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URGENT - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Watch Number 151
NWS Storm Prediction Center Norman OK
205 PM EDT Thu Apr 20 2017
The NWS Storm Prediction Center has issued a
* Severe Thunderstorm Watch for portions of
South central and southeast Lower Michigan
* Effective this Thursday afternoon and evening from 205 PM until
800 PM EDT.
* Primary threats include...
Scattered damaging wind gusts to 70 mph possible
Isolated large hail events to 1.5 inches in diameter possible
SUMMARY...Clusters of strong/severe storms will continue to develop
through the afternoon from Indiana into southern Lower Michigan and
northwestern Ohio. Occasional damaging gusts and large hail will be
the main concerns through the afternoon and into this evening.
The severe thunderstorm watch area is approximately along and 80
statute miles east and west of a line from 15 miles northwest of
Detroit MI to 50 miles south southwest of Findlay OH. For a complete
depiction of the watch see the associated watch outline update
(WOUS64 KWNS WOU1).
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
AVIATION...A few severe thunderstorms with hail surface and aloft to
1.5 inches. Extreme turbulence and surface wind gusts to 60 knots. A
few cumulonimbi with maximum tops to 450. Mean storm motion vector