587 FZUS73 KMQT 180832 MWSMQT Marine Weather Statement National Weather Service Marquette MI 432 AM EDT Mon May 18 2026 LSZ251-267-180915- 432 AM EDT Mon May 18 2026 A Marine Weather Statement has been issued for the following areas... Grand Marais to Whitefish Point MI... Lake Superior from Grand Marais MI to Whitefish Point MI 5NM off shore to the US/Canadian border... At 431 AM EDT, Doppler radar indicated strong thunderstorms, capable of producing gusty, erratic winds and small hail. These thunderstorms were located along a line extending from 13 nm northwest of Muskallonge State Park to 10 nm northeast of Whitefish Point, moving northeast at 20 knots. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners can expect gusty winds, locally higher waves, and lightning strikes. Boaters should seek safe harbor immediately until these storms pass. Intense lightning is occurring with these storms. If caught on the open water stay below deck if possible, keep away from ungrounded metal objects. && LAT...LON 4680 8484 4679 8489 4682 8596 4715 8551 4689 8486 4681 8483 $$ TAP  737 FZUS73 KMQT 180835 MWSMQT Marine Weather Statement National Weather Service Marquette MI 435 AM EDT Mon May 18 2026 LSZ248-249-265-266-180915- /O.CON.KMQT.MA.W.0004.000000T0000Z-260518T0915Z/ 435 AM EDT Mon May 18 2026 ...A SPECIAL MARINE WARNING REMAINS IN EFFECT UNTIL 515 AM EDT... For the following areas... Huron Islands to Marquette MI... Lake Superior East of a line from Manitou Island to Marquette MI and West of a line from Grand Marais MI to the US/Canadian Border Beyond 5NM from shore... Lake Superior West of Line from Manitou Island to Marquette MI Beyond 5NM from shore... Marquette to Munising MI... At 435 AM EDT, severe thunderstorms were located along a line extending from 12 nm southwest of The Huron Islands to 7 nm southwest of Presque Isle, moving east at 55 knots. HAZARD...Large hail. SOURCE...Radar indicated. IMPACT...Large hail could result in structural damage. Locations impacted include... Little Presque Isle, Granite Island, Stannard Rock, Granite Point, and Presque Isle. PRECAUTIONARY/PREPAREDNESS ACTIONS... Move to safe harbor until hazardous weather passes. Frequent lightning is occurring with these storms. If caught on the open water stay below deck if possible, keep away from ungrounded metal objects. && LAT...LON 4705 8632 4649 8741 4681 8772 4685 8786 4732 8698 TIME...MOT...LOC 0835Z 270DEG 54KT 4676 8810 4653 8753 HAIL...>.75IN WIND...<34KTS $$ TAP  623 FZUS73 KMQT 180854 MWSMQT Marine Weather Statement National Weather Service Marquette MI 454 AM EDT Mon May 18 2026 LSZ249-180903- /O.CAN.KMQT.MA.W.0004.000000T0000Z-260518T0915Z/ 454 AM EDT Mon May 18 2026 ...THE SPECIAL MARINE WARNING IS CANCELLED... The affected areas were... Marquette to Munising MI... The thunderstorms are now expected to not impact the area and are no longer a significant threat to boaters. && LAT...LON 4678 8684 4657 8725 4658 8728 4691 8762 4713 8734 4716 8728 TIME...MOT...LOC 0853Z 218DEG 48KT 4691 8750 4656 8715 $$ LSZ248-265-266-180915- /O.CON.KMQT.MA.W.0004.000000T0000Z-260518T0915Z/ 454 AM EDT Mon May 18 2026 ...A SPECIAL MARINE WARNING REMAINS IN EFFECT UNTIL 515 AM EDT... For the following areas... Huron Islands to Marquette MI... Lake Superior East of a line from Manitou Island to Marquette MI and West of a line from Grand Marais MI to the US/Canadian Border Beyond 5NM from shore... Lake Superior West of Line from Manitou Island to Marquette MI Beyond 5NM from shore... At 453 AM EDT, severe thunderstorms were located along a line extending from 8 nm northeast of Granite Point to near Shot Point, moving northeast at 50 knots. HAZARD...Wind gusts 34 knots or greater and large hail. SOURCE...Radar indicated. IMPACT...Small craft could be damaged in briefly higher winds and suddenly higher waves. Large hail could result in structural damage. Locations impacted include... Granite Island. PRECAUTIONARY/PREPAREDNESS ACTIONS... Move to safe harbor until hazardous weather passes. Frequent lightning is occurring with these storms. If caught on the open water stay below deck if possible, keep away from ungrounded metal objects. && LAT...LON 4678 8684 4657 8725 4658 8728 4691 8762 4713 8734 4716 8728 TIME...MOT...LOC 0853Z 218DEG 48KT 4691 8750 4656 8715 HAIL...>.75IN WIND...>34KTS $$ TAP