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Tornado Watch 30
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WW0030 Radar
Note:  The expiration time in the watch graphic is amended if the watch is replaced, cancelled or extended.
Note: Click for Watch Status Reports.
   SEL0
   
   URGENT - IMMEDIATE BROADCAST REQUESTED
   TORNADO WATCH NUMBER 30
   NWS STORM PREDICTION CENTER NORMAN OK
   155 AM EST THU FEB 19 2009
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   TORNADO WATCH FOR PORTIONS OF 
   
          NORTHERN FLORIDA AND THE FLORIDA PANHANDLE
          SOUTH GEORGIA
          COASTAL WATERS
   
   EFFECTIVE THIS THURSDAY MORNING FROM 155 AM UNTIL 900 AM EST.
   
   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 145 STATUTE
   MILES EAST AND WEST OF A LINE FROM 35 MILES EAST NORTHEAST OF
   WAYCROSS GEORGIA TO 5 MILES WEST SOUTHWEST OF APALACHICOLA
   FLORIDA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
   ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU0).
   
   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 SEVERE
   THUNDERSTORM WATCH NUMBER 29. WATCH NUMBER 29 WILL NOT BE IN
   EFFECT AFTER 155 AM EST. CONTINUE...WW 26...WW 27...WW 28...
   
   DISCUSSION...SUSTAINED STORMS/SUPERCELLS EXPECTED TO PERSIST THROUGH
   AT LEAST 12Z ALONG LOOSELY-ORGANIZED PRE-FRONTAL CONFLUENCE AXIS
   EXTENDING WSW FROM NEAR VAD.  ABSENCE OF STRONG LINEAR
   FORCING...LONG RESIDENCE TIMES OF STORMS IN SATELLITE-DERIVED PW
   AXIS...VERY STRONG/SLIGHTLY CURVED WIND PROFILES...AND EXPECTED
   STRENGTHENING OF WIND FIELD/ LARGE SCALE ASCENT WITH CONTINUED
   AMPLIFICATION OF LARGER SCALE TROUGH SUGGEST POTENTIAL FOR
   SEMI-DISCRETE SVR STORMS AND ISOLD STRONG TORNADOES.
   
   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
   450. MEAN STORM MOTION VECTOR 27045.
   
   
   ...CORFIDI
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Page last modified: February 19, 2009
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