312 WHUS53 KMQT 301509 SMWMQT LSZ266-267-301615- /O.NEW.KMQT.MA.W.0018.260630T1509Z-260630T1615Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Special Marine Warning National Weather Service Marquette MI 1109 AM EDT Tue Jun 30 2026 The National Weather Service in Marquette has issued a * Special Marine Warning for... Lake Superior East of a line from Manitou Island to Marquette MI and West of a line from Grand Marais MI to the US/Canadian Border Beyond 5NM from shore... Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off shore to the US/Canadian border... * Until 1215 PM EDT. * At 1109 AM EDT, a severe thunderstorm was located 33 nm north of Muskallonge State Park, or 35 nm southeast of The Eastern Lake Superior Buoy, moving northeast at 15 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. * The severe thunderstorm will remain over mainly open waters. PRECAUTIONARY/PREPAREDNESS ACTIONS... Move to safe harbor until hazardous weather passes. && LAT...LON 4705 8617 4722 8628 4734 8597 4717 8555 4716 8555 TIME...MOT...LOC 1509Z 234DEG 16KT 4722 8583 HAIL...>.75IN WIND...40KTS $$ jp  669 WHUS53 KMQT 301530 SMWMQT LSZ266-301615- /O.NEW.KMQT.MA.W.0019.260630T1530Z-260630T1615Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Special Marine Warning National Weather Service Marquette MI 1130 AM EDT Tue Jun 30 2026 The National Weather Service in Marquette has issued a * Special Marine Warning for... Lake Superior East of a line from Manitou Island to Marquette MI and West of a line from Grand Marais MI to the US/Canadian Border Beyond 5NM from shore... * Until 1215 PM EDT. * At 1130 AM EDT, a severe thunderstorm was located 17 nm south of The Eastern Lake Superior Buoy, moving northeast at 50 knots. HAZARD...Wind gusts to 40 knots and large hail. SOURCE...Radar. IMPACT...Small craft could be damaged in briefly higher winds and suddenly higher waves. Large hail could result in structural damage. * The severe thunderstorm will remain over mainly open waters. PRECAUTIONARY/PREPAREDNESS ACTIONS... Boaters should seek safe harbor immediately until this storm passes. Wind gusts to 40 knots, large hail, high waves, dangerous lightning, and heavy rain are possible with this storm. && LAT...LON 4736 8602 4718 8635 4709 8681 4711 8691 4730 8680 4751 8639 TIME...MOT...LOC 1530Z 234DEG 49KT 4727 8665 HAIL...>.75IN WIND...40KTS $$ jp  621 WHUS51 KBUF 301544 SMWBUF LOZ045-065-SLZ022-024-301745- /O.NEW.KBUF.MA.W.0047.260630T1544Z-260630T1745Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED Special Marine Warning National Weather Service Buffalo NY 1144 AM EDT Tue Jun 30 2026 The National Weather Service in Buffalo has issued a * Special Marine Warning for... Lake Ontario from Gallo Island to Cape Vincent... The Saint Lawrence River from Cape Vincent to Saint Regis... * Until 145 PM EDT. * At 1141 AM EDT, a strong thunderstorm was located over mainly rural areas of Arden Ontario, moving southeast 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... Tibbets Point, Alexandria Bay, Tucker Terrace, Wellesley Island, St. Lawrence River, Cape Vincent, and Clayton. PRECAUTIONARY/PREPAREDNESS ACTIONS... Move to safe harbor immediately as gusty winds and high waves are expected. && LAT...LON 4484 7529 4452 7574 4444 7576 4439 7584 4437 7578 4433 7582 4412 7627 4411 7625 4416 7611 4414 7604 4392 7639 4400 7651 4420 7631 4422 7620 4429 7615 4435 7599 4484 7531 4500 7487 4497 7488 TIME...MOT...LOC 1541Z 304DEG 34KT 4474 7692 HAIL...0.00IN WIND...>34KTS $$ HSK  967 FZUS73 KMQT 301546 MWSMQT Marine Weather Statement National Weather Service Marquette MI 1146 AM EDT Tue Jun 30 2026 LSZ266-267-301615- /O.CON.KMQT.MA.W.0018.000000T0000Z-260630T1615Z/ 1146 AM EDT Tue Jun 30 2026 ...A SPECIAL MARINE WARNING REMAINS IN EFFECT UNTIL 1215 PM EDT... For the following areas... Lake Superior East of a line from Manitou Island to Marquette MI and West of a line from Grand Marais MI to the US/Canadian Border Beyond 5NM from shore... Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off shore to the US/Canadian border... At 1146 AM EDT, a severe thunderstorm was located 38 nm north of Muskallonge State Park, or 40 nm east of The Eastern Lake Superior Buoy, moving northeast at 15 knots. HAZARD...Wind gusts to 40 knots and large hail. SOURCE...Radar indicated. IMPACT...Small craft could be damaged in briefly higher winds and suddenly higher waves. Large hail could result in structural damage. The severe thunderstorm will remain over mainly open waters. PRECAUTIONARY/PREPAREDNESS ACTIONS... Boaters should seek safe harbor immediately until this storm passes. Wind gusts to 40 knots, large hail, high waves, dangerous lightning, and heavy rain are possible with this storm. && LAT...LON 4713 8599 4728 8614 4734 8597 4717 8555 4716 8555 TIME...MOT...LOC 1546Z 234DEG 16KT 4732 8563 HAIL...>.75IN WIND...40KTS $$ jp