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Eastern Lake Ontario

Warnings

Forecast

Marine Forecast

Issued 06:30 PM EDT 16 October 2026

Tonight and Saturday.

Strong wind warning in effect.

Wind northwest 25 knots diminishing to northwest 15 Saturday morning and to west 10 Saturday afternoon.

Scattered showers this evening.

Waves

Issued 06:30 PM EDT 16 October 2026
Tonight and Saturday. Waves 1.5 metres subsiding to 1 near midnight and to 0.5 near noon Saturday.

Extended Forecast

Issued 06:30 PM EDT 16 October 2026
Sunday Wind southwest 15 knots increasing to southwest 20 in the afternoon.
Monday Wind southwest 15 knots diminishing to light late in the day.
Tuesday Wind light becoming northeast 15 knots.

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

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

Ice Forecasts

Issued 12:00 PM EDT 17 May 2026 Forecasts have ended for the season.
Warnings

Warnings (In effect)

Strong wind warning in effect

Eastern Lake Ontario

Issued 6:30 PM EDT 16 October 2026

'Strong' winds of 20 to 33 knots are occurring or expected to occur in this marine area. Please refer to the latest marine forecasts for further details and continue to monitor the situation through Canadian Coast Guard radio.

Synopsis

Technical Marine Synopsis

Issued 6:30 PM EDT 16 October 2026 Tonight and Saturday At 6:30 p.m. EDT tonight departing low 996 mb located over southern
Quebec.

At 6:30 p.m. EDT tonight ridge located on a line northeast-southwest
over North Dakota.
By 6:30 p.m. EDT Saturday ridge located on a line
northeast-southwest over southwestern Ontario.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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