Thursday, June 14, 2012

SEVERE THUNDERSTORM WATCH FOR PORTIONS OF SOUTHERN MINNESOTA WEST-CENTRAL WISCONSIN EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 245 PM UNTIL 1000 PM CDT





   SEL9          URGENT - IMMEDIATE BROADCAST REQUESTED     SEVERE THUNDERSTORM WATCH NUMBER 389     NWS STORM PREDICTION CENTER NORMAN OK     245 PM CDT THU JUN 14 2012          THE NWS STORM PREDICTION CENTER HAS ISSUED A     SEVERE THUNDERSTORM WATCH FOR PORTIONS OF                  SOUTHERN MINNESOTA            WEST-CENTRAL WISCONSIN          EFFECTIVE THIS THURSDAY AFTERNOON AND EVENING FROM 245 PM UNTIL     1000 PM 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 50     STATUTE MILES NORTH AND SOUTH OF A LINE FROM 35 MILES SOUTHWEST     OF REDWOOD FALLS MINNESOTA TO 25 MILES NORTH OF LA CROSSE     WISCONSIN.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE     ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU9).          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...ELEVATED SEVERE STORMS ARE EXPECTED TO PERSIST N OF     OUTFLOW BOUNDARY THIS AFTERNOON...FORCED BY WAA ALONG SWLY LLJ AXIS.     THE COMBINATION OF MODERATE ELEVATED INSTABILITY AND MODERATELY     STRONG CLOUD-BEARING SHEAR WILL BE SUPPORTIVE OF SUPERCELLS CAPABLE     OF LARGE HAIL AND PERHAPS DAMAGING WIND GUSTS.          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 27030. 

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