SEVERE THUNDERSTORM WATCH FOR PORTIONS OF UPPER MICHIGAN CENTRAL AND NORTHERN WISCONSIN LAKE MICHIGAN EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 1225 PM UNTIL 800 PM CDT

   SEL6          URGENT - IMMEDIATE BROADCAST REQUESTED     SEVERE THUNDERSTORM WATCH NUMBER 406     NWS STORM PREDICTION CENTER NORMAN OK     1225 PM CDT MON JUN 18 2012          THE NWS STORM PREDICTION CENTER HAS ISSUED A     SEVERE THUNDERSTORM WATCH FOR PORTIONS OF                  UPPER MICHIGAN            CENTRAL AND NORTHERN WISCONSIN            LAKE MICHIGAN          EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 1225 PM UNTIL     800 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 70     STATUTE MILES NORTH AND SOUTH OF A LINE FROM 60 MILES WEST     NORTHWEST OF CAMP DOUGLAS WISCONSIN TO 50 MILES SOUTHEAST OF     ESCANABA MICHIGAN.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE     ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU6).          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...SCATTERED THUNDERSTORMS HAVE BEGUN TO FORM ALONG ZONE     OF INCREASING CU/TCU FROM SOUTHEAST MN INTO CENTRAL WI.  A MOIST AND     MODERATELY UNSTABLE AIR MASS IS IN PLACE ACROSS THIS REGION...ALONG     WITH STRONG WESTERLY FLOW ALOFT.  STORMS SHOULD INTENSIFY WITH     SUPERCELLS AND BOWING STRUCTURES EXPECTED THROUGH THE AFTERNOON.      LARGE HAIL AND DAMAGING WINDS ARE THE MAIN THREAT.  THERE IS A SMALL     AREA OVER NORTHEAST WI WHERE BACKED LOW LEVEL WINDS MAY ALSO RESULT     IN AN ISOLATED TORNADO OR TWO.          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.