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Severe Thunderstorm Watch 46
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WW0046 Radar
Note:  The expiration time in the watch graphic is amended if the watch is replaced, cancelled or extended.
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   SEL6
   
   URGENT - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH NUMBER 46
   NWS STORM PREDICTION CENTER NORMAN OK
   735 PM CST SAT MAR 7 2009
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
   
          EXTREME EAST CENTRAL KANSAS
          NORTHWEST INTO NORTH CENTRAL MISSOURI
   
   EFFECTIVE THIS SATURDAY NIGHT AND SUNDAY MORNING FROM 735 PM
   UNTIL 300 AM CST.
   
   HAIL TO 1.5 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 55
   STATUTE MILES NORTH AND SOUTH OF A LINE FROM 35 MILES SOUTH
   SOUTHEAST OF KIRKSVILLE MISSOURI TO 25 MILES WEST SOUTHWEST OF
   OLATHE KANSAS.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
   ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU6).
   
   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 45...
   
   DISCUSSION...ONGOING CLUSTERS OF SEVERE STORMS WILL CONTINUE TO
   SPREAD ENEWD ALONG A STATIONARY FRONT INTO THE KANSAS CITY AREA
   AROUND 03Z...AND AREAS FARTHER TO ENE IN MO THROUGH THE OVERNIGHT
   HOURS.  THE 00Z TOP SOUNDING APPEARED TO BE REPRESENTATIVE OF THE
   ENVIRONMENT NEAR THE FRONT...WITH MUCAPE JUST UNDER 1000 J/KG.  THIS
   INSTABILITY WILL BE SUFFICIENT FOR LARGE HAIL GIVEN THE COOL MID
   LEVEL TEMPERATURES... WHILE EFFECTIVE BULK SHEAR AOA 50 KT AND
   INCREASING LOW-LEVEL SHEAR WILL SUPPORT SUPERCELLS AND EMBEDDED
   BOWS.  WARM SECTOR MOISTURE/INSTABILITY ARE NOT PARTICULARLY LARGE
   AND SOME CONVECTIVE INHIBITION REMAINS...SO THE STORMS SHOULD REMAIN
   CLOSE TO THE FRONT THROUGH MUCH OF THE NIGHT.
   
   AVIATION...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 25040.
   
   
   ...THOMPSON
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