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   URGENT - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH NUMBER 310
   NWS STORM PREDICTION CENTER NORMAN OK
   315 PM CDT SAT MAY 21 2005
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
   
          NORTHERN MINNESOTA
   
   EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 315 PM UNTIL
   900 PM 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 65
   STATUTE MILES EAST AND WEST OF A LINE FROM 15 MILES EAST NORTHEAST
   OF WARROAD MINNESOTA TO 55 MILES WEST SOUTHWEST OF BRAINERD
   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.
   
   DISCUSSION...THUNDERSTORMS INCREASING ALONG FRONT MOVING INTO NWRN
   MN.  ALTHOUGH INSTABILITY IS MARGINAL...VERY STRONG DEEP LAYER SHEAR
   WITH APPROACH OF NEARLY 100 KT 500 MB WIND MAX EXPECTED TO SUPPORT
   SEVERE THUNDERSTORMS AS FRONT MOVES EWD ACROSS NRN MN. PRIMARY
   THREAT WILL BE DAMAGING WINDS WITH FAST MOVING STORMS.
   
   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.
   
   
   ...HALES