976 WHUS53 KMQT 180610 SMWMQT LSZ240-241-263-180715- /O.NEW.KMQT.MA.W.0003.260518T0610Z-260518T0715Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Special Marine Warning National Weather Service Marquette MI 210 AM EDT Mon May 18 2026 The National Weather Service in Marquette has issued a * Special Marine Warning for... Black River To Ontonagon MI... Lake Superior from Saxon Harbor WI to Upper Entrance to Portage Canal MI 5NM off shore to the US/Canadian border including Isle Royale National Park... Saxon Harbor WI to Black River MI... * Until 315 AM EDT. * At 209 AM EDT, a severe thunderstorm was located 25 nm southeast of Oak Point, or 60 nm south of The Western Lake Superior Buoy, moving northeast at 40 knots. HAZARD...Wind gusts 34 knots or greater 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. * The severe thunderstorm will remain over mainly open waters. PRECAUTIONARY/PREPAREDNESS ACTIONS... Move to safe harbor until hazardous weather passes. Frequent lightning is occurring with this storm. If caught on the open water stay below deck if possible, keep away from ungrounded metal objects. && LAT...LON 4705 8980 4689 8949 4679 8961 4678 8976 4663 9001 4656 9028 TIME...MOT...LOC 0609Z 217DEG 40KT 4637 9032 HAIL...>.75IN WIND...>34KTS $$ TAP  073 FZUS73 KMQT 180642 MWSMQT Marine Weather Statement National Weather Service Marquette MI 242 AM EDT Mon May 18 2026 LSZ240-241-263-180715- /O.CON.KMQT.MA.W.0003.000000T0000Z-260518T0715Z/ 242 AM EDT Mon May 18 2026 ...A SPECIAL MARINE WARNING REMAINS IN EFFECT UNTIL 315 AM EDT... For the following areas... Black River To Ontonagon MI... Lake Superior from Saxon Harbor WI to Upper Entrance to Portage Canal MI 5NM off shore to the US/Canadian border including Isle Royale National Park... Saxon Harbor WI to Black River MI... At 242 AM EDT, a severe thunderstorm was located 29 nm east of Madeline Island, or 39 nm south of The Western Lake Superior Buoy, moving northeast at 40 knots. HAZARD...Wind gusts 34 knots or greater and large hail. SOURCE...Radar indicated. IMPACT...Small craft could be damaged in briefly higher winds and suddenly higher waves. Large hail could result in structural damage. The severe thunderstorm will remain over mainly open waters. PRECAUTIONARY/PREPAREDNESS ACTIONS... Move to safe harbor until hazardous weather passes. Frequent lightning is occurring with this storm. If caught on the open water stay below deck if possible, keep away from ungrounded metal objects. && LAT...LON 4705 8980 4689 8949 4679 8961 4678 8976 4663 9001 4656 9028 TIME...MOT...LOC 0642Z 217DEG 40KT 4666 9000 HAIL...>.75IN WIND...>34KTS $$ TAP  860 WHUS53 KDLH 180646 SMWDLH LSZ121-146>148-150-162-180745- /O.NEW.KDLH.MA.W.0006.260518T0646Z-260518T0745Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Special Marine Warning National Weather Service Duluth MN 146 AM CDT Mon May 18 2026 The National Weather Service in Duluth MN has issued a * Special Marine Warning for... Chequamegon Bay-Bayfield to Oak Point WI... Lake Superior west of a line from Saxon Harbor WI to Grand Portage MN beyond 5NM... Oak Point to Saxon Harbor WI... Outer Apostle Islands Beyond 5 NM from Mainland... Port Wing to Sand Island WI... Sand Island to Bayfield WI... * Until 245 AM CDT. * At 146 AM CDT, strong thunderstorms were located along a line extending from Siskwit Bay to 6 nm west of La Pointe to Oak Point, moving northeast at 25 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... Ashland Breakwater Lighthouse, Ironwood Island, Basswood Island, Sand Island, Stockton Island, Madeline Island, Devils Island, Manitou Island, Cat Island, North Twin Island, Meyers Beach, York Island, Eagle Island, La Pointe, Apostle Islands National Lake Shore, Michigan Island, Outer Island, Rocky Island, Raspberry Island, and Oak Point. PRECAUTIONARY/PREPAREDNESS ACTIONS... Move to safe harbor immediately as gusty winds and high waves are expected. && LAT...LON 4666 9095 4667 9094 4670 9089 4676 9092 4687 9081 4690 9080 4693 9086 4692 9095 4684 9110 4682 9118 4683 9119 4724 9080 4717 9049 4699 9024 4660 9085 TIME...MOT...LOC 0646Z 219DEG 27KT 4685 9112 4679 9094 4669 9076 HAIL...0.00IN WIND...>34KTS $$ HA