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Severe Thunderstorm Watch 8
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WW0008 Radar
Hazard Tornadoes EF2+ Tornadoes
Likelihood Low Low
Severe Wind 65 kt+ Wind
Moderate Low
Severe Hail 2"+ Hail
Low Very Low

Note:  The expiration time in the watch graphic is amended if the watch is replaced, cancelled or extended.
Note: Click for Watch Status Reports.
   SEL8

   URGENT - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH NUMBER 8
   NWS STORM PREDICTION CENTER NORMAN OK
   305 PM EST WED FEB 12 2014

   THE NWS STORM PREDICTION CENTER HAS ISSUED A

   * SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
     CENTRAL AND SOUTHERN FLORIDA
     COASTAL WATERS

   * EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 305 PM
     UNTIL 1100 PM EST.

   * PRIMARY THREATS INCLUDE...
     SEVERAL DAMAGING WIND GUSTS TO 70 MPH LIKELY
     A FEW TORNADOES POSSIBLE

   THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 80
   STATUTE MILES EAST AND WEST OF A LINE FROM 55 MILES EAST OF
   NAPLES FLORIDA TO 65 MILES NORTHWEST OF ORLANDO FLORIDA.  FOR A
   COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
   UPDATE (WOUS64 KWNS WOU8).

   PRECAUTIONARY/PREPAREDNESS ACTIONS...

   REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE
   FAVORABLE FOR 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. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY
   DO PRODUCE TORNADOES.

   &&

   DISCUSSION...LEAD SQLN NOW OVER THE FAR ERN GULF OF MEXICO EXPECTED
   TO CONTINUE E IN WRN FL THIS EVE AT 30-35 KTS. DIURNAL
   DESTABILIZATION AND CONTINUED LOW-LVL MOISTURE RETURN/DISSIPATION OF
   OLD S FL FRONTAL ZONE SHOULD ALLOW FOR SUFFICIENT LOW-LVL BUOYANCY
   OVER WRN FL TO POSE A RISK FOR DMGG WIND INTO TNGT GIVEN /1/
   EXPECTATION OF STRENGTHENING DEEP SHEAR /ASSOCIATED WITH SE QUADRANT
   OF AMPLIFYING LWR MS VLY UPR TROUGH/ AND /2/ EXISTING ORGANIZED
   NATURE OF CONVECTION. DMGG WIND AND ISOLD TORNADO THREATS WOULD BE
   GREATEST WITH EMBEDDED LEWP AND BOW STRUCTURES.
   FARTHER E...A SEPARATE SVR RISK MAY ARISE A BIT LATER THIS AFTN OR
   THIS EVE NEAR THE FL E CST...WHERE LOW-LVL CONVERGENCE WILL MAXIMIZE
   AS LOW-LVL WINDS SOMEWHAT VEER WITH THE CONTINUED EWD MOVEMENT OF
   UPR TROUGH. THE MORE DISCRETE NATURE OF ANY STORMS THAT FORM IN THIS
   REGION...AND LOW-LVL MOISTURE AXIS EXTENDING NWD FROM THE SE FL
   CST...SUGGEST THAT A SOMEWHAT GREATER CONDITIONAL TORNADO RISK MAY
   DEVELOP IN THIS AREA RELATIVE TO POINTS W. IF IT BECOMES APPARENT
   THAT THIS CONDITIONAL THREAT WILL BE GREATER THAN NOW
   EXPECTED...PARTS OF WW 8 MAY BE UPGRADED TO TORNADO LATER TODAY.

   AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
   TO 1 INCH. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60 KNOTS.
   A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM MOTION
   VECTOR 25035.


   ...CORFIDI
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Page last modified: February 13, 2014
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