252 FZUS73 KGRR 130116 MWSGRR Marine Weather Statement National Weather Service Grand Rapids MI 916 PM EDT Tue May 12 2026 LMZ848-849-868-870-130215- /O.CON.KGRR.MA.W.0022.000000T0000Z-260513T0215Z/ 916 PM EDT Tue May 12 2026 ...A SPECIAL MARINE WARNING REMAINS IN EFFECT UNTIL 1015 PM EDT... For the following areas... Nearshore and Open Waters from Whitehall to Manistee MI... At 916 PM EDT, strong thunderstorms were located along a line extending from Ludington Light to 18 nm west of Little Sable Point Light, moving east at 35 knots. HAZARD...Wind gusts to 40 knots and small hail. SOURCE...Radar indicated. IMPACT...Small craft could be damaged in briefly higher winds and suddenly higher waves. Locations impacted include... Ludington Light, Little Sable Point Light, and Pentwater Pier Heads. PRECAUTIONARY/PREPAREDNESS ACTIONS... Move to safe harbor until hazardous weather passes. && LAT...LON 4371 8712 4386 8699 4401 8661 4400 8648 4394 8645 4381 8643 4374 8646 4368 8653 4365 8654 4360 8653 4355 8650 4362 8713 TIME...MOT...LOC 0116Z 274DEG 37KT 4394 8647 4371 8695 HAIL...<.75IN WIND...40KTS $$ RAH  094 WHUS53 KGRR 130137 SMWGRR LMZ847-848-870-872-130230- /O.NEW.KGRR.MA.W.0023.260513T0137Z-260513T0230Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Special Marine Warning National Weather Service Grand Rapids MI 937 PM EDT Tue May 12 2026 The National Weather Service in Grand Rapids has issued a * Special Marine Warning for... Nearshore and Open Waters from Grand Haven to Pentwater MI... * Until 1030 PM EDT. * At 936 PM EDT, a strong thunderstorm was located 19 nm west of Little Sable Point Light, moving east at 40 knots. HAZARD...Wind gusts to 40 knots and small hail. SOURCE...Radar. IMPACT...Small craft could be damaged in briefly higher winds and suddenly higher waves. * Locations impacted include... White Lake Pier Heads and The White Lake Pierheads. PRECAUTIONARY/PREPAREDNESS ACTIONS... Move to safe harbor until hazardous weather passes. && LAT...LON 4362 8713 4355 8650 4351 8647 4331 8639 4347 8714 TIME...MOT...LOC 0136Z 284DEG 38KT 4356 8697 HAIL...<.75IN WIND...40KTS $$ RAH  850 FZUS73 KGRR 130138 MWSGRR Marine Weather Statement National Weather Service Grand Rapids MI 938 PM EDT Tue May 12 2026 LMZ848-849-868-870-130215- /O.CON.KGRR.MA.W.0022.000000T0000Z-260513T0215Z/ 938 PM EDT Tue May 12 2026 ...A SPECIAL MARINE WARNING REMAINS IN EFFECT UNTIL 1015 PM EDT... For the following areas... Nearshore and Open Waters from Whitehall to Manistee MI... At 938 PM EDT, strong thunderstorms were located along a line extending from 12 nm east of Ludington Light to near Little Sable Point Light, moving east at 35 knots. HAZARD...Wind gusts to 40 knots and small hail. SOURCE...Radar indicated. IMPACT...Small craft could be damaged in briefly higher winds and suddenly higher waves. Locations impacted include... Ludington Light, Little Sable Point Light, and Pentwater Pier Heads. PRECAUTIONARY/PREPAREDNESS ACTIONS... Move to safe harbor until hazardous weather passes. && LAT...LON 4379 8689 4401 8661 4400 8648 4394 8645 4381 8643 4374 8646 4368 8653 4365 8654 4360 8653 4355 8650 4362 8713 TIME...MOT...LOC 0138Z 274DEG 37KT 4392 8619 4370 8667 HAIL...<.75IN WIND...40KTS $$ RAH  052 FZUS73 KGRR 130152 MWSGRR Marine Weather Statement National Weather Service Grand Rapids MI 952 PM EDT Tue May 12 2026 LMZ847-848-870-872-130230- /O.CON.KGRR.MA.W.0023.000000T0000Z-260513T0230Z/ 952 PM EDT Tue May 12 2026 ...A SPECIAL MARINE WARNING REMAINS IN EFFECT UNTIL 1030 PM EDT... For the following areas... Nearshore and Open Waters from Grand Haven to Pentwater MI... At 952 PM EDT, a strong thunderstorm was located 16 nm southwest of Little Sable Point Light, moving east at 35 knots. HAZARD...Wind gusts to 40 knots and small hail. SOURCE...Radar indicated. IMPACT...Small craft could be damaged in briefly higher winds and suddenly higher waves. Locations impacted include... White Lake Pier Heads and The White Lake Pierheads. PRECAUTIONARY/PREPAREDNESS ACTIONS... Move to safe harbor until hazardous weather passes. && LAT...LON 4355 8650 4351 8647 4331 8639 4349 8709 4360 8698 TIME...MOT...LOC 0152Z 279DEG 34KT 4351 8687 HAIL...<.75IN WIND...40KTS $$ RAH  797 FZUS73 KGRR 130158 MWSGRR Marine Weather Statement National Weather Service Grand Rapids MI 958 PM EDT Tue May 12 2026 LMZ868-130208- /O.CAN.KGRR.MA.W.0022.000000T0000Z-260513T0215Z/ 958 PM EDT Tue May 12 2026 ...THE SPECIAL MARINE WARNING IS CANCELLED... The affected areas were... Open Waters from Pentwater to Manistee MI... The thunderstorms have moved out of the warned area and no longer pose a significant threat to boaters. LAT...LON 4372 8672 4381 8643 4374 8646 4368 8653 4365 8654 4360 8653 4355 8650 4359 8689 TIME...MOT...LOC 0158Z 285DEG 33KT 4383 8643 4359 8672 $$ LMZ848-849-870-130215- /O.CON.KGRR.MA.W.0022.000000T0000Z-260513T0215Z/ 958 PM EDT Tue May 12 2026 ...A SPECIAL MARINE WARNING REMAINS IN EFFECT UNTIL 1015 PM EDT... For the following areas... Nearshore Waters from Whitehall to Manistee MI... Open Waters from Whitehall to Pentwater MI... At 958 PM EDT, strong thunderstorms were located along a line extending from near Pentwater Pier Heads to 8 nm southwest of Little Sable Point Light, moving east at 35 knots. HAZARD...Wind gusts to 40 knots. SOURCE...Radar indicated. IMPACT...Small craft could be damaged in briefly higher winds and suddenly higher waves. Locations impacted include... Little Sable Point Light and Pentwater Pier Heads. PRECAUTIONARY/PREPAREDNESS ACTIONS... Move to safe harbor until hazardous weather passes. && LAT...LON 4372 8672 4381 8643 4374 8646 4368 8653 4365 8654 4360 8653 4355 8650 4359 8689 TIME...MOT...LOC 0158Z 285DEG 33KT 4383 8643 4359 8672 HAIL...0.00IN WIND...40KTS $$ RAH