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WWUS20 KWNS 251915

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SPC WW 251915

IAZ000-ILZ000-INZ000-WIZ000-LMZ000-260300-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 103

NWS STORM PREDICTION CENTER NORMAN OK

215 PM CDT MON APR 25 2016



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

  FAR EASTERN IOWA

  NORTHERN ILLINOIS

  FAR NORTHWEST INDIANA

  SOUTHEAST WISCONSIN

  LAKE MICHIGAN



* EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 215 PM UNTIL

  1000 PM CDT.



* PRIMARY THREATS INCLUDE...

  SCATTERED LARGE HAIL LIKELY WITH ISOLATED VERY LARGE HAIL EVENTS

    TO 2 INCHES IN DIAMETER POSSIBLE

  SCATTERED DAMAGING WIND GUSTS TO 70 MPH LIKELY

  A TORNADO OR TWO POSSIBLE



SUMMARY...THUNDERSTORMS EXPECTED TO DEVELOP/INCREASE THIS AFTERNOON

ALONG STATIONARY FRONT IN EASTERN WISCONSIN...AND ALONG AND AHEAD OF

COLD FRONT NOW NEARING THE MISSISSIPPI RIVER IN FAR EASTERN IOWA.

SOME OF THE STORMS COULD EVOLVE INTO CLUSTERS...WITH EMBEDDED

SUPERCELLS AND BOWING STRUCTURES BECOMING CAPABLE OF LARGE

HAIL...DAMAGING WIND...AND POSSIBLE A TORNADO OR TWO.



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 70

STATUTE MILES EAST AND WEST OF A LINE FROM 65 MILES NORTH OF

MILWAUKEE WISCONSIN TO 30 MILES SOUTHWEST OF MARSEILLES ILLINOIS.

 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 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60

KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM

MOTION VECTOR 28040.





...CORFIDI

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