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Western Lake Superior

Warnings

Forecast

Marine Forecast

Issued 06:30 PM EDT 27 March 2025

Tonight and Friday.

Wind light increasing to southeast 15 knots early Friday morning then backing to east 20 near noon Friday. Wind increasing to northeast 30 Friday evening.

Snow overnight and Friday. Visibility 1 mile or less in snow.

Waves

Issued 06:30 PM EDT 27 March 2025
Tonight and Friday. Waves 0.5 to 1 metre subsiding to 0.5 or less this evening then building to 0.5 to 1 Friday morning. Waves building to 1.5 Friday afternoon and to 2 Friday evening.

Extended Forecast

Issued 06:30 PM EDT 27 March 2025
Saturday Wind northeast 25 knots.
Sunday Wind east 20 knots backing to northeast 25.
Monday Wind northeast 25 knots diminishing to north 15 late in the day.

Ice Forecast*

Issued 12:00 PM EDT 27 March 2025 Today Tonight and Friday Open water except 2 tenths thick lake ice along parts of the shores. Consolidated thick lake ice in Black Bay, Nipigon Bay, Chequamegon Bay and eastern Thunder Bay.

*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 Slate Island - 45136 Lake Of the Woods - 45148 Kenora Airport Royal Island Armstrong Airport Caribou Island Marathon Airport Pukaskwa National Park Thunder Bay Airport Welcome Island Little Flatland Island Sault Ste. Marie Airport Wawa Airport
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Ice Conditions

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

Ice Forecasts

Issued 12:00 PM EDT 27 March 2025 Today Tonight and Friday

Ice Coverage

Open water except 2 tenths thick lake ice along parts of the shores.
Consolidated thick lake ice in Black Bay, Nipigon Bay, Chequamegon
Bay and eastern Thunder Bay.

Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 6:30 PM EDT 27 March 2025 Tonight and Friday At 6:30 p.m. EDT tonight cold front located on a line
northeast-southwest over Lake Nipissing.
By 6:30 p.m. EDT Friday departing cold front located on a line
northeast-southwest over the Maritimes.

At 6:30 p.m. EDT tonight ridge located on a line northwest-southeast
over northwestern Ontario.
By 6:30 p.m. EDT Friday ridge located on a line northwest-southeast
over central James Bay.

By 6:30 p.m. EDT Friday approaching low 996 mb located over
southern Minnesota.

Great Lakes - Lake Superior Area

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Marine Weather for Canada

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