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Eastern Lake Superior

Forecast

Marine Forecast

Issued 03:00 AM EDT 26 October 2026

Today Tonight and Tuesday.

Strong wind warning in effect.

Wind north 20 knots diminishing to north 15 early this morning and to north 10 near noon. Wind veering to northeast 10 this evening then to east 10 overnight. Wind increasing to southeast 15 Tuesday morning and to southeast 20 Tuesday afternoon.

Scattered showers Tuesday evening.

Waves

Issued 03:00 AM EDT 26 October 2026
Today Tonight and Tuesday. Waves 1.5 metres subsiding to 1 early this morning and to 0.5 or less this afternoon. Waves building to 0.5 to 1 near noon Tuesday and to 1.5 Tuesday evening.

Extended Forecast

Issued 03:00 AM EDT 26 October 2026
Wednesday Wind south 20 to 25 knots diminishing to southwest 15 in the morning.
Thursday Wind southwest 20 knots veering to northwest 15.
Friday Wind northwest 15 knots diminishing to light.

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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

Eastern Lake Superior

Issued 03:00 AM EDT 26 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 3:00 AM EDT 26 October 2026 Today Tonight and Tuesday At 3:00 a.m. EDT today departing ridge located on a line
northeast-southwest over West Virginia.

At 3:00 a.m. EDT today cold front located on a line
northeast-southwest over Lake Nipissing.
By 3:00 a.m. EDT Tuesday departing cold front located off the East
Coast of the U.S.

At 3:00 a.m. EDT today high 1040 mb located over southern
Saskatchewan.
By 3:00 a.m. EDT Tuesday ridge located on a line northwest-southeast
over Ontario.

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