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Severe Thunderstorm Watch 493
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WW0493 Radar
Hazard Tornadoes EF2+ Tornadoes
Likelihood Low Very Low
Severe Wind 65 kt+ Wind
Moderate Moderate
Severe Hail 2"+ Hail
Low 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.
   SEL3
   
   URGENT - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH NUMBER 493
   NWS STORM PREDICTION CENTER NORMAN OK
   710 PM EDT MON JUN 22 2009
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
   
          NORTHERN AND CENTRAL FLORIDA
   
   EFFECTIVE THIS MONDAY NIGHT AND TUESDAY MORNING FROM 710 PM UNTIL
   100 AM EDT.
   
   HAIL TO 2 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70
   MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
   
   THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 65
   STATUTE MILES EAST AND WEST OF A LINE FROM 60 MILES NORTH
   NORTHWEST OF GAINESVILLE FLORIDA TO 35 MILES SOUTH SOUTHWEST OF
   ORLANDO FLORIDA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
   ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU3).
   
   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.
   
   OTHER WATCH INFORMATION...CONTINUE...WW 490...WW 491...WW 492...
   
   DISCUSSION...CLUSTERS OF THUNDERSTORMS IN GA WILL SPREAD SWD INTO FL
   ON NNWLY MID LEVEL STEERING FLOW...WITH THE STRONGEST STORMS FOCUSED
   WHERE THE CLUSTERS INTERSECT THE STALLED E COAST SEA BREEZE. 
   MODERATE INSTABILITY AND HOT SURFACE TEMPERATURES/RELATIVELY DEEP
   MIXED LAYERS WILL PROMOTE STRONG DOWNDRAFTS AND THE POTENTIAL FOR
   DAMAGING WINDS THROUGH THE EARLY OVERNIGHT HOURS.  THE MOST INTENSE
   STORMS MAY ALSO PRODUCE ISOLATED LARGE HAIL.
   
   AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
   TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
   KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550. MEAN STORM
   MOTION VECTOR 34025.
   
   
   ...THOMPSON
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Page last modified: June 22, 2009
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