WATCHES: Tornado Watch Number 82

WWUS20 KWNS 041621
SEL2
SPC WW 041621
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URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 82
NWS STORM PREDICTION CENTER NORMAN OK
1215 PM EDT THU APR 4 2013

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

CENTRAL AND SOUTHERN FLORIDA
COASTAL WATERS

EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 1215 PM UNTIL
800 PM EDT.

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 90 STATUTE
MILES EITHER SIDE OF A LINE FROM 35 MILES WEST SOUTHWEST OF FORT
MEYERS FLORIDA TO 35 MILES SOUTHEAST OF VERO BEACH FLORIDA. FOR
A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
OUTLINE UPDATE (WOUS64 KWNS WOU2).

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...TSTMS ASSOCIATED WITH E GULF OF MEXICO MCS EXPECTED TO
CONTINUE EWD INTO THE SRN HALF OF THE FL PENINSULA THROUGH THIS
AFTN. CURRENT WIND PROFILES OVER CNTRL/SRN FL...ALREADY SUFFICIENT
FOR SUSTAINED STORMS/SUPERCELLS...EXPECTED TO SOMEWHAT STRENGTHEN
WITH THE CONTINUED ESE ADVANCE OF ARKLATEX UPR TROUGH. AT THE SAME
TIME...OTHER STORMS MAY FORM ALONG AND S OF QSTNRY W-E OUTFLOW
BOUNDARY NOW EXTENDING FROM S OF TPA TO NEAR MLB. COMBINATION OF
STRENGTHENING SHEAR...MODERATE SFC HEATING...AND
MOISTURE-RICH...CONFLUENT LOW-LVL SLY FLOW S OF THE BOUNDARY/E OF
THE MCS SUGGEST POTENTIAL FOR A FEW LONGER-LIVED SUPERCELLS WITH A
RISK FOR TORNADOES...DMGG WIND....AND POSSIBLY SVR HAIL.

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 27030.


...CORFIDI

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