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Eastern Lake Ontario

Warnings

Forecast

Marine Forecast

Issued 06:30 PM EDT 25 April 2025

Tonight and Saturday.

Wind northeast 15 knots veering to east 15 near midnight then diminishing to variable 10 early Saturday morning. Wind increasing to west 30 near noon Saturday.

Showers. Risk of thunderstorms tonight and Saturday morning. Fog patches forming near midnight and dissipating Saturday afternoon.

Waves

Issued 06:30 PM EDT 25 April 2025
Tonight and Saturday. Waves 0.5 to 1 metre building to 2 to 3 Saturday afternoon.

Extended Forecast

Issued 06:30 PM EDT 25 April 2025
Sunday Wind west 25 knots diminishing to light late in the day.
Monday Wind light.
Tuesday Wind south 15 knots increasing to southwest 25 late in the day.

Ice Forecast*

Issued 12:00 PM EDT 25 April 2025 Today Tonight and Saturday Ice free.

*Ice Forecast and Warnings also apply to U.S. waters

 

[ Canadian Ice Service ]

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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
Legend:
buoy Buoy
land station Land Station
Ice Conditions

*Ice Forecast and Warnings also apply to U.S. waters

Ice Forecasts

Issued 12:00 PM EDT 25 April 2025 Today Tonight and Saturday

Ice Coverage

Ice free.

Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 6:30 PM EDT 24 April 2025 Tonight and Friday At 6:30 p.m. EDT tonight departing low 1020 mb located over
eastern Ontario.

At 6:30 p.m. EDT tonight quasi-stationary ridge located on a line
northeast-southwest over northern Ontario.

By 6:30 p.m. EDT Friday approaching low 1015 mb located near Lake
St. Clair.

Great Lakes - Lake Erie and Lake Ontario Area

Another Region

Marine Weather for Canada

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