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Western Lake Ontario

Warnings

Forecast

Marine Forecast

Issued 10:30 AM EST 15 January 2026

Today Tonight and Friday.

Wind northwest 20 knots diminishing to northwest 15 near noon then increasing to northwest 20 early this evening. Wind diminishing to northwest 15 early Friday morning then backing to southwest 15 near noon Friday. Wind backing to south 20 Friday evening.

Snow changing to scattered flurries this afternoon and ending this evening. Flurries Friday late in the day. Visibility 1 mile or less in precipitation.

Risk of freezing spray late this morning. Risk of freezing spray overnight and Friday morning.

Waves

Issued 10:30 AM EST 15 January 2026
Today Tonight and Friday. Waves 1 to 1.5 metres subsiding to 0.5 to 1 this afternoon then building to 1 to 1.5 near midnight. Waves subsiding to 0.5 to 1 Friday morning.

Extended Forecast

Issued 03:00 AM EST 15 January 2026
Saturday Wind southwest 15 knots increasing to southwest 20 in the afternoon.
Sunday Wind southwest 25 knots.
Monday Wind southwest 25 knots increasing to southwest 30.

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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 10:30 AM EST 15 January 2026 Today Tonight and Friday At 10:30 a.m. EST today low 995 mb located over southeastern Quebec.
By 10:30 a.m. EST Friday low 980 mb located over northern Nova
Scotia.

At 10:30 a.m. EST today ridge located over Lake Superior.
By 10:30 a.m. EST Friday ridge located on a line north-south over
northeastern Ontario.

At 10:30 a.m. EST today trough located on a line north-south over
northwestern Ontario.
By 10:30 a.m. EST Friday trough located on a line north-south over
northwestern Michigan.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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