Tornado Watch 749

Issued

Aug 13, 2004, 7:30 AM EDT (11:30 UTC)

Expired

Aug 13, 2004, 5:00 PM EDT

In force

10 hr

Issued by

the Storm Prediction Center

The Miami radar (KAMX), 141 km from the middle of the area, began a volume at 11:30 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

• Mesoscale Discussion 1986Aug 13, 6:46 AM EDT
• Mesoscale Discussion 1987Aug 13, 11:04 AM EDT
• Mesoscale Discussion 1989Aug 13, 1:02 PM EDT
• Mesoscale Discussion 1992Aug 13, 4:06 PM EDT

000 
WWUS20 KWNS 131132
SEL9  
SPC WW 131130
FLZ000-CWZ000-132100-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 749
NWS STORM PREDICTION CENTER NORMAN OK
730 AM EDT FRI AUG 13 2004

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

       CENTRAL AND SOUTHERN FLORIDA
       COASTAL WATERS

EFFECTIVE THIS FRIDAY MORNING AND AFTERNOON FROM 730 AM UNTIL 500
PM EDT.

TORNADOES...HAIL TO 0.5 INCH IN DIAMETER...THUNDERSTORM WIND GUSTS
TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.

THE TORNADO WATCH AREA IS ALONG AND 70 STATUTE MILES EAST AND WEST
OF A LINE FROM 55 MILES EAST OF KEY WEST FLORIDA TO 40 MILES NORTH
NORTHWEST OF AVON PARK 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 748. WATCH NUMBER 748 WILL NOT BE IN EFFECT AFTER 730
AM EDT. 

DISCUSSION...HURRICANE CHARLEY CONTINUES TO LIFT NWD AT AROUND 17 KT
AND SHOULD BE LOCATED OFF THE W-CENTRAL FL COAST LATER TODAY.  THIS
TRACK WILL SUPPORT ENHANCED LOW LEVEL SHEAR ACROSS SRN AND INTO
CENTRAL FL THROUGH THE DAY...AS 50+ KT SLY FLOW JUST OFF THE SURFACE
OVERSPREADS SELY SURFACE WINDS.  DIURNAL HEATING WILL ALLOW
THUNDERSTORMS TO INCREASE ACROSS WW WITH A HEIGHTENED THREAT OF
TORNADOES.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 0.5 INCH. EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550.
MEAN STORM MOTION VECTOR 17030.


...EVANS

243,0820 281,0824 281,0802 243,0794

Tornado Watches in Florida, 2004Every tornado watch in 2004

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; radar from the NEXRAD Level II archive.