Tornado Watch 82

Issued

Apr 4, 2013, 12:14 PM EDT (16:14 UTC)

Expired

Apr 4, 2013, 8:00 PM EDT

In force

8 hr

Issued by

the Storm Prediction Center

Largest hail expected

1.5 in

Strongest gust expected

60 kt

The Tampa radar (KTBW), 116 km from the middle of the area, began a volume at 16:18 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

30%

Ten or more severe wind reports

90%

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

20%

Six or more combined severe hail and wind reports

95%

• Mesoscale Discussion 385Apr 4, 10:08 AM EDT
• Mesoscale Discussion 386Apr 4, 2:23 PM EDT
• Mesoscale Discussion 388Apr 4, 7:37 PM EDT

134 
WWUS20 KWNS 041621
SEL2  
SPC WW 041621
FLZ000-CWZ000-050000-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 82
NWS STORM PREDICTION CENTER NORMAN OK
1215 PM EDT THU APR 4 2013

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

       CENTRAL AND SOUTHERN FLORIDA
       COASTAL WATERS

EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 1215 PM UNTIL
800 PM EDT.

TORNADOES...HAIL TO 1.5 INCHES IN DIAMETER...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 EITHER SIDE OF A LINE FROM 35 MILES WEST SOUTHWEST OF FORT
MEYERS FLORIDA TO 35 MILES SOUTHEAST OF VERO BEACH FLORIDA.  FOR
A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
OUTLINE UPDATE (WOUS64 KWNS WOU2).

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...TSTMS ASSOCIATED WITH E GULF OF MEXICO MCS EXPECTED TO
CONTINUE EWD INTO THE SRN HALF OF THE FL PENINSULA THROUGH THIS
AFTN. CURRENT WIND PROFILES OVER CNTRL/SRN FL...ALREADY SUFFICIENT
FOR SUSTAINED STORMS/SUPERCELLS...EXPECTED TO SOMEWHAT STRENGTHEN
WITH THE CONTINUED ESE ADVANCE OF ARKLATEX UPR TROUGH. AT THE SAME
TIME...OTHER STORMS MAY FORM ALONG AND S OF QSTNRY W-E OUTFLOW
BOUNDARY NOW EXTENDING FROM S OF TPA TO NEAR MLB. COMBINATION OF
STRENGTHENING SHEAR...MODERATE SFC HEATING...AND
MOISTURE-RICH...CONFLUENT LOW-LVL SLY FLOW S OF THE BOUNDARY/E OF
THE MCS SUGGEST POTENTIAL FOR A FEW LONGER-LIVED SUPERCELLS WITH A
RISK FOR TORNADOES...DMGG WIND....AND POSSIBLY SVR HAIL.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
500. MEAN STORM MOTION VECTOR 27030.


...CORFIDI

Tornado Watches in Florida, 2013Every tornado watch in 2013

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.