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Eastern Lake Ontario

Warnings

Forecast

Marine Forecast

Issued 06:30 PM EST 18 February 2026

Tonight and Thursday.

Wind northeast 20 knots diminishing to northeast 15 late overnight then veering to east 15 Thursday evening.

Snow early this evening with a risk of freezing rain changing to scattered flurries or periods of freezing drizzle and ending overnight. Periods of drizzle and fog patches Thursday evening. Visibility 1 mile or less in snow and in fog patches.

Waves

Issued 06:30 PM EST 18 February 2026
Tonight and Thursday. Over open water waves 1 metre subsiding to 0.5 early Thursday morning then building to 1 Thursday evening.

Extended Forecast

Issued 06:30 PM EST 18 February 2026
Friday Wind east 20 knots increasing to east 25 in the morning then diminishing to east 15 late in the day.
Saturday Wind southwest 20 knots.
Sunday Wind northeast 15 knots backing to north 20 late in the day.

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

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 6:30 PM EST 18 February 2026 Tonight and Thursday At 6:30 p.m. EST tonight quasi-stationary ridge located on a line
northwest-southeast over southern Quebec.

At 6:30 p.m. EST tonight low 995 mb located over central Minnesota.
By 6:30 p.m. EST Thursday low 1005 mb located over northern
Wisconsin.

At 6:30 p.m. EST tonight low 990 mb located over Colorado.
By 6:30 p.m. EST Thursday low 995 mb located over Missouri.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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