Chart / Forecasts

Munising to Grand Marais MI

LSZ250 · Nearshore Marine Forecast · National Weather Service Marquette MI · Issued 502 PM EDT Sat Oct 3 2026
Small Craft Advisory In Effect Until 2 AM EDT Sunday
Gale Warning In Effect From 2 AM EDT Sunday Through Sunday Evening
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Forecast
Late This Afternoon
South wind 10 to 15 knots with gusts up to 24 knots. Cloudy with a chance of showers. Waves 1 to 2 feet.
Tonight
South wind 15 to 25 knots veering southwest 20 to 25 knots late. Gusts up to 33 knots. Showers through midnight, then a chance of showers late. Waves building to 3 to 5 feet occasionally to 7 feet.
Sunday
Northwest wind 20 to 25 knots with gale force gusts up to 35 knots. Mostly cloudy through early afternoon then becoming mostly sunny. A chance of showers through mid morning. A chance of showers late. Waves building to 7 to 10 feet occasionally to 13 feet.
Sunday Night
Northwest wind 20 to 25 knots. Partly cloudy with a chance of showers. Waves subsiding to 6 to 9 feet occasionally to 11 feet, then building to 7 to 10 feet occasionally to 13 feet.
Monday
Northwest wind 10 to 20 knots with gusts up to 27 knots. Mostly sunny. Waves subsiding to 2 to 3 feet.
Source: National Weather Service Nearshore Marine Forecast (NSH), issued 502 PM EDT Sat Oct 3 2026, valid until Sun, 04 Oct 2026 08:00 UTC. Original text · All zones