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 Thu Sep 18 2025
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Late This Afternoon: Northeast wind 15 to 20 knots. Mostly cloudy with a slight chance of showers. Waves 3 to 5 feet occasionally to 7 feet.

Tonight: East wind 10 to 20 knots. Cloudy with a slight chance of showers and thunderstorms. Waves subsiding to 1 to 2 feet.

Friday: East wind 10 to 15 knots with gusts up to 22 knots. Mostly cloudy. A chance of showers and a slight chance of thunderstorms through early afternoon, then a slight chance of showers and thunderstorms late. Waves building to 2 to 4 feet.

Friday Night: East wind 10 to 15 knots veering southeast after midnight. Gusts up to 22 knots. Mostly cloudy. A chance of showers and a slight chance of thunderstorms in the evening, then showers likely and a chance of thunderstorms after midnight. Waves subsiding to 1 to 2 feet.

Saturday: Southeast wind less than 10 knots. Mostly cloudy. A chance of showers and a slight chance of thunderstorms in the morning, then showers likely and a slight chance of thunderstorms in the afternoon. Waves calm to 1 foot.







Zone Forecast: Black River To Ontonagon MI (LSZ241)

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