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Government of Canada / Gouvernement du Canada

Southern Georgian Bay

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EDT 19 March 2026

Today Tonight and Friday.

Wind southwest 15 knots veering to west 15 early this morning then diminishing to west 10 early this evening. Wind becoming light late this evening then increasing to southeast 20 Friday morning. Wind diminishing to west 10 near noon Friday then increasing to northwest 15 Friday afternoon. Wind diminishing to light Friday evening.

Periods of snow ending early this morning. Rain beginning overnight with a risk of freezing rain and changing to scattered showers near noon Friday and ending Friday afternoon. Visibility 1 mile or less in precipitation.

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 early this evening then building to 1 Friday morning. Waves subsiding to 0.5 or less Friday afternoon.

Extended Forecast

Issued 03:00 AM EDT 19 March 2026
Saturday Wind light.
Sunday Wind light increasing to northeast 20 knots.
Monday Wind north 15 knots.

Ice Forecast*

Issued 12:00 PM EDT 18 March 2026 Today Tonight and Thursday 2 tenths thick lake ice except 9 tenths thick lake ice in the northern section. Consolidated thick lake ice along parts of the 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

2 tenths thick lake ice except 9 tenths thick lake ice in the
northern section. Consolidated thick lake ice along parts of the
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 Huron Area

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Marine Weather for Canada

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