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Western Lake Superior

Warnings

Forecast

Marine Forecast

Issued 10:30 AM EDT 24 March 2025

Today Tonight and Tuesday.

Wind north 20 knots diminishing to north 15 near midnight. Wind north 15 Tuesday.

Snow changing to scattered flurries this evening and ending Tuesday morning. Visibility 1 mile or less in precipitation.

Waves

Issued 10:30 AM EDT 24 March 2025
Today Tonight and Tuesday. Waves 1 to 1.5 metres subsiding to 0.5 to 1 late overnight.

Extended Forecast

Issued 03:00 AM EDT 24 March 2025
Wednesday Wind northeast 15 knots diminishing to light in the morning then becoming southwest 15 late in the day.
Thursday Wind west 25 knots diminishing to north 15 late in the day.
Friday Wind east 15 knots increasing to east 20 late in the day.

Ice Forecast*

Issued 12:00 PM EDT 24 March 2025 Today Tonight and Tuesday 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 24 March 2025 Today Tonight and Tuesday

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 10:30 AM EDT 24 March 2025 Today Tonight and Tuesday At 10:30 a.m. EDT today low 993 mb located over North Channel.
By 10:30 a.m. EDT Tuesday low 1005 mb located over southern Quebec.

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

Great Lakes - Lake Superior Area

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Marine Weather for Canada

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