WW 540 SEVERE TSTM MI LE LH 211340Z – 211700Z
URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 540 NWS Storm Prediction Center Norman OK 940 AM EDT Wed Sep 21 2022 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of Southeast Lower Michigan Lake Erie Lake Huron * Effective this Wednesday morning and afternoon from 940 AM until 100 PM EDT. * Primary threats include... Scattered large hail events to 1.5 inches in diameter possible Isolated damaging wind gusts to 60 mph possible SUMMARY...Elevated cluster should spread southeast across the rest of southeast Lower Michigan through midday with a primary threat of severe hail and a secondary threat of locally damaging winds. The severe thunderstorm watch area is approximately along and 50 statute miles east and west of a line from 85 miles north northeast of Mount Clemens MI to 15 miles southeast of Jackson MI. For a complete depiction of the watch see the associated watch outline update (WOUS64 KWNS WOU0). 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 50 knots. A few cumulonimbi with maximum tops to 450. Mean storm motion vector 30030. ...Grams
