

000 

WWUS20 KWNS 180800

SEL7

SPC WW 180800

FLZ000-GAZ000-CWZ000-181500-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 67

NWS STORM PREDICTION CENTER NORMAN OK

300 AM EST MON FEB 18 2008



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       EASTERN FLORIDA PANHANDLE AND NORTH FLORIDA

       SOUTH CENTRAL AND SOUTHEAST GEORGIA

       COASTAL WATERS



EFFECTIVE THIS MONDAY MORNING FROM 300 AM UNTIL 1000 AM 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 70 STATUTE

MILES EAST AND WEST OF A LINE FROM 30 MILES NORTH OF WAYCROSS

GEORGIA TO 35 MILES EAST SOUTHEAST OF APALACHICOLA FLORIDA.  FOR

A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH

OUTLINE UPDATE (WOUS64 KWNS WOU7).



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 66...



DISCUSSION...SRN END OF LONG-LIVED BROKEN SQLN IN GA/NW FL EXPECTED

TO CONTINUE TO CONTAIN OCCASIONAL EMBEDDED SUPERCELLS/SUSTAINED

STORMS THAT...GIVEN STRENGTH OF LOW TO MID-LEVEL SHEAR...WILL POSE

ADDITIONAL RISK FOR ISOLATED DAMAGING WIND GUSTS/POSSIBLE TORNADOES.

 WHILE LOW-LEVEL MOISTURE INFLOW SHOULD BE MORE LIMITED WITH ERN/NRN

EXTENT IN WATCH...SOME DESTABILIZATION MAY BE PROVIDED BY

ASCENT/COOLING ALOFT ASSOCIATED WITH PROGRESSIVE LARGE SCALE UPR

TROUGH.



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 24035.





...CORFIDI

