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WWUS20 KWNS 130105

SEL1

SPC WW 130105

MIZ000-LHZ000-LMZ000-130800-



URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 321

NWS Storm Prediction Center Norman OK

905 PM EDT Mon Jun 12 2017



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  Central Lower Michigan

  Lake Huron

  Lake Michigan



* Effective this Monday night and Tuesday morning from 905 PM

  until 400 AM EDT.



* Primary threats include...

  Isolated damaging wind gusts to 70 mph possible



SUMMARY...A well-developed, occasionally severe, bowing arc of

thunderstorms in eastern Wisconsin may survive its trek across a

shallow/stable marine layer of Lake Michigan and pose a threat of

damaging wind in Lower Michigan.



The severe thunderstorm watch area is approximately along and 70

statute miles north and south of a line from 45 miles southwest of

Manistee MI to 5 miles north northeast of Bad Axe MI. For a complete

depiction of the watch see the associated watch outline update

(WOUS64 KWNS WOU1).



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 317...WW 318...WW

319...WW 320...



AVIATION...A few severe thunderstorms with hail surface and aloft to

1 inch. Extreme turbulence and surface wind gusts to 60 knots. A few

cumulonimbi with maximum tops to 450. Mean storm motion vector

27035.



...Edwards

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