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Eastern Lake Superior

Warnings

Forecast

Marine Forecast

Issued 06:30 PM EDT 13 April 2026

Tonight and Tuesday.

Wind light becoming northeast 15 knots late overnight then diminishing to variable 10 Tuesday afternoon.

Drizzle beginning near midnight changing to showers overnight then to drizzle Tuesday evening. Fog patches.

Waves

Issued 06:30 PM EDT 13 April 2026
Tonight and Tuesday. Waves 0.5 metres or less building to 0.5 to 1 late overnight then subsiding to 0.5 or less Tuesday evening.

Extended Forecast

Issued 06:30 PM EDT 13 April 2026
Wednesday Wind light.
Thursday Wind light.
Friday Wind northeast 15 knots veering to southeast 20 late in the day.

Ice Forecast*

Issued 12:00 PM EDT 13 April 2026 Today Tonight and Tuesday Open water except 2 tenths thick lake ice along parts of the southern shores. Consolidated rotten thick lake ice along parts of the southern shore.

*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 13 April 2026 Today Tonight and Tuesday

Ice Coverage

Open water except 2 tenths thick lake ice along parts of the
southern shores. Consolidated rotten thick lake ice along parts of
the southern shore.

Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 6:30 PM EDT 13 April 2026 Tonight and Tuesday At 6:30 p.m. EDT tonight ridge located over northern Ontario.
By 6:30 p.m. EDT Tuesday departing ridge located on a line
northwest-southeast over northern Quebec.

At 6:30 p.m. EDT tonight low 999 mb located over eastern Nebraska.
By 6:30 p.m. EDT Tuesday low 1005 mb located over eastern Ontario.

Great Lakes - Lake Superior Area

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