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276 

WWUS20 KWNS 121848

SEL3

SPC WW 121848

FLZ000-CWZ000-130200-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 33

NWS STORM PREDICTION CENTER NORMAN OK

150 PM EST FRI MAR 12 2010



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       SOUTHEAST FLORIDA

       COASTAL WATERS



EFFECTIVE THIS FRIDAY AFTERNOON AND EVENING FROM 150 PM UNTIL 900

PM 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 NORTH AND SOUTH OF A LINE FROM 65 MILES WEST OF MIAMI

FLORIDA TO 20 MILES EAST OF MIAMI FLORIDA.  FOR A COMPLETE

DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE

(WOUS64 KWNS WOU3).



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 32...



DISCUSSION...ORGANIZED LINE OF STORMS WILL CONTINUE TO SURGE SEWD

ALONG INTERSECTION WITH PRE-EXISTING OUTFLOW BOUNDARY.  ENHANCED

LOW-LEVEL SHEAR ON THE IMMEDIATE COOL SIDE OF THE BOUNDARY WILL

SUPPORT A THREAT FOR ROTATING STORMS IN THE LINE...ALONG WITH THE

LIKELIHOOD OF DAMAGING WINDS FOR THE NEXT COUPLE OF HOURS.



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

500. MEAN STORM MOTION VECTOR 29035.





...THOMPSON

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