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Southern Georgian Bay

Warnings

Forecast

Marine Forecast

Issued 06:30 PM EDT 23 March 2025

Tonight and Monday.

Wind southeast 15 knots increasing to southeast 25 this evening and to southeast 30 late overnight. Wind diminishing to southwest 20 Monday morning then veering to west 25 Monday evening.

Snow beginning near midnight changing to scattered showers or scattered flurries Monday morning. Visibility 1 mile or less in precipitation.

Waves

Issued 06:30 PM EDT 23 March 2025
Tonight and Monday. Over open water waves 0.5 to 1 metre building to 1.5 near midnight.

Extended Forecast

Issued 06:30 PM EDT 23 March 2025
Tuesday Wind west 25 knots diminishing to northwest 15 in the morning then backing to west 15 to 20 in the afternoon.
Wednesday Wind north 15 to 20 knots backing to northwest 15.
Thursday Wind west 15 knots backing to southwest 20.

Ice Forecast*

Issued 12:00 PM EDT 23 March 2025 Today Tonight and Monday Open water except 5 tenths medium lake ice including 1 tenth thick lake ice in the northeastern section. 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 Erie and Lake Ontario 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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land station Land Station
Ice Conditions

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

Ice Forecasts

Issued 12:00 PM EDT 23 March 2025 Today Tonight and Monday

Ice Coverage

Open water except 5 tenths medium lake ice including 1 tenth thick
lake ice in the northeastern section. Consolidated thick lake ice
along the northeastern shores.

Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 6:30 PM EDT 23 March 2025 Tonight and Monday At 6:30 p.m. EDT tonight departing ridge located on a line
northwest-southeast over eastern Ontario.

At 6:30 p.m. EDT tonight low 998 mb located over northwestern
Wisconsin.
By 6:30 p.m. EDT Monday low 999 mb located north of Georgian Bay.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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