Tornado Watch 7

Issued

Jan 25, 2011, 2:07 PM EST (19:07 UTC)

Expired

Jan 25, 2011, 9:00 PM EST

In force

7 hr

Issued by

the Storm Prediction Center

Largest hail expected

0.5 in

Strongest gust expected

60 kt

The Tampa radar (KTBW), 88 km from the middle of the area, began a volume at 19:10 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

50%

One or more EF2 to EF5 tornadoes

20%

Ten or more severe wind reports

40%

One or more gusts of 65 knots or more

20%

Ten or more severe hail reports

5%

One or more hailstones of 2 inches or more

5%

Six or more combined severe hail and wind reports

80%

• Mesoscale Discussion 44Jan 25, 1:19 PM EST
• Mesoscale Discussion 45Jan 25, 7:20 PM EST

156 
WWUS20 KWNS 251909
SEL7
SPC WW 251909
FLZ000-CWZ000-260200-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 7
NWS STORM PREDICTION CENTER NORMAN OK
210 PM EST TUE JAN 25 2011

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

       MUCH OF THE FLORIDA PENINSULA
       COASTAL WATERS

EFFECTIVE THIS TUESDAY AFTERNOON AND EVENING FROM 210 PM UNTIL
900 PM EST.

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 APPROXIMATELY ALONG AND 85 STATUTE
MILES EAST AND WEST OF A LINE FROM 40 MILES SOUTH SOUTHWEST OF
AVON PARK FLORIDA TO 15 MILES NORTHWEST OF ST AUGUSTINE FLORIDA.
FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
OUTLINE UPDATE (WOUS64 KWNS WOU7).

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...SQUALL LINE NERN GULF WILL BE MOVING ONSHORE INTO AN
INCREASINGLY  FAVORABLE AIR MASS FOR SEVERE STORMS AND POSSIBLE
SUPERCELLS. MLCAPES HAVE CLIMBED TO AOA 500 J/KG ALONG WITH STEADILY
IMPROVING SHEAR PROFILES WITH APPROACH OF STRONG UPPER TROUGH AND
SURFACE LOW. IN ADDITION TO POTENTIAL SEVERE INCLUDING ISOLATED
TORNADOES WITH THE SQUALL LINE...MORE DISCRETE CONVECTION IS NOW
DEVELOPING IN  WCENTRAL FL AND WILL POTENTIALLY DEVELOP INTO LOW
TOPPED SUPERCELLS/POSSIBLE TORNADOES AS THEY TRACK NEWD ACROSS
CENTRAL AND NERN FL AHEAD OF THE SQUALL LINE THIS AFTERNOON.

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
450. MEAN STORM MOTION VECTOR 24035.


...HALES

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.