Tornado Watch 427

Issued

Jun 25, 2012, 1:48 PM EDT (17:48 UTC)

Expired

Jun 25, 2012, 11:00 PM EDT

In force

9 hr

Issued by

the Storm Prediction Center

Strongest gust expected

60 kt

The Tampa radar (KTBW), 52 km from the middle of the area, began a volume at 17:49 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

10%

Ten or more severe wind reports

30%

One or more gusts of 65 knots or more

10%

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

30%

• Mesoscale Discussion 1271Jun 25, 12:06 PM EDT
• Mesoscale Discussion 1277Jun 25, 6:27 PM EDT
• Mesoscale Discussion 1281Jun 25, 9:35 PM EDT

272 
WWUS20 KWNS 251752
SEL7
SPC WW 251752
FLZ000-CWZ000-260300-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 427
NWS STORM PREDICTION CENTER NORMAN OK
150 PM EDT MON JUN 25 2012

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

       A LARGE PART OF FLORIDA
       COASTAL WATERS

EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 150 PM UNTIL
1100 PM EDT.

TORNADOES...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 EAST AND WEST OF A LINE FROM 50 MILES SOUTHWEST OF WEST
PALM BEACH FLORIDA TO 60 MILES NORTH OF CROSS CITY 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.

OTHER WATCH INFORMATION...THIS TORNADO WATCH REPLACES TORNADO
WATCH NUMBER 424. WATCH NUMBER 424 WILL NOT BE IN EFFECT AFTER
150 PM EDT. CONTINUE...WW 425...WW 426...

DISCUSSION...LOW LEVEL WIND SHEAR/SRH EAST OF TS DEBBY REMAIN
FAVORABLE FOR ROTATING UPDRAFTS BASED ON VAD WIND PROFILES FROM AREA
RADARS...AND RADAR HAS SHOWN A FEW SMALL ROTATION
COUPLETS.ESPECIALLY EAST OF TLH...NE OF TPA...AND NE OF LAKE
OKEECHOBEE DURING THE LAST HOUR.  ALTHOUGH LITTLE CG LIGHTNING IS
INDICATED ATTM...POTENTIAL EXISTS FOR SMALL SUPERCELLS TO DEVELOP AS
ADDITIONAL CONVECTIVE BANDS ROTATE ONSHORE FROM THE ERN GULF.

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 19035.


...WEISS

Tornado Watches in Florida, 2012Every tornado watch in 2012

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.