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Western Lake Ontario

Warnings

Forecast

Marine Forecast

Issued 09:26 PM EST 13 November 2025

Tonight and Friday.

Wind northwest 15 knots diminishing to northwest 10 early Friday morning then becoming variable 10 Friday afternoon.

Scattered showers ending Friday morning.

Waves

Issued 09:27 PM EST 13 November 2025
Tonight and Friday. Waves 1.5 metres subsiding to 0.5 to 1 near midnight and to 0.5 or less Friday morning.

Extended Forecast

Issued 06:30 PM EST 13 November 2025
Saturday Wind light increasing to southeast 15 knots in the afternoon and to west 25 late in the day.
Sunday Wind west 30 knots.
Monday Wind northwest 25 knots.

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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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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

Warnings (Ended)

Strong wind warning ended

Western Lake Ontario

Issued 9:26 PM EST 13 November 2025
Synopsis

Technical Marine Synopsis

Issued 6:30 PM EST 13 November 2025 Tonight and Friday At 6:30 p.m. EST tonight ridge located on a line northwest-southeast
over northwestern Ontario.
By 6:30 p.m. EST Friday ridge located on a line north-south over
Lake Ontario.

By 6:30 p.m. EST Friday approaching trough located on a line
north-south over the Ontario - Manitoba border.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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