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Western Lake Superior

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EDT 08 June 2026

Today Tonight and Tuesday.

Wind east 10 knots increasing to east 15 early this morning then veering to southeast 15 near noon. Wind diminishing to east 10 early this evening then becoming light near noon Tuesday.

Scattered showers tonight and Tuesday morning with a risk of thunderstorms. Fog patches forming near midnight.

Waves

Issued 03:00 AM EDT 08 June 2026
Today Tonight and Tuesday. Waves 0.5 metres or less building to 0.5 to 1 this morning then subsiding to 0.5 or less Tuesday afternoon.

Extended Forecast

Issued 03:00 AM EDT 08 June 2026
Wednesday Wind light increasing to southeast 15 knots in the morning and to southeast 20 late in the day.
Thursday Wind southeast 20 knots.
Friday Wind southwest 20 knots.

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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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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 3:00 AM EDT 8 June 2026 Today Tonight and Tuesday At 3:00 a.m. EDT today ridge located on a line northeast-southwest
over southern Ontario.
By 3:00 a.m. EDT Tuesday ridge located on a line east-west over
Lake Superior.

At 3:00 a.m. EDT today trough located from Manitoba to South Dakota.
By 3:00 a.m. EDT Tuesday trough located on a line north-south over
northern Ontario.

Great Lakes - Lake Superior Area

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Marine Weather for Canada

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