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Severe Thunderstorm Watch 432
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WW0432 Radar
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   SEL2
   
   URGENT - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH NUMBER 432
   NWS STORM PREDICTION CENTER NORMAN OK
   430 AM CDT TUE JUN 3 2008
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
   
          WESTERN AND CENTRAL IOWA
          NORTHERN MISSOURI
          SOUTHEASTERN NEBRASKA
   
   EFFECTIVE THIS TUESDAY MORNING FROM 430 AM UNTIL NOON CDT.
   
   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 85
   STATUTE MILES EAST AND WEST OF A LINE FROM 35 MILES SOUTH
   SOUTHEAST OF SHENANDOAH IOWA TO 45 MILES EAST NORTHEAST OF FORT
   DODGE IOWA.  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 427...SEVERE THUNDERSTORM WATCH
   NUMBER 428. WATCH NUMBER 427 428 WILL NOT BE IN EFFECT AFTER 430
   AM CDT. CONTINUE...WW 429...WW 430...WW 431...
   
   DISCUSSION...STRONG TO SVR TSTMS EXPECTED TO PERSIST ALONG AND AHEAD
   OF LOBE OF ASCENT EXTENDING SSW FROM NW IA MCV.  THE TSTMS LIKELY
   ARE ELEVATED...ROOTED IN A MOIST LAYER NEAR 800 OR 750 MB...ABOVE
   THE STOUT EML.  SUFFICIENT ELEVATED CAPE APPEARS PRESENT TO SUPPORT
   SVR HAIL...WITH DMGG WIND ALSO POSSIBLE.  IN ADDITION...STORMS IN SW
   AND S CNTRL IA WILL HAVE TO BE MONITORED FOR SIGNS THAT THEY ARE
   BEGINNING TO TAP BOUNDARY LAYER AIR.  MOIST ESELY SFC FLOW IN THIS
   REGION COULD SUPPORT ENHANCED LOW-LEVEL ROTATION/POSSIBLE TORNADOES
   IF THAT SCENARIO WERE TO OCCUR.
   
   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 500. MEAN STORM
   MOTION VECTOR 26030.
   
   
   ...CORFIDI
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