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Western Lake Ontario

Warnings

Forecast

Marine Forecast

Issued 10:30 AM EST 14 January 2026

Today Tonight and Thursday.

Wind southwest 15 knots diminishing to variable 10 this afternoon then increasing to north 15 early this evening. Wind increasing to north 20 late this evening then backing to northwest 20 early Thursday morning.

Scattered showers changing to rain or snow near noon then to snow this evening. Scattered flurries Thursday afternoon. Visibility 1 mile or less in snow.

Waves

Issued 10:30 AM EST 14 January 2026
Today Tonight and Thursday. Waves 1.5 metres subsiding to 1 near noon.

Extended Forecast

Issued 03:00 AM EST 14 January 2026
Friday Wind light increasing to southwest 20 knots in the morning.
Saturday Wind southwest 25 knots diminishing to southwest 15 late in the day.
Sunday 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
Legend:
buoy Buoy
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 10:30 AM EST 14 January 2026 Today Tonight and Thursday At 10:30 a.m. EST today trough located on a line northeast-southwest
over southern Ontario.
By 10:30 a.m. EST Thursday trough located on a line
northeast-southwest over New York State.

At 10:30 a.m. EST today cold front located on a line
northeast-southwest over New York State.
By 10:30 a.m. EST Thursday cold front located on a line
northeast-southwest over the Eastern Seaboard.

At 10:30 a.m. EST today ridge located on a line north-south over
southeastern Manitoba.
By 10:30 a.m. EST Thursday ridge located on a line
northeast-southwest over Lake Superior.

By 10:30 a.m. EST Thursday approaching warm front located on a
line northwest-southeast over northwestern Ontario.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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