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Southern Georgian Bay

Warnings

Forecast

Marine Forecast

Issued 06:30 PM EDT 20 March 2025

Tonight and Friday.

Wind northwest 25 knots diminishing to northwest 15 near midnight and to light early Friday morning. Wind increasing to southwest 15 late Friday morning and to southwest 20 Friday evening.

Waves

Issued 06:30 PM EDT 20 March 2025
Tonight and Friday. Over open water waves 2 metres subsiding to 0.5 to 1 late overnight.

Extended Forecast

Issued 06:30 PM EDT 20 March 2025
Saturday Wind southwest 20 knots veering to northwest 25 in the morning then diminishing to northwest 15 in the afternoon.
Sunday Wind light increasing to southeast 25 knots late in the day.
Monday Wind southeast 25 knots diminishing to southwest 15.

Ice Forecast*

Issued 12:00 PM EDT 20 March 2025 Today Tonight and Friday Open water except 8 tenths medium lake ice including 1 tenth thick lake ice along the northeastern shores. Consolidated thick lake ice along the northeastern shores.

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

 

[ Canadian Ice Service ]

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Map of Great Lakes - Lake Huron marine weather areas Port Stanley - 45132 Prince Edward Point - 45135 Georgian Bay - 45137 Grimsby - 45139 Port Colborne - 45142 South Georgian Bay - 45143 Lake St Clair - 45147 South Lake Huron - 45149 Lake Simcoe - 45151 Lake Nipissing - 45152 North Channel - 45154 Ajax - 45159 Sault Ste. Marie Airport Killarney Greater Sudbury Airport North Bay Airport Gore Bay-Manitoulin Airport Great Duck Island Brockville Grenadier Island Kingston Airport Collingwood Lagoon City Muskoka Airport Parry Sound Harbour Lake Simcoe Regional Airport Wiarton Airport Western Islands Cove Island Goderich Sarnia Chris Hadfield Airport Tobermory Harrow AAFC Long Point Port Weller St. Catharines / Niagara District Airport Southeast Shoal Vineland Station Welland-Pelham Windsor Airport Port Colborne Erieau Point Pelee Burlington Lift Bridge Cobourg Hamilton Munro Int'l Airport Oshawa Executive Airport Point Petre Toronto City Centre Airport CFB Trenton Peterborough Municipal Airport
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Ice Conditions

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

Ice Forecasts

Issued 12:00 PM EDT 20 March 2025 Today Tonight and Friday

Ice Coverage

Open water except 8 tenths medium lake ice including 1 tenth thick
lake ice along the northeastern shores. Consolidated thick lake ice
along the northeastern shores.

Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 6:30 PM EDT 20 March 2025 Tonight and Friday At 6:30 p.m. EDT tonight departing trough located on a line
north-south over Ottawa.

At 6:30 p.m. EDT tonight ridge located on a line north-south over
Sault Ste. Marie.
By 6:30 p.m. EDT Friday ridge located on a line northeast-southwest
over Ottawa.

At 6:30 p.m. EDT tonight trough located on a line
northeast-southwest over Lake of the Woods.
By 10:30 a.m. EDT Friday trough located on a line
northeast-southwest over Sault Ste. Marie.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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