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| NWS Forecast for: 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 (LSZ263) Issued by: National Weather Service Marquette, MI Last Update: 1001 AM EDT Thu Sep 18 2025 | |
Rest Of Today: Northeast winds 10 to 20 knots increasing to 15 to 25 knots late. A slight chance of showers. Waves 3 to 6 feet occasionally to 8 feet. Tonight: East winds 15 to 25 knots diminishing to 10 to 20 knots after midnight. A slight chance of showers and thunderstorms. Waves subsiding to 2 to 4 feet. Friday: East winds 15 to 25 knots. A slight chance of showers. Waves building to 3 to 6 feet occasionally to 8 feet. Friday Night: East winds 15 to 25 knots diminishing to 10 to 20 knots after midnight. A chance of showers and a slight chance of thunderstorms. Waves subsiding to 2 to 4 feet. Saturday: Southeast winds 10 to 20 knots. Showers likely and a slight chance of thunderstorms. Waves building to 3 to 5 feet occasionally to 7 feet. Saturday Night: Southeast winds 5 to 15 knots veering south after midnight. Showers likely through midnight. A chance of showers after midnight. Waves subsiding to 1 to 3 feet. Sunday: South winds 5 to 15 knots. A chance of showers. Waves subsiding to calm to 2 feet. Monday: Southwest winds 5 to 15 knots veering north. Waves calm to 2 feet. | |
| Zone Forecast: 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 (LSZ263) | |
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