Tornado Watch 742

Issued

Sep 17, 2000, 11:00 AM EDT (15:00 UTC)

Expired

Sep 17, 2000, 8:00 PM EDT

In force

9 hr

Issued by

the Storm Prediction Center

995 
WWUS9 KMKC 171445
SEL2  

SEL2  
MKC WW 171438
FLZ000-CWZ000-180000-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 742
STORM PREDICTION CENTER NORMAN OK
1038 AM EDT SUN SEP 17 2000

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

   THE FLORIDA PENINSULA                            
   COASTAL WATERS                     

EFFECTIVE THIS SUNDAY MORNING AND EVENING FROM 1100 AM UNTIL 800 PM
EDT.

TORNADOES...THUNDERSTORM WIND GUSTS TO 70 MPH...AND DANGEROUS
LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE TORNADO WATCH AREA IS ALONG AND 70 STATUTE MILES EITHER SIDE OF
A LINE FROM 40 MILES NORTH OF GAINESVILLE FLORIDA TO 70 MILES
SOUTHWEST OF WEST PALM BEACH FLORIDA.

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...THIS TORNADO WATCH REPLACES TORNADO WATCH
NUMBER 740...TORNADO WATCH NUMBER 741.  WATCH NUMBER 740...741 WILL
NOT BE IN EFFECT AFTER 1100 AM EDT.

DISCUSSION...CONVECTION ASSOCIATED WITH HURRICANE GORDON IS
SPREADING NWD OVER MUCH OF THE FL PENINSULA AS GORDON MOVES NNEWD. 
VAD WIND PROFILES AT TBW AND MLB INDICATE VERY STRONG LOW LEVEL
SHEAR AND HELICITY SUPPORTIVE OF SMALL TORNADIC SUPERCELLS.  THREAT
IS EXPECTED TO SHIFT NWD DURING THE AFTERNOON AS STRONGEST LOW
LEVEL SHEAR MOVES ACROSS CENTRAL INTO NRN FL. 


AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH EXTREME
TURBULENCE AND SURFACE WIND GUSTS TO 60 KNOTS.  A FEW CUMULONIMBI
WITH MAXIMUM TOPS TO 500.  MEAN STORM MOTION VECTOR 18035.


...WEISS

253,0815 295,0832 303,0810 261,0794

Tornado Watches in Florida, 2000Every tornado watch in 2000

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive.