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Severe Thunderstorm Watch 494
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WW0494 Radar
Hazard Tornadoes EF2+ Tornadoes
Likelihood Low Very Low
Severe Wind 65 kt+ Wind
Moderate Low
Severe Hail 2"+ Hail
Moderate Moderate

Note:  The expiration time in the watch graphic is amended if the watch is replaced, cancelled or extended.
Note: Click for Watch Status Reports.
   SEL4

   URGENT - IMMEDIATE BROADCAST REQUESTED
   SEVERE THUNDERSTORM WATCH NUMBER 494
   NWS STORM PREDICTION CENTER NORMAN OK
   745 AM CDT THU SEP 4 2014

   THE NWS STORM PREDICTION CENTER HAS ISSUED A

   * SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
     PART OF WESTERN UPPER MICHIGAN
     NORTHERN WISCONSIN
     LAKE SUPERIOR

   * EFFECTIVE THIS THURSDAY MORNING FROM 745 AM UNTIL NOON CDT.

   * PRIMARY THREATS INCLUDE...
     SCATTERED LARGE HAIL AND ISOLATED VERY LARGE HAIL EVENTS TO 2
       INCHES IN DIAMETER POSSIBLE
     SCATTERED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE

   THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 45
   STATUTE MILES NORTH AND SOUTH OF A LINE FROM 50 MILES SOUTHWEST
   OF KENNEDY WISCONSIN TO 25 MILES EAST SOUTHEAST OF IRON MOUNTAIN
   MICHIGAN.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE
   ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU4).

   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.

   &&

   OTHER WATCH INFORMATION...CONTINUE...WW 493...

   DISCUSSION...CLUSTER OF SUPERCELLS WILL LIKELY PERSIST FOR SEVERAL
   MORE HOURS WHILE MOVING GENERALLY EWD TO THE IMMEDIATE N OF THE
   SURFACE WARM FRONT.  MODERATE INSTABILITY AND STRONG VERTICAL SHEAR
   N OF THE BOUNDARY WILL MAINTAIN A RISK FOR LARGE HAIL AND DAMAGING
   WINDS...WHILE THE INCREASING CAP NOTED IN THE 12Z MPX SOUNDING
   LIMITS THE SRN EXTENT OF THE THREAT.

   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 550. MEAN STORM
   MOTION VECTOR 28035.


   ...THOMPSON
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Page last modified: September 04, 2014
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