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052 

WWUS20 KWNS 251620

SEL4

SPC WW 251620

FLZ000-CWZ000-260000-



URGENT - IMMEDIATE BROADCAST REQUESTED

TORNADO WATCH NUMBER 104

NWS STORM PREDICTION CENTER NORMAN OK

1220 PM EDT SUN APR 25 2010



THE NWS STORM PREDICTION CENTER HAS ISSUED A

TORNADO WATCH FOR PORTIONS OF



       NORTHERN FLORIDA

       COASTAL WATERS



EFFECTIVE THIS SUNDAY AFTERNOON AND EVENING FROM 1220 PM UNTIL

800 PM EDT.



TORNADOES...HAIL TO 1.5 INCHES IN DIAMETER...THUNDERSTORM WIND

GUSTS TO 75 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE

AREAS.



THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 50 STATUTE

MILES EITHER SIDE OF A LINE FROM 55 MILES SOUTH SOUTHWEST OF

CROSS CITY FLORIDA TO 25 MILES NORTH NORTHEAST OF DAYTONA BEACH

FLORIDA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU4).



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 103...



DISCUSSION...BAND OF STORMS CONTINUES TO INTENSIFY FROM COASTAL NW

FL WWD INTO THE ERN GULF OF MEXICO.  AIR MASS AHEAD OF THE STORMS

HAS BECOME UNSTABLE AND MLCAPES SHOULD APPROACH 1500-2000 J/KG THIS

AFTN AHEAD OF THE STORMS.  REGION WILL RESIDE ALONG SRN PERIPHERY OF

50 KTS OF WLY MID-LVL FLOW AND SUPERCELLS WILL REMAIN POSSIBLE WITH

LARGE HAIL.  ADDITIONALLY...SUFFICIENT LOW-LEVEL SRH AND PRESENCE OF

A MOIST BOUNDARY LAYER WILL EXIST FOR THE RISK OF TORNADOES.



AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL

SURFACE AND ALOFT TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE

WIND GUSTS TO 65 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO

500. MEAN STORM MOTION VECTOR 25035.





...RACY/HALES

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