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Western Lake Ontario

Warnings

Forecast

Marine Forecast

Issued 10:30 AM EST 12 January 2025

Today Tonight and Monday.

Wind light becoming southwest 10 knots near noon then increasing to south 15 early this evening. Wind veering to southwest 20 near midnight then increasing to southwest 30 near noon Monday.

Scattered flurries tonight and Monday.

Waves

Issued 10:30 AM EST 12 January 2025
Today Tonight and Monday. Waves 0.5 metres or less building to 0.5 to 1 this evening and to 1 to 1.5 late overnight. Waves building to 2 Monday afternoon.

Extended Forecast

Issued 03:00 AM EST 12 January 2025
Tuesday Wind west 30 knots diminishing to northwest 20 late in the day.
Wednesday Wind northwest 20 knots.
Thursday Wind southwest 20 knots increasing to southwest 30.

Ice Forecast*

Issued 12:00 PM EST 12 January 2025 Today Tonight and Monday Open water except 2 tenths new lake ice along the southern shore.

*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 EST 12 January 2025 Today Tonight and Monday

Ice Coverage

Open water except 2 tenths new lake ice along the southern shore.

Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 10:30 AM EST 12 January 2025 Today Tonight and Monday At 10:30 a.m. EST today ridge located on a line north-south over
eastern Ontario.
By 10:30 a.m. EST Monday ridge located on a line northeast-southwest
over New England.

At 10:30 a.m. EST today low 1004 mb located over Wisconsin.
By 10:30 a.m. EST Monday low 1005 mb located over northeastern
Lake Superior.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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