLD TORNADOES.



AVIATION...TORNADOES AND 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 450.

MEAN STORM MOTION VECTOR 25040.





...CORFIDI

