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Southern Georgian Bay

Warnings

Forecast

Marine Forecast

Issued 06:30 PM EDT 18 March 2025

Tonight and Wednesday.

Wind variable 10 knots becoming east 10 this evening then increasing to southeast 15 early Wednesday morning.

Waves

Issued 06:30 PM EDT 18 March 2025
Tonight and Wednesday. Over open water waves 0.5 metres or less.

Extended Forecast

Issued 06:30 PM EDT 18 March 2025
Thursday Wind southeast 15 knots increasing to southwest 25 in the morning then veering to northwest 30 in the afternoon.
Friday Wind northwest 30 knots diminishing to southwest 15.
Saturday Wind northwest 25 knots diminishing to northwest 15 late in the day.

Ice Forecast*

Issued 12:00 PM EDT 18 March 2025 Today Tonight and Wednesday Open water except 9 tenths medium lake ice along the shore in the eastern section. Consolidated thick lake ice along parts of the 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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Ice Conditions

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

Ice Forecasts

Issued 12:00 PM EDT 18 March 2025 Today Tonight and Wednesday

Ice Coverage

Open water except 9 tenths medium lake ice along the shore in the
eastern section. Consolidated thick lake ice along parts of the
shores.

Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 6:30 PM EDT 18 March 2025 Tonight and Wednesday At 6:30 p.m. EDT tonight quasi-stationary ridge located on a line
east-west over northern Ontario.

At 6:30 p.m. EDT tonight low 991 mb located over eastern Colorado.
By 6:30 p.m. EDT Wednesday low 993 mb located over northwestern
Illinois.

At 6:30 p.m. EDT tonight quasi-stationary warm front from low
located on a line northeast-southwest over central Lake Huron.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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