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Eastern Lake Superior

Warnings

Forecast

Marine Forecast

Issued 06:30 PM EDT 27 July 2026

Tonight and Tuesday.

Wind northwest 10 knots increasing to north 15 this evening then backing to northwest 15 near noon Tuesday.

Scattered showers this evening with a risk of thunderstorms. Fog patches dissipating late overnight.

Waves

Issued 06:30 PM EDT 27 July 2026
Tonight and Tuesday. Waves 0.5 metres or less building to 0.5 to 1 this evening.

Extended Forecast

Issued 06:30 PM EDT 27 July 2026
Wednesday Wind light.
Thursday Wind light.
Friday Wind light.

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Map of Great Lakes - Lake Superior marine weather areas Kenora Airport Pukaskwa National Park Royal Island Armstrong Airport Caribou Island Marathon Airport Thunder Bay Airport Welcome Island Little Flatland Island Sault Ste. Marie Airport Wawa Airport Slate Island - 45136 Lake Of the Woods - 45148
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buoy Buoy
land station Land Station
Ice Conditions

*Ice Forecast and Warnings also apply to U.S. waters

Ice Forecasts

Issued 12:00 PM EDT 17 May 2026 Forecasts have ended for the season.
Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 6:30 PM EDT 27 July 2026 Tonight and Tuesday At 6:30 p.m. EDT tonight low 1002 mb located over eastern Wisconsin.
By 6:30 p.m. EDT Tuesday low 999 mb located over eastern Lake
Ontario.

At 6:30 p.m. EDT tonight ridge located on a line north-south over
northwestern Ontario.
By 6:30 p.m. EDT Tuesday ridge located on a line north-south over
Lake Superior.

Great Lakes - Lake Superior Area

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Marine Weather for Canada

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