Coastal Waters Forecast for Ontonagon to Upper Entrance of Portage Canal MI (LSZ242) (Text-Only)
NWS Forecast for: Ontonagon to Upper Entrance of Portage Canal MI (LSZ242)
Issued by: National Weather Service Marquette, MI
Last Update: 1101 PM EDT Mon Sep 1 2025
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Rest Of Tonight: South wind less than 10 knots veering southwest 10 to 15 knots late. Clear. Waves calm to 1 foot.

Tuesday: Southwest wind less than 10 knots veering west by late morning, then backing southwest late. Mostly sunny. A slight chance of showers by late morning. Showers likely and a slight chance of thunderstorms late. Waves building to 1 to 2 feet.

Tuesday Night: Southwest wind 5 to 15 knots veering west 10 to 20 knots after midnight. Showers and a chance of thunderstorms in the evening, then showers and a slight chance of thunderstorms after midnight. Waves building to 2 to 4 feet.

Wednesday: Northwest wind 15 to 20 knots. Cloudy. Showers likely and a slight chance of thunderstorms in the morning, then a chance of showers in the afternoon. Waves building to 3 to 6 feet occasionally to 8 feet.







Zone Forecast: Ontonagon to Upper Entrance of Portage Canal MI (LSZ242)

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