Coastal Waters Forecast for Lake Superior East of a line from Manitou Island to Marquette MI and West of a line from Grand Marais MI to the US/Canadian Border Beyond 5NM from shore (LSZ266) (Text-Only)
NWS Forecast for: Lake Superior East of a line from Manitou Island to Marquette MI and West of a line from Grand Marais MI to the US/Canadian Border Beyond 5NM from shore (LSZ266)
Issued by: National Weather Service Marquette, MI
Last Update: 401 AM EDT Wed Sep 24 2025


Early This Morning: North winds 10 to 20 knots. Waves 1 to 3 feet.

Today: North winds 10 to 20 knots diminishing to 5 to 15 knots in the afternoon. Waves subsiding to calm to 2 feet.

Tonight: North winds 5 to 15 knots backing northwest after midnight. Waves calm to 2 feet.

Thursday: West winds 5 to 15 knots backing southwest in the afternoon. Waves building to 1 to 3 feet.

Thursday Night: Southwest winds 10 to 20 knots becoming north 15 to 25 knots after midnight. Waves 1 to 3 feet.

Friday: Northeast winds 10 to 20 knots diminishing to 5 to 15 knots by mid afternoon. Waves subsiding to calm to 2 feet.

Friday Night: Southeast winds 5 to 15 knots becoming south 10 to 20 knots after midnight. Waves calm to 2 feet.

Saturday: West winds 10 to 20 knots. Waves building to 1 to 3 feet, then subsiding to calm to 2 feet.

Sunday: Southwest winds 10 to 20 knots becoming south 5 to 15 knots. Waves calm to 2 feet.







Zone Forecast: Lake Superior East of a line from Manitou Island to Marquette MI and West of a line from Grand Marais MI to the US/Canadian Border Beyond 5NM from shore (LSZ266)

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