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Eastern Lake Ontario

Warnings

Forecast

Marine Forecast

Issued 06:30 PM EST 13 January 2026

Tonight and Wednesday.

Wind south 20 knots veering to southwest 25 this evening then diminishing to southwest 15 near noon Wednesday. Wind becoming north 15 Wednesday evening.

Scattered showers changing to snow Wednesday evening. Visibility 1 mile or less in snow.

Waves

Issued 06:30 PM EST 13 January 2026
Tonight and Wednesday. Waves 1 metre building to 2 near midnight then subsiding to 1.5 early Wednesday morning. Waves subsiding to 1 Wednesday afternoon.

Extended Forecast

Issued 06:30 PM EST 13 January 2026
Thursday Wind northwest 20 knots.
Friday Wind light increasing to southwest 20 knots.
Saturday Wind southwest 25 knots diminishing to southwest 15 late in the day.

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Map of Great Lakes - Lake Erie and Lake Ontario marine weather areas Harrow AAFC Burlington Lift Bridge Oshawa Executive Airport Point Pelee Peterborough Municipal Airport Point Petre Hamilton Munro Int'l Airport Erieau Cobourg Toronto City Centre Airport Port Colborne CFB Trenton South Lake Huron - 45149 Windsor Airport Great Duck Island Gore Bay-Manitoulin Airport North Bay Airport Greater Sudbury Airport Killarney Sault Ste. Marie Airport Ajax - 45159 North Channel - 45154 Lake Nipissing - 45152 Lake Simcoe - 45151 Welland-Pelham Lake St Clair - 45147 South Georgian Bay - 45143 Port Colborne - 45142 Grimsby - 45139 Georgian Bay - 45137 Prince Edward Point - 45135 Port Stanley - 45132 Vineland Station Brockville Grenadier Island Kingston Airport Collingwood Lagoon City Muskoka Airport Parry Sound Harbour Lake Simcoe Regional Airport Wiarton Airport Cove Island Goderich Sarnia Chris Hadfield Airport Western Islands Tobermory Long Point Port Weller St. Catharines / Niagara District Airport Southeast Shoal
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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 16 May 2025 Forecasts have ended for the season.
Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 6:30 PM EST 13 January 2026 Tonight and Wednesday At 6:30 p.m. EST tonight low 987 mb located over northeastern
Ontario.
By 6:30 p.m. EST Wednesday low 994 mb located over eastern Quebec.

At 6:30 p.m. EST tonight cold front located on a line
northeast-southwest over Lake Superior.
By 6:30 p.m. EST Wednesday cold front located on a line
northeast-southwest over Montréal.

At 6:30 p.m. EST tonight ridge located on a line north-south
over Manitoba.
By 6:30 p.m. EST Wednesday ridge located on a line north-south
over Lake of the Woods.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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