SPC Severe Thunderstorm Watch 40
WW 40 SEVERE TSTM IN MI OH LM 150515Z – 151300Z 
URGENT - IMMEDIATE BROADCAST REQUESTED Severe Thunderstorm Watch Number 40 NWS Storm Prediction Center Norman OK 115 AM EDT Sat Mar 15 2025 The NWS Storm Prediction Center has issued a * Severe Thunderstorm Watch for portions of Northern Indiana Far Southern Michigan Far Northwest Ohio Lake Michigan * Effective this Saturday morning from 115 AM until 900 AM EDT. * Primary threats include... Scattered damaging wind gusts to 70 mph possible Scattered large hail events to 1 inch in diameter possible A tornado or two possible SUMMARY...The threat for damaging wind gusts will likely continue through the night as a line of thunderstorms moves across the region. The severe thunderstorm watch area is approximately along and 65 statute miles east and west of a line from 55 miles east northeast of South Bend IN to 50 miles southwest of Fort Wayne IN. 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. && OTHER WATCH INFORMATION...CONTINUE...WW 35...WW 36...WW 37...WW 38...WW 39... AVIATION...A few severe thunderstorms with hail surface and aloft to 1 inch. Extreme turbulence and surface wind gusts to 60 knots. A few cumulonimbi with maximum tops to 500. Mean storm motion vector 24035. ...Mosier