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Western Lake Ontario

Warnings

Forecast

Marine Forecast

Issued 06:30 PM EST 14 November 2025

Tonight and Saturday.

Strong wind warning in effect.

Wind northeast 10 knots increasing to east 15 near midnight then veering to southeast 15 early Saturday morning. Wind increasing to northwest 25 Saturday evening.

Showers and mist Saturday afternoon and evening with a risk of thunderstorms. Visibility 1 mile or less in mist.

Waves

Issued 06:30 PM EST 14 November 2025
Tonight and Saturday. Waves 0.5 metres or less building to 0.5 to 1 late overnight and to 1 to 1.5 Saturday evening.

Extended Forecast

Issued 06:30 PM EST 14 November 2025
Sunday Wind west 35 knots diminishing to northwest 25 in the afternoon.
Monday Wind northwest 25 knots.
Tuesday Wind northwest 15 knots diminishing to light.

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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

Warnings (In effect)

Strong wind warning in effect

Western Lake Ontario

Issued 6:30 PM EST 14 November 2025

'Strong' winds of 20 to 33 knots are occurring or expected to occur in this marine area. Please refer to the latest marine forecasts for further details and continue to monitor the situation through Canadian Coast Guard radio or Weatheradio stations.

Synopsis

Technical Marine Synopsis

Issued 6:30 PM EST 14 November 2025 Tonight and Saturday At 6:30 p.m. EST tonight ridge located on a line north-south over
Lake Ontario.
By 6:30 p.m. EST Saturday ridge located on a line north-south over
central Quebec.

At 6:30 p.m. EST tonight warm front located on a line north-south
over northern Ontario.
By 6:30 p.m. EST Saturday warm front located on a line north-south
over eastern Ontario.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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