112 WHUS53 KGRR 150938 SMWGRR LMZ844-845-874-876-878-151045- /O.NEW.KGRR.MA.W.0017.260415T0938Z-260415T1045Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Special Marine Warning National Weather Service Grand Rapids MI 538 AM EDT Wed Apr 15 2026 The National Weather Service in Grand Rapids has issued a * Special Marine Warning for... Nearshore Waters from St Joseph to Holland MI... Open Waters from St Joseph to Grand Haven MI... * Until 645 AM EDT. * At 537 AM EDT, a severe thunderstorm was located 26 nm west of South Haven Light, moving east at 40 knots. HAZARD...Wind gusts to 40 knots and large hail. SOURCE...Radar. IMPACT...Small craft could be damaged in briefly higher winds and suddenly higher waves. Large hail could result in structural damage. * Locations impacted include... South Haven Light. LAT...LON 4248 8625 4236 8630 4233 8700 4279 8706 4277 8621 TIME...MOT...LOC 0937Z 258DEG 42KT 4255 8684 HAIL...>.75IN WIND...40KTS $$ JC