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Eastern Lake Superior

Warnings

Forecast

Marine Forecast

Issued 06:30 PM EDT 19 October 2026

Tonight and Tuesday.

Wind variable 10 knots becoming east 10 near midnight then increasing to southeast 15 early Tuesday morning. Wind increasing to southwest 15 to 20 Tuesday evening.

Waves

Issued 06:30 PM EDT 19 October 2026
Tonight and Tuesday. Waves 0.5 metres building to 0.5 to 1 Tuesday morning and to 1.5 Tuesday evening.

Extended Forecast

Issued 06:30 PM EDT 19 October 2026
Wednesday Wind southwest 15 to 20 knots becoming southwest 15 in the morning then diminishing to light in the afternoon.
Thursday Wind light.
Friday Wind south 20 knots.

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Map of Great Lakes - Lake Superior marine weather areas Royal Island Kenora Airport Sault Ste. Marie Airport Armstrong Airport Caribou Island Marathon Airport Pukaskwa National Park Wawa Airport Thunder Bay Airport Welcome Island Little Flatland Island 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 6:30 PM EDT 19 October 2026 Tonight and Tuesday At 6:30 p.m. EDT tonight high 1029 mb located over Lake Superior.
By 6:30 p.m. EDT Tuesday high 1033 mb located over southern Quebec.

Great Lakes - Lake Superior Area

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