SPC Severe Thunderstorm Watch 274



WW 274 SEVERE TSTM MI LM 101500Z – 102200Z

WW 0274 Image

URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 274
NWS Storm Prediction Center Norman OK
1100 AM EDT Wed Jun 10 2020

The NWS Storm Prediction Center has issued a

* Severe Thunderstorm Watch for portions of 
  Southwest and west central Michigan
  Lake Michigan

* Effective this Wednesday morning and evening from 1100 AM until
  600 PM EDT.

* Primary threats include...
  Widespread damaging winds and isolated significant gusts to 75
    mph likely
  Scattered large hail events to 1.5 inches in diameter possible
  A tornado or two possible

SUMMARY...Clusters of storms over Lake Michigan will spread inland
over southwest Lower Michigan in the next couple of hours, with
additional storm development likely farther east.  The storm
environment favors damaging winds with bowing segments or clusters,
along with isolated large hail and a possible tornado or two.

The severe thunderstorm watch area is approximately along and 40
statute miles east and west of a line from 85 miles north of Grand
Rapids MI to 10 miles south southeast of Kalamazoo MI. For a
complete depiction of the watch see the associated watch outline
update (WOUS64 KWNS WOU4).

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
1.5 inches. Extreme turbulence and surface wind gusts to 65 knots. A
few cumulonimbi with maximum tops to 500. Mean storm motion vector
23045.

...Thompson

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