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Severe Thunderstorm Watch 472
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WW0472 Radar
Hazard Tornadoes EF2+ Tornadoes
Likelihood Low Very Low
Severe Wind 65 kt+ Wind
Low Low
Severe Hail 2"+ Hail
Moderate Low

Note:  The expiration time in the watch graphic is amended if the watch is replaced, cancelled or extended.
Note: Click for Watch Status Reports.
   SEL2
   
   URGENT - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH NUMBER 472
   NWS STORM PREDICTION CENTER NORMAN OK
   1050 PM CDT THU JUN 18 2009
   
   THE NWS STORM PREDICTION CENTER HAS ISSUED A
   SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
   
          PARTS OF EAST-CENTRAL AND SOUTHERN MINNESOTA
   
   EFFECTIVE THIS THURSDAY NIGHT AND FRIDAY MORNING FROM 1050 PM
   UNTIL 500 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 40 MILES SOUTH
   SOUTHWEST OF REDWOOD FALLS MINNESOTA TO 15 MILES NORTHEAST OF
   MINNEAPOLIS MINNESOTA.  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
   TORNADO WATCH NUMBER 467. WATCH NUMBER 467 WILL NOT BE IN EFFECT
   AFTER 1050 PM CDT. CONTINUE...WW 469...WW 470...WW 471...
   
   DISCUSSION...MOIST/MODERATELY-UNSTABLE AIRMASS PERSISTS ACROSS PARTS
   OF THE SRN HALF OF MN...AHEAD OF A NE-SW BAND OF SCATTERED SHOWERS
   AND THUNDERSTORMS.  WHILE THIS CONVECTION HAS WEAKENED OVER THE PAST
   COUPLE OF HOURS...WELL-DEFINED UPPER SYSTEM CENTERED OVER NRN MN
   CONTINUES TO SHIFT SLOWLY EWD -- WHICH SHOULD CONTINUE TO SUPPORT
   SOME POTENTIAL FOR CONVECTIVE REDEVELOPMENT OVER THE NEXT FEW HOURS.
    WITH FAVORABLE SHEAR IN PLACE ACROSS THE AREA...ANY DEVELOPING
   STORMS WOULD LIKELY BECOME SUPERCELLULAR -- ALONG WITH ASSOCIATED
   POTENTIAL FOR LARGE HAIL AND DAMAGING WINDS.  IN
   ADDITION...LOW-LEVEL VEERING WITH HEIGHT SUGGESTS A LIMITED THREAT
   FOR AN ISOLATED/BRIEF TORNADO WITH ANY SUSTAINED SUPERCELL.
   
   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 26030.
   
   
   ...GOSS
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Page last modified: June 19, 2009
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