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Government of Canada / Gouvernement du Canada

Eastern Lake Ontario

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EDT 19 March 2026

Today Tonight and Friday.

Wind south 15 knots veering to southwest 15 near noon then diminishing to west 10 this evening. Wind becoming light near midnight then increasing to southeast 15 Friday morning. Wind veering to south 20 near noon Friday then diminishing to north 15 Friday evening.

Periods of snow changing to scattered showers or scattered flurries near noon and ending this evening. Snow Friday morning with a risk of freezing rain. Rain Friday afternoon. Scattered showers Friday evening. Visibility as low as 1 mile in snow.

Waves

Issued 03:00 AM EDT 19 March 2026
Today Tonight and Friday. Over open water waves 0.5 to 1 metre subsiding to 0.5 or less near midnight then building to 1 near noon Friday. Waves subsiding to 0.5 Friday evening.

Extended Forecast

Issued 03:00 AM EDT 19 March 2026
Saturday Wind light.
Sunday Wind light becoming northeast 15 knots late in the day.
Monday Wind north 15 knots backing to west 20 late in the day.

Ice Forecast*

Issued 12:00 PM EDT 18 March 2026 Today Tonight and Thursday Open water except 2 tenths thick lake ice in the extreme northeastern section. Consolidated rotten thick lake ice along parts of the shore and in the Bay of Quinte.

*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

Open water except 2 tenths thick lake ice in the extreme
northeastern section. Consolidated rotten thick lake ice along parts
of the shore and in the Bay of Quinte.

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 Huron Area

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Marine Weather for Canada

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