####018001906#### WWUS20 KWNS 171549 SEL1 SPC WW 171549 MIZ000-LEZ000-LHZ000-172300- URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 121 NWS Storm Prediction Center Norman OK 1150 AM EDT Wed Apr 17 2024 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of Central and Southern Lower Michigan Lake Erie Lake Huron * Effective this Wednesday morning and evening from 1150 AM until 700 PM EDT. * Primary threats include... Scattered damaging wind gusts to 70 mph possible Scattered large hail events to 1.5 inches in diameter possible A tornado or two possible SUMMARY...A line of thunderstorms currently developing across southwestern Lower Michigan is expected to continue northeastward throughout the day while intensifying. Primary severe hazards within this developing line will be damaging gusts, with some isolated hail possible as well. The severe thunderstorm watch area is approximately along and 55 statute miles north and south of a line from 20 miles northwest of Kalamazoo MI to 30 miles north northeast of Mount Clemens 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. && 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 500. Mean storm motion vector 24030. ...Mosier