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URGENT - IMMEDIATE BROADCAST REQUESTED

SEVERE THUNDERSTORM WATCH NUMBER 463

NWS STORM PREDICTION CENTER NORMAN OK

625 PM EDT SUN AUG 2 2015



THE NWS STORM PREDICTION CENTER HAS ISSUED A



* SEVERE THUNDERSTORM WATCH FOR PORTIONS OF

  CENTRAL AND SOUTHERN LOWER MICHIGAN

  LAKE HURON

  LAKE MICHIGAN



* EFFECTIVE THIS SUNDAY NIGHT AND MONDAY MORNING FROM 625 PM

  UNTIL 200 AM EDT.



* PRIMARY THREATS INCLUDE...

  WIDESPREAD DAMAGING WINDS EXPECTED WITH ISOLATED SIGNIFICANT

    GUSTS TO 80 MPH POSSIBLE

  WIDESPREAD LARGE HAIL LIKELY WITH ISOLATED VERY LARGE HAIL

    EVENTS TO 2.5 INCHES IN DIAMETER POSSIBLE

  A TORNADO OR TWO POSSIBLE



SUMMARY...W-E ORIENTED SQUALL LINE NOW EXTENDING FROM E CENTRAL WI

TO THE MI THUMB...WITH EMBEDDED BOW ECHOES AND SUPERCELLS...EXPECTED

TO MOVE GENERALLY ESE THROUGH LATE THIS EVENING.  ADDITIONAL STORMS

MAY FORM AHEAD OF THE LINE IN CENTRAL LOWER MI. POTENTIAL WILL EXIST

FOR NUMEROUS SWATHS OF DAMAGING WIND...AND POSSIBLY A BRIEF TORNADO

OR TWO...IN ADDITION TO LARGE HAIL.



THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 100

STATUTE MILES EAST AND WEST OF A LINE FROM 45 MILES NORTH OF

SAGINAW MICHIGAN TO 30 MILES EAST SOUTHEAST OF KALAMAZOO

MICHIGAN.  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.



&&



OTHER WATCH INFORMATION...CONTINUE...WW 462...



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

TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 70

KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 550. MEAN STORM

MOTION VECTOR 29040.





...CORFIDI

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