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Severe Thunderstorm Watch 387
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WW0387 Radar
Hazard Tornadoes EF2+ Tornadoes
Likelihood Low Very Low
Severe Wind 65 kt+ Wind
High Moderate
Severe Hail 2"+ Hail
High Moderate

Note:  The expiration time in the watch graphic is amended if the watch is replaced, cancelled or extended.
Note: Click for Watch Status Reports.
   SEL7
   
   URGENT - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH NUMBER 387
   NWS STORM PREDICTION CENTER NORMAN OK
   745 AM CDT FRI JUN 12 2009
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
   
          NORTHWEST ARKANSAS
          SOUTHERN KANSAS
          SOUTHWEST MISSOURI
          NORTHERN AND EASTERN OKLAHOMA
   
   EFFECTIVE THIS FRIDAY MORNING AND AFTERNOON FROM 745 AM UNTIL 300
   PM CDT.
   
   HAIL TO 2.5 INCHES 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 65
   STATUTE MILES NORTH AND SOUTH OF A LINE FROM 40 MILES WEST
   SOUTHWEST OF PONCA CITY OKLAHOMA TO 40 MILES EAST SOUTHEAST OF
   FAYETTEVILLE ARKANSAS.  FOR A COMPLETE DEPICTION OF THE WATCH SEE
   THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU7).
   
   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 386...
   
   DISCUSSION...STRENGTHENING BOW ECHO OVER NORTH CENTRAL OK IS
   EXPECTED TO ACCELERATE SOUTHEASTWARD AND TRACK INTO WESTERN AR LATER
   TODAY...AND EXPAND SOUTHWARD INTO VERY MOIST/UNSTABLE AIRMASS. 
   MORNING SOUNDINGS SHOW THE POTENTIAL FOR AFTERNOON MLCAPE OF
   3000-4000 J/KG AND SUFFICIENT EFFECTIVE SHEAR TO MAINTAIN RISK OF
   DAMAGING WINDS AND HAIL.
   
   AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
   TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 70
   KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550. MEAN STORM
   MOTION VECTOR 29035.
   
   
   ...HART
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