WATCHES: Tornado Watch Number 186

WWUS20 KWNS 220307
SEL6
SPC WW 220307
FLZ000-CWZ000-221100-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 186
NWS STORM PREDICTION CENTER NORMAN OK
1110 PM EDT SAT APR 21 2012

THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF

CENTRAL AND SOUTHERN FLORIDA PENINSULA
COASTAL WATERS

EFFECTIVE THIS SATURDAY NIGHT AND SUNDAY MORNING FROM 1110 PM
UNTIL 700 AM EDT.

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 70 MILES NORTHEAST OF SAINT
PETERSBURG FLORIDA TO 60 MILES SOUTH SOUTHWEST OF MIAMI FLORIDA.
FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
OUTLINE UPDATE (WOUS64 KWNS WOU6).

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.

DISCUSSION...SCATTERED THUNDERSTORMS ARE INCREASING OFF THE WEST
COAST OF CENTRAL/SOUTH FL. THESE STORMS ARE ASSOCIATED WITH A
STRONG UPPER TROUGH APPROACHING THE REGION. COOLING TEMPERATURES
ALOFT AND STRENGTHENING WIND FIELDS WILL PROMOTE A RISK OF STRONG TO
SEVERE THUNDERSTORMS OVERNIGHT ACROSS THE WATCH AREA. DAMAGING
WINDS ARE THE MAIN THREAT...BUT A FEW SUPERCELLS CAPABLE OF
TORNADOES ARE POSSIBLE.

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 500.
MEAN STORM MOTION VECTOR 26025.


...HART

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