


Special Marine Warning
Issued by NWS Grand Rapids, MI
Issued by NWS Grand Rapids, MI
713 WHUS53 KGRR 121227 SMWGRR LMZ847>849-868-870-872-874-121330- /O.NEW.KGRR.MA.W.0033.250812T1227Z-250812T1330Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Special Marine Warning National Weather Service Grand Rapids MI 827 AM EDT Tue Aug 12 2025 The National Weather Service in Grand Rapids has issued a * Special Marine Warning for... Nearshore Waters from Grand Haven to Manistee MI... Open Waters from Holland to Manistee MI... * Until 930 AM EDT. * At 826 AM EDT, strong thunderstorms were located along a line extending from 10 nm west of Pentwater Pier Heads to 8 nm southeast of Little Sable Point Light to 11 nm southwest of Muskegon Light, moving east at 35 knots. HAZARD...Wind gusts 34 knots or greater. SOURCE...Radar. IMPACT...Small craft could be damaged in briefly higher winds and suddenly higher waves. * Locations impacted include... White Lake Pier Heads, Little Sable Point Light, and The White Lake Pierheads. LAT...LON 4305 8679 4348 8676 4374 8684 4381 8683 4384 8671 4383 8651 4381 8643 4368 8653 4363 8654 4334 8641 4306 8625 TIME...MOT...LOC 1226Z 265DEG 36KT 4380 8669 4353 8647 4314 8658 HAIL...0.00IN WIND...>34KTS $$ JC