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Severe Thunderstorm Watch 483
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WW0483 Radar
Hazard Tornadoes EF2+ Tornadoes
Likelihood Low Very Low
Severe Wind 65 kt+ Wind
Moderate 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.
   SEL3

   URGENT - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH NUMBER 483
   NWS STORM PREDICTION CENTER NORMAN OK
   230 PM CDT MON SEP 19 2016

   THE NWS STORM PREDICTION CENTER HAS ISSUED A

   * SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
     EXTREME NORTHEASTERN IOWA
     SOUTHERN WISCONSIN
     LAKE MICHIGAN

   * EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 230 PM UNTIL
     800 PM CDT.

   * PRIMARY THREATS INCLUDE...
     SCATTERED LARGE HAIL EVENTS TO 1.5 INCHES IN DIAMETER POSSIBLE
     ISOLATED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE

   SUMMARY...THUNDERSTORMS ARE FORMING ALONG AND IMMEDIATELY BEHIND A
   SURFACE COLD FRONT THAT WILL MOVE SOUTHEASTWARD ACROSS NORTHEAST
   IOWA AND SOUTHERN WISCONSIN THIS AFTERNOON.  THE ENVIRONMENT WILL BE
   FAVORABLE FOR ORGANIZED SEVERE STORMS...INCLUDING SUPERCELLS...IN A
   NARROW CORRIDOR NEAR THE FRONT.  LARGE HAIL AND ISOLATED DAMAGING
   WINDS WILL BE THE MAIN THREATS THROUGH THIS EVENING.

   THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 30
   STATUTE MILES NORTH AND SOUTH OF A LINE FROM 45 MILES WEST
   SOUTHWEST OF LONEROCK WISCONSIN TO 15 MILES NORTH NORTHEAST OF
   MILWAUKEE WISCONSIN.  FOR A COMPLETE DEPICTION OF THE WATCH SEE
   THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU3).

   PRECAUTIONARY/PREPAREDNESS ACTIONS...

   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.

   &&

   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 500. MEAN STORM
   MOTION VECTOR 29035.


   ...THOMPSON
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Page last modified: September 20, 2016
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