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Coastal Waters Forecast for Portage Lake to Huron Island MI to Lower Entrance of Portage Canal To Huron Islands MI Including Keweenaw and Huron Bays (LSZ247) (Text-Only)
NWS Forecast for: Portage Lake to Huron Island MI to Lower Entrance of Portage Canal To Huron Islands MI Including Keweenaw and Huron Bays (LSZ247)
Issued by: National Weather Service Marquette, MI
Last Update: 1101 PM EDT Sat Aug 23 2025		Print



Rest Of Tonight: West wind 10 to 20 knots. Mostly cloudy with a chance of showers. A slight chance of waterspouts by midnight. A chance of waterspouts late. Waves 2 to 3 feet subsiding to 1 to 2 feet, then building to 2 to 3 feet.

Sunday: Northwest wind 15 to 20 knots. Cloudy with a chance of showers. A chance of waterspouts. Waves 2 to 3 feet.

Sunday Night: Northwest wind 10 to 20 knots. Mostly cloudy. A chance of showers in the evening, then a slight chance of showers after midnight. A chance of waterspouts in the evening, then a slight chance of waterspouts after midnight. Waves subsiding to 1 to 2 feet, then building to 2 to 3 feet.

Monday: Northwest wind 10 to 20 knots. Partly cloudy. Waves subsiding to 1 to 2 feet.






Zone Forecast: Portage Lake to Huron Island MI to Lower Entrance of Portage Canal To Huron Islands MI Including Keweenaw and Huron Bays (LSZ247)

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