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Severe Thunderstorm Watch 438
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WW0438 Radar
Hazard Tornadoes EF2+ Tornadoes
Likelihood Low Very Low
Severe Wind 65 kt+ Wind
Moderate Moderate
Severe Hail 2"+ Hail
Moderate 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 438
   NWS STORM PREDICTION CENTER NORMAN OK
   830 PM CDT TUE JUN 16 2009
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
   
          SOUTH CENTRAL AND SOUTHEAST KANSAS
          EXTREME SOUTHWEST MISSOURI
          EXTREME NORTH CENTRAL AND NORTHEAST OKLAHOMA
   
   EFFECTIVE THIS TUESDAY NIGHT AND WEDNESDAY MORNING FROM 830 PM
   UNTIL 100 AM CDT.
   
   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 50
   STATUTE MILES NORTH AND SOUTH OF A LINE FROM 30 MILES SOUTHWEST
   OF WICHITA KANSAS TO 25 MILES EAST NORTHEAST OF JOPLIN MISSOURI. 
   FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
   OUTLINE UPDATE (WOUS64 KWNS WOU8).
   
   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 435...WW 436...WW 437...
   
   DISCUSSION...ISOLATED THUNDERSTORMS HAVE DEVELOPED RECENTLY JUST N
   OF THE KS/OK BORDER ALONG A SLOW-MOVING BOUNDARY.  00Z SOUNDINGS
   REVEALED AN UNSTABLE ENVIRONMENT ALONG THE BOUNDARY /MLCAPE AOA 3000
   J/KG/...AND SUFFICIENT VERTICAL SHEAR FOR SUPERCELLS. 
   HOWEVER...RISING MID LEVEL HEIGHTS...LINGERING CONVECTIVE
   INHIBITION...AND ONLY A WEAK NOCTURNAL LLJ BRING OVERNIGHT SUGGEST
   THAT STORM COVERAGE COULD REMAIN SPARSE.  IF STORMS PERSIST AND/OR
   INCREASE IN COVERAGE...STORM MOTION COULD EVENTUALLY TAKE THE SEVERE
   THREAT INTO EXTREME N/NE OK AND SW MO.
   
   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 29015.
   
   
   ...THOMPSON
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