

000 

WWUS20 KWNS 080647

SEL7

SPC WW 080647

FLZ000-CWZ000-081200-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 107

NWS STORM PREDICTION CENTER NORMAN OK

145 AM EST SAT MAR 8 2008



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       EAST CENTRAL INTO SOUTHERN FLORIDA

       COASTAL WATERS



EFFECTIVE THIS SATURDAY MORNING FROM 145 AM UNTIL 700 AM EST.



TORNADOES...HAIL TO 1.5 INCHES 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 EAST AND WEST OF A LINE FROM 25 MILES EAST OF MELBOURNE

FLORIDA TO 70 MILES SOUTHWEST OF WEST PALM BEACH 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...THIS TORNADO WATCH REPLACES TORNADO

WATCH NUMBER 106. WATCH NUMBER 106 WILL NOT BE IN EFFECT AFTER

145 AM EST.



DISCUSSION...THE POTENTIAL FOR BRIEF TORNADOES/DAMAGING WINDS WILL

PERSIST AS BROKEN LINE OF STORMS SPREADS SLOWLY EWD ACROSS WW

OVERNIGHT...GIVEN  MODERATE INSTABILITY AND SHEAR ALREADY IN PLACE.



AVIATION...TORNADOES AND 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

450. MEAN STORM MOTION VECTOR 23030.





...EVANS

