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Severe Thunderstorm Watch 252
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WW0252 Radar
Hazard Tornadoes EF2+ Tornadoes
Likelihood Low Low
Severe Wind 65 kt+ Wind
High 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.
   SEL2
   
   URGENT - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH NUMBER 252
   NWS STORM PREDICTION CENTER NORMAN OK
   530 AM CDT WED MAY 6 2009
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
   
          SOUTHWESTERN ARKANSAS
          NORTHWESTERN LOUISIANA
          SOUTHERN OKLAHOMA
          NORTH-CENTRAL...NORTHEASTERN AND EASTERN TEXAS
   
   EFFECTIVE THIS WEDNESDAY MORNING AND AFTERNOON FROM 530 AM UNTIL
   100 PM CDT.
   
   HAIL TO 1 INCH IN DIAMETER...THUNDERSTORM WIND GUSTS TO 80
   MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
   
   THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 60
   STATUTE MILES NORTH AND SOUTH OF A LINE FROM 55 MILES WEST
   SOUTHWEST OF ARDMORE OKLAHOMA TO 60 MILES NORTHEAST OF
   NATCHITOCHES LOUISIANA.  FOR A COMPLETE DEPICTION OF THE WATCH
   SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU2).
   
   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...THIS SEVERE THUNDERSTORM WATCH REPLACES
   SEVERE THUNDERSTORM WATCH NUMBER 249. WATCH NUMBER 249 WILL NOT
   BE IN EFFECT AFTER 530 AM CDT. CONTINUE...WW 248...WW 251...
   
   DISCUSSION...INCREASINGLY WELL-ORGANIZED BOW ECHO IN FORMER WW 249
   IS BEGINNING TO PRODUCE SVR GUSTS ABOVE 50 KT AS IT MOVES OVER AND S
   OF SFC WARM FRONT OUTLINED IN MESOSCALE DISCUSSION 727.  THIS MCS
   SHOULD CONTINUE TO SURGE SEWD WITH POTENTIAL FOR SWATH OF DAMAGING
   WIND...POSSIBLE DERECHO...OVER PORTIONS WW AREA.  COUNTY WW AREA
   FANS OUTWARD WITH SEWD EXTENT TO ACCOUNT FOR POTENTIAL
   SPREAD/EXPANSION OF DRIVING COLD POOL.
   
   AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
   TO 1 INCH. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 70 KNOTS.
   A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 600. MEAN STORM MOTION
   VECTOR 30040.
   
   
   ...EDWARDS/EVANS
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