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Government of Canada / Gouvernement du Canada

Eastern Lake Superior

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EDT 19 March 2026

Today Tonight and Friday.

Wind northwest 15 knots veering to north 15 early this morning then diminishing to light near noon. Wind increasing to southeast 15 this evening and to southeast 25 near midnight. Wind veering to south 25 Friday morning then diminishing to north 20 near noon Friday. Wind diminishing to northwest 10 Friday afternoon then backing to west 10 Friday evening.

Scattered flurries ending early this morning. Snow beginning near midnight with a risk of freezing rain and changing to scattered showers or scattered flurries Friday morning and ending Friday morning. Visibility 1 mile or less in snow.

Waves

Issued 03:00 AM EDT 19 March 2026
Today Tonight and Friday. Over open water waves 1 to 1.5 metres.

Extended Forecast

Issued 03:00 AM EDT 19 March 2026
Saturday Wind light increasing to east 15 knots in the afternoon and to northeast 25 late in the day.
Sunday Wind northeast 25 knots diminishing to north 15 late in the day.
Monday Wind light becoming south 15 knots late in the day.

Ice Forecast*

Issued 12:00 PM EDT 18 March 2026 Today Tonight and Thursday 1 tenth thick lake ice except 9 tenths thin lake ice including 4 tenths thick lake ice along parts of the shores. Consolidated 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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Ice Conditions

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

Ice Forecasts

Issued 12:00 PM EDT 18 March 2026 Today Tonight and Thursday

Ice Coverage

1 tenth thick lake ice except 9 tenths thin lake ice including 4
tenths thick lake ice along parts of the shores. Consolidated thick
lake ice along parts of the southern shore.

Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 3:00 AM EDT 19 March 2026 Today Tonight and Friday At 3:00 a.m. EDT today low 1010 mb located over northeastern
Ontario.
By 3:00 a.m. EDT Friday departing low 1013 mb located over Quebec.

At 3:00 a.m. EDT today ridge located on a line north-south over
eastern Manitoba.
By 3:00 a.m. EDT Friday ridge located on a line north-south over
eastern Ontario.

By 3:00 a.m. EDT Friday low 1005 mb located over northwestern
Ontario.

Great Lakes - Lake Superior Area

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