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000 

WWUS20 KWNS 061754

SEL4

SPC WW 061754

FLZ000-CWZ000-070000-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 244

NWS STORM PREDICTION CENTER NORMAN OK

150 PM EDT SUN MAY 6 2007



THE NWS STORM PREDICTION CENTER HAS ISSUED A

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF



       FLORIDA PENINSULA

       COASTAL WATERS



EFFECTIVE THIS SUNDAY AFTERNOON AND EVENING FROM 150 PM UNTIL 800

PM EDT.



HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70

MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 65

STATUTE MILES EAST AND WEST OF A LINE FROM 25 MILES NORTH OF

OCALA FLORIDA TO 65 MILES SOUTH SOUTHWEST OF WEST PALM BEACH

FLORIDA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU4).



REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE

FAVORABLE FOR 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. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY

DO PRODUCE TORNADOES.



OTHER WATCH INFORMATION...CONTINUE...WW 243...



DISCUSSION...INITIATION OF THUNDERSTORMS IS UNDERWAY IN MODERATELY

UNSTABLE ENVIRONMENT WITH SUFFICIENT SHEAR FOR AT LEAST SHORT-LIVED

SUPERCELLS.  RISK...PRIMARILY...FOR LARGE HAIL/DAMAGING WINDS WILL

INCREASE THROUGH THE AFTERNOON AS LARGE-SCALE ASCENT ASSOCIATED WITH

WEAK UPPER TROUGH PROMOTES INCREASING COVERAGE OF STORMS SOUTHWARD

THROUGH THE CENTRAL/SOUTHERN FLORIDA PENINSULA.



AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT

TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60

KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM

MOTION VECTOR 36025.





...KERR/HALES

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