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Western Lake Superior

Warnings

Forecast

Marine Forecast

Issued 10:30 AM EST 06 March 2026

Today Tonight and Saturday.

Wind southeast 15 knots diminishing to southeast 10 this afternoon then backing to northeast 10 this evening. Wind increasing to north 15 late overnight and to north 20 early Saturday morning. Wind backing to northwest 15 near noon Saturday then to southwest 15 Saturday evening.

Periods of drizzle with a risk of freezing drizzle late this morning changing to periods of rain this evening then to periods of snow Saturday morning and ending Saturday afternoon. Fog patches forming this afternoon and dissipating overnight. Visibility 1 mile or less in fog patches and in snow.

Waves

Issued 10:30 AM EST 06 March 2026
Today Tonight and Saturday. Over open water waves 1 metre subsiding to 0.5 early this evening then building to 0.5 to 1 early Saturday morning. Waves building to 1 to 1.5 near noon Saturday then subsiding to 0.5 to 1 Saturday afternoon.

Extended Forecast

Issued 03:00 AM EST 06 March 2026
Sunday Wind southwest 15 knots increasing to southwest 30 in the morning then diminishing to west 20 late in the day.
Monday Wind southwest 20 knots veering to northwest 15.
Tuesday Wind north 20 knots.

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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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land station Land Station
Ice Conditions

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

Ice Forecasts

Issued 12:00 PM EDT 16 May 2025 Forecasts have ended for the season.
Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 10:30 AM EST 6 March 2026 Today Tonight and Saturday At 10:30 a.m. EST today departing ridge located on a line
northwest-southeast over central Quebec.

At 10:30 a.m. EST today trough located from Kansas to Lake of
the Woods.
By 10:30 a.m. EST Saturday trough located on a line
northeast-southwest over northeastern Ontario.

By 10:30 a.m. EST Saturday ridge located on a line north-south
over northwestern Ontario.

Great Lakes - Lake Superior Area

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