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: 502 PM EDT Thu Jul 16 2026




Late This Afternoon: Northeast wind less than 10 knots. Mostly cloudy. Smoke. Waves calm to 1 foot.

Tonight: East wind less than 10 knots veering southeast late. Mostly cloudy. Smoke through the night. A slight chance of showers and thunderstorms late. Waves calm to 1 foot.

Friday: East wind less than 10 knots. Showers and a chance of thunderstorms through mid morning, then a chance of showers and thunderstorms by late morning. Smoke through the day. Waves building to 1 to 2 feet.

Friday Night: West wind 5 to 15 knots veering northwest 10 to 15 knots after midnight. Gusts up to 22 knots. Mostly cloudy. Showers likely and a chance of thunderstorms in the evening, then a chance of showers and a slight chance of thunderstorms after midnight. Smoke through the night. Waves 1 to 2 feet.

Saturday: Northwest wind 5 to 15 knots. Mostly cloudy in the morning then clearing. Areas of smoke in the morning. Waves 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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