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Severe Thunderstorm Watch 691
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WW0691 Radar
Note:  The expiration time in the watch graphic is amended if the watch is replaced, cancelled or extended.
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   SEL1
   
   URGENT - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH NUMBER 691
   NWS STORM PREDICTION CENTER NORMAN OK
   730 PM CDT MON JUL 14 2008
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
   
          MUCH OF NORTHERN MINNESOTA
          SMALL PART OF NORTHWEST WISCONSIN
          LAKE SUPERIOR
   
   EFFECTIVE THIS MONDAY NIGHT AND TUESDAY MORNING FROM 730 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 60
   STATUTE MILES NORTH AND SOUTH OF A LINE FROM 60 MILES SOUTHWEST
   OF BEMIDJI MINNESOTA TO 50 MILES EAST NORTHEAST OF SILVER BAY
   MINNESOTA.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
   ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU1).
   
   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 690...
   
   DISCUSSION...THUNDERSTORMS CONTINUE TO INCREASE IN NUMBER AND
   INTENSITY ALONG/AHEAD OF COLD FRONT NRN MN.  WITH 30-40 KT OF SHEAR
   ALONG WITH STEEP LAPSE RATES AND MLCAPES AOA 1500 J/KG...STORMS WILL
   HAVE POTENTIAL OF PRODUCING DAMAGING WINDS AND LARGE HAIL AS THEY
   DEVELOP S OF E.
   
   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 500. MEAN STORM
   MOTION VECTOR 28030.
   
   
   ...HALES
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Page last modified: July 15, 2008
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