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WWUS20 KWNS 030128

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IAZ000-ILZ000-INZ000-MIZ000-OHZ000-LMZ000-030700-



URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 465

NWS STORM PREDICTION CENTER NORMAN OK

830 PM CDT SUN AUG 2 2015



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

  EASTERN IOWA

  NORTHERN ILLINOIS

  NORTHERN INDIANA

  SOUTHERN LOWER MICHIGAN

  NORTHWEST OHIO

  LAKE MICHIGAN



* EFFECTIVE THIS SUNDAY NIGHT AND MONDAY MORNING FROM 830 PM

  UNTIL 200 AM CDT.



* PRIMARY THREATS INCLUDE...

  SCATTERED DAMAGING WINDS LIKELY WITH ISOLATED SIGNIFICANT GUSTS

    TO 75 MPH POSSIBLE

  SCATTERED LARGE HAIL LIKELY WITH ISOLATED VERY LARGE HAIL EVENTS

    TO 2.5 INCHES IN DIAMETER POSSIBLE

  A TORNADO OR TWO POSSIBLE



SUMMARY...THUNDERSTORMS EXPECTED TO INCREASE IN COVERAGE AND

STRENGTH ALONG AND AHEAD OF SE-MOVING COLD FRONT NOW OVER NE AND E

CENTRAL IOWA. AT THE SAME TIME...WESTERN END OF LOWER MI SQUALL LINE

EXPECTED TO CONTINUE ESE. SUPERCELLS AND BOWS WITHIN THE SQUALL

LINE...AND MORE DISCRETE SUPERCELLS NEAR THE COLD FRONT...WILL HAVE

THE POTENTIAL TO PRODUCE LARGE HAIL...A FEW SWATHS OF DAMAGING

WIND...AND POSSIBLY A TORNADO OR TWO IN WATCH AREA THROUGH EARLY

MONDAY.



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 175

STATUTE MILES EAST AND WEST OF A LINE FROM 40 MILES NORTHWEST OF

BENTON HARBOR MICHIGAN TO 25 MILES SOUTHWEST OF MARSEILLES

ILLINOIS.  FOR A COMPLETE DEPICTION OF THE WATCH SEE THE

ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU5).



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 462...WW 463...WW 464...



AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT

TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 65

KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 600. MEAN STORM

MOTION VECTOR 30025.





...CORFIDI

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