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Western Lake Ontario

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EDT 12 June 2025

Today Tonight and Friday.

Wind northwest 15 knots diminishing to west 10 early this morning then veering to northwest 10 this afternoon. Wind veering to northeast 10 near midnight then increasing to northeast 15 Friday morning.

Waves

Issued 03:00 AM EDT 12 June 2025
Today Tonight and Friday. Waves 0.5 to 1 metre subsiding to 0.5 or less this morning then building to 1 Friday morning.

Extended Forecast

Issued 03:00 AM EDT 12 June 2025
Saturday Wind east 15 knots diminishing to light late in the day.
Sunday Wind light.
Monday Wind 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

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 3:00 AM EDT 12 June 2025 Today Tonight and Friday At 3:00 a.m. EDT today departing low 987 mb located over northern
Labrador.

At 3:00 a.m. EDT today ridge located on a line northwest-southeast
over central Manitoba.
By 3:00 a.m. EDT Friday ridge located on a line northwest-southeast
over northern Ontario.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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