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WWUS20 KWNS 072315

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URGENT - IMMEDIATE BROADCAST REQUESTED

Severe Thunderstorm Watch Number 83

NWS Storm Prediction Center Norman OK

715 PM EDT Tue Apr 7 2020



The NWS Storm Prediction Center has issued a



* Severe Thunderstorm Watch for portions of

  Southeast Lower Michigan

  Lake Erie



* Effective this Tuesday night and Wednesday morning from 715 PM

  until 100 AM EDT.



* Primary threats include...

  Scattered large hail and isolated very large hail events to 2

    inches in diameter possible

  Isolated damaging wind gusts to 60 mph possible

  A tornado or two possible



SUMMARY...An initially elevated cluster with embedded supercell

structure will progress southeast from east-central Lower Michigan.

Additional surface-based supercells across southwest Lower Michigan

should spread into far southeast Lower Michigan later this evening.



The severe thunderstorm watch area is approximately along and 35

statute miles east and west of a line from 25 miles north northeast

of Saginaw MI to 35 miles south of Ann Arbor MI. 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 81...WW 82...



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

2 inches. Extreme turbulence and surface wind gusts to 50 knots. A

few cumulonimbi with maximum tops to 450. Mean storm motion vector

30040.



...Grams

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