Coastal Waters Forecast for Black River To Ontonagon MI (LSZ241) (Text-Only)
NWS Forecast for: Black River To Ontonagon MI (LSZ241)
Issued by: National Weather Service Marquette, MI
Last Update: 502 PM EDT Wed Sep 17 2025




Late This Afternoon: Variable wind less than 10 knots. Partly cloudy. Waves calm to 1 foot.

Tonight: Northeast wind 5 to 15 knots. Partly cloudy through late evening then becoming mostly cloudy. A slight chance of showers late. Waves building to 2 to 3 feet.

Thursday: Northeast wind 10 to 20 knots. Cloudy. A slight chance of showers through mid morning, then a chance of showers by late morning. A slight chance of showers late. Waves building to 3 to 5 feet occasionally to 7 feet.

Thursday Night: East wind 10 to 20 knots. Cloudy. A slight chance of showers in the evening, then a slight chance of showers and thunderstorms after midnight. Waves subsiding to 2 to 3 feet.

Friday: East wind 10 to 15 knots. Mostly cloudy. A chance of showers and a slight chance of thunderstorms in the morning, then a slight chance of showers in the afternoon. Waves subsiding to 1 to 2 feet, then building to 2 to 4 feet.







Zone Forecast: Black River To Ontonagon MI (LSZ241)

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