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Eastern Lake Superior

Warnings

Forecast

Marine Forecast

Issued 06:30 PM EDT 29 April 2025

Tonight and Wednesday.

Wind northwest 20 knots veering to north 15 this evening then diminishing to east 10 near midnight. Wind increasing to southeast 15 Wednesday morning and to southeast 20 Wednesday afternoon.

Waves

Issued 06:30 PM EDT 29 April 2025
Tonight and Wednesday. Waves 2 metres subsiding to 1 near midnight and to 0.5 or less late overnight. Waves building to 0.5 to 1 near noon Wednesday and to 1 to 1.5 Wednesday evening.

Extended Forecast

Issued 06:30 PM EDT 29 April 2025
Thursday Wind southeast 20 knots diminishing to light late in the day.
Friday Wind northeast 15 knots backing to north 20.
Saturday Wind northwest 15 knots backing to southwest 15.

Ice Forecast*

Issued 12:00 PM EDT 29 April 2025 Today Tonight and Wednesday Open water.

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

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

Ice Forecasts

Issued 12:00 PM EDT 29 April 2025 Today Tonight and Wednesday

Ice Coverage

Open water.

Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 3:00 AM EDT 30 April 2025 Today Tonight and Thursday At 3:00 a.m. EDT today departing trough located on a line
northeast-southwest over eastern Ontario.

At 3:00 a.m. EDT today high 1025 mb located over Lake Superior.
By 3:00 a.m. EDT Thursday high 1024 mb located over western Quebec.

By 3:00 a.m. EDT Thursday approaching low 1005 mb located over
Missouri.

Great Lakes - Lake Superior Area

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Marine Weather for Canada

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