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Eastern Lake Ontario

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EDT 24 May 2025

Today Tonight and Sunday.

Wind west 10 knots increasing to west 15 this morning then diminishing to northwest 10 this evening. Wind backing to west 10 overnight then increasing to west 15 Sunday morning. Wind diminishing to west 10 Sunday evening.

Scattered showers ending this evening. Scattered showers Sunday afternoon and evening with a risk of thunderstorms. Fog patches dissipating near noon.

Waves

Issued 03:00 AM EDT 24 May 2025
Today Tonight and Sunday. Waves 0.5 metres building to 1 near noon then subsiding to 0.5 near midnight. Waves building to 1 near noon Sunday then subsiding to 0.5 or less Sunday evening.

Extended Forecast

Issued 03:00 AM EDT 24 May 2025
Monday Wind light.
Tuesday Wind light.
Wednesday Wind light increasing to east 20 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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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 3:00 AM EDT 24 May 2025 Today Tonight and Sunday At 3:00 a.m. EDT today departing low 1007 mb located over Maine.

At 3:00 a.m. EDT today ridge located on a line north-south over
northwestern Ontario.
By 3:00 a.m. EDT Sunday ridge located on a line north-south over
western Lake Superior.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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