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Western Lake Superior

Warnings

Forecast

Marine Forecast

Issued 06:30 PM EDT 10 October 2026

Tonight and Sunday.

Strong wind warning in effect.

Wind southeast 25 knots veering to south 20 this evening then diminishing to south 15 late overnight. Wind diminishing to variable 10 Sunday afternoon then increasing to northeast 20 Sunday evening.

Waves

Issued 06:30 PM EDT 10 October 2026
Tonight and Sunday. Waves 2 to 3 metres subsiding to 1 to 1.5 near midnight and to 0.5 to 1 early Sunday morning.

Extended Forecast

Issued 06:30 PM EDT 10 October 2026
Monday Wind south 15 knots increasing to northeast 25 in the morning.
Tuesday Wind northeast 20 knots diminishing to light.
Wednesday Wind light becoming north 15 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

Warnings (In effect)

Strong wind warning in effect

Western Lake Superior

Issued 6:30 PM EDT 10 October 2026

'Strong' winds of 20 to 33 knots are occurring or expected to occur in this marine area. Please refer to the latest marine forecasts for further details and continue to monitor the situation through Canadian Coast Guard radio.

Synopsis

Technical Marine Synopsis

Issued 6:30 PM EDT 10 October 2026 Tonight and Sunday At 6:30 p.m. EDT tonight departing high 1032 mb located over
New Hampshire.

At 6:30 p.m. EDT tonight low 995 mb located over northwestern
Minnesota.
By 6:30 p.m. EDT Sunday low 1004 mb located over central Quebec.

Great Lakes - Lake Superior Area

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Marine Weather for Canada

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