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Eastern Lake Superior

Forecast

Marine Forecast

Issued 10:30 AM EDT 24 April 2026

Today Tonight and Saturday.

Wind southeast 30 knots diminishing to southeast 15 early this evening and to east 10 near midnight. Wind becoming light near noon Saturday.

Scattered showers changing to rain near noon then to scattered showers near midnight and ending Saturday afternoon. Fog patches forming near midnight.

Waves

Issued 10:30 AM EDT 24 April 2026
Today Tonight and Saturday. Waves 2 to 3 metres subsiding to 2 this afternoon and to 0.5 to 1 this evening. Waves subsiding to 0.5 or less late overnight.

Extended Forecast

Issued 03:00 AM EDT 24 April 2026
Sunday Wind light.
Monday Wind southeast 15 knots increasing to southeast 25 late in the day.
Tuesday Wind southeast 30 knots diminishing to northwest 25.

Ice Forecast*

Issued 12:00 PM EDT 23 April 2026 Today Tonight and Friday Open water except 2 tenths thick lake ice along parts of the southern and eastern shores.

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

 

[ Canadian Ice Service ]

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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 23 April 2026 Today Tonight and Friday

Ice Coverage

Open water except 2 tenths thick lake ice along parts of the
southern and eastern shores.

Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 10:30 AM EDT 24 April 2026 Today Tonight and Saturday At 10:30 a.m. EDT today ridge located on a line north-south over
Kingston.
By 10:30 a.m. EDT Saturday ridge located on a line north-south
over New Hampshire.

At 10:30 a.m. EDT today low 995 mb located over western Manitoba.
By 10:30 a.m. EDT Saturday low 1012 mb located over southern
Saskatchewan.

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