Tornado Watch 79

Issued

Mar 30, 2011, 11:10 AM EDT (15:10 UTC)

Expired

Mar 30, 2011, 6:45 PM EDT

In force

8 hr

Issued by

the Storm Prediction Center

Largest hail expected

2 in

Strongest gust expected

70 kt

The Tallahassee radar (KTLH), 138 km from the middle of the area, began a volume at 15:14 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.

Two or more tornadoes

40%

One or more EF2 to EF5 tornadoes

20%

Ten or more severe wind reports

50%

One or more gusts of 65 knots or more

30%

Ten or more severe hail reports

40%

One or more hailstones of 2 inches or more

30%

Six or more combined severe hail and wind reports

70%

• Mesoscale Discussion 317Mar 30, 8:28 AM EDT
• Mesoscale Discussion 318Mar 30, 3:32 PM EDT
• Mesoscale Discussion 319Mar 30, 4:41 PM EDT

967 
WWUS20 KWNS 301512
SEL9
SPC WW 301512
FLZ000-CWZ000-310000-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 79
NWS STORM PREDICTION CENTER NORMAN OK
1110 AM EDT WED MAR 30 2011

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

       NORTHERN AND CENTRAL FLORIDA
       COASTAL WATERS

EFFECTIVE THIS WEDNESDAY MORNING AND EVENING FROM 1110 AM UNTIL
800 PM EDT.

TORNADOES...HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND
GUSTS TO 80 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE
AREAS.

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 90 STATUTE
MILES NORTH AND SOUTH OF A LINE FROM 70 MILES SOUTH SOUTHWEST OF
TALLAHASSEE FLORIDA TO 10 MILES EAST SOUTHEAST OF DAYTONA BEACH
FLORIDA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU9).

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...A WELL-ORGANIZED QUASI-LINEAR CONVECTIVE COMPLEX...WITH
EMBEDDED BOWS...IS EXPECTED TO MOVE INLAND THIS AFTERNOON FROM THE
NORTHEAST GULF OF MEXICO INTO THE NORTHERN/CENTRAL PORTIONS OF FL.
ADDITIONAL QLCS-LEADING SEMI-DISCRETE SUPERCELLS WILL BE POSSIBLE
WITHIN A WEAKLY CAPPED AND MOIST /NEAR 70F SURFACE DEWPOINTS/
AIRMASS. RELATIVELY STRONG/VEERING WIND PROFILES WILL SUPPORT BOTH
BOWING SEGMENTS/EMBEDDED SUPERCELLS CAPABLE OF DAMAGING WINDS AND A
FEW TORNADOES.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
500. MEAN STORM MOTION VECTOR 26040.


...GUYER/THOMPSON

Tornado Watches in Florida, 2011Every tornado watch in 2011

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.