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Severe Thunderstorm Watch 650
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WW0650 Radar
Hazard Tornadoes EF2+ Tornadoes
Likelihood Low Very Low
Severe Wind 65 kt+ Wind
Moderate Moderate
Severe Hail 2"+ Hail
Moderate 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.
   SEL0
   
   URGENT - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH NUMBER 650
   NWS STORM PREDICTION CENTER NORMAN OK
   840 PM CDT SUN AUG 2 2009
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
   
          PARTS OF NORTHWEST IOWA
          MUCH OF SOUTHERN MINNESOTA
          PARTS OF SOUTHEAST SOUTH DAKOTA
   
   EFFECTIVE THIS SUNDAY NIGHT AND MONDAY MORNING FROM 840 PM UNTIL
   300 AM 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 60
   STATUTE MILES NORTH AND SOUTH OF A LINE FROM 20 MILES WEST
   NORTHWEST OF SIOUX FALLS SOUTH DAKOTA TO 25 MILES EAST SOUTHEAST
   OF MINNEAPOLIS MINNESOTA.  FOR A COMPLETE DEPICTION OF THE WATCH
   SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU0).
   
   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 648...WW 649...
   
   DISCUSSION...STORMS ARE INCREASING IN NUMBER AND INTENSITY IN
   ADVANCE OF FAST MOVING S/W TROUGH DAKOTAS.  WITH NOW A MDTLY
   UNSTABLE AND FAVORABLY SHEARED AIR MASS POTENTIAL FOR STORMS TO
   BECOME SEVERE ACROSS THE WATCH AREA WITH DAMAGING WINDS BECOMING THE
   PRIMARY THREAT.  SUPERCELLS ARE ALSO POSSIBLE WITH AN ENHANCED
   THREAT OF LARGE HAIL/DAMAGING WINDS AND BRIEF TORNADOES.
   
   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 26040.
   
   
   ...HALES
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Page last modified: August 03, 2009
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