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Severe Thunderstorm Watch 144
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WW0144 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 144
   NWS STORM PREDICTION CENTER NORMAN OK
   305 PM CDT SUN MAY 11 2014

   THE NWS STORM PREDICTION CENTER HAS ISSUED A

   * SEVERE THUNDERSTORM WATCH FOR PORTIONS OF 
     CENTRAL AND NORTHERN ILLINOIS
     NORTHWESTERN INDIANA
     SOUTHERN WISCONSIN
     LAKE MICHIGAN

   * EFFECTIVE THIS SUNDAY AFTERNOON AND EVENING FROM 305 PM UNTIL
     1000 PM CDT.

   * PRIMARY THREATS INCLUDE...
     ISOLATED VERY LARGE HAIL EVENTS TO 2 INCHES IN DIAMETER POSSIBLE
     ISOLATED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE
     A TORNADO OR TWO POSSIBLE

   THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 85
   STATUTE MILES NORTH AND SOUTH OF A LINE FROM 50 MILES NORTH OF
   MOLINE ILLINOIS TO 55 MILES NORTHEAST OF MARSEILLES ILLINOIS. 
   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 141...WW 142...WW 143...

   DISCUSSION...AS A CONVECTIVELY GENERATED CYCLONIC VORTICITY CENTER
   AND ASSOCIATED MID-LEVEL JET STREAK MIGRATE NORTHEASTWARD OUT OF
   IOWA INTO THE UPPER MIDWEST...AT LEAST SCATTERED SEVERE STORM
   DEVELOPMENT IS EXPECTED LATE THIS AFTERNOON.  THE EVOLUTION OF AN
   ORGANIZING STORM CLUSTER ALSO APPEARS POSSIBLE ACROSS SOUTHERN
   WISCONSIN AND NORTHERN ILLINOIS...WHICH COULD IMPACT THE MILWAUKEE
   AND CHICAGO METROPOLITAN AREAS WITH THE RISK OF POTENTIALLY DAMAGING
   WIND GUSTS...IN ADDITION TO SEVERE HAIL...BY EARLY EVENING.

   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 26025.


   ...KERR
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Page last modified: May 12, 2014
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