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Eastern Lake Ontario

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EDT 26 April 2025

Today Tonight and Sunday.

Wind variable 10 knots increasing to west 20 this morning and to west 30 near noon. Wind diminishing to northwest 20 overnight and to northwest 15 near noon Sunday. Wind diminishing to northwest 10 Sunday evening.

Showers ending near noon Sunday. Fog patches dissipating near noon.

Waves

Issued 03:00 AM EDT 26 April 2025
Today Tonight and Sunday. Waves 0.5 metres or less building to 1 to 1.5 near noon and to 2 to 3 this afternoon. Waves subsiding to 1 to 1.5 near midnight and to 0.5 to 1 Sunday morning and to 0.5 or less Sunday evening.

Extended Forecast

Issued 03:00 AM EDT 26 April 2025
Monday Wind light.
Tuesday Wind south 15 knots increasing to southwest 25 late in the day.
Wednesday Wind southwest 25 knots diminishing to light.

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 3:00 AM EDT 26 April 2025 Today Tonight and Sunday At 3:00 a.m. EDT today deepening low 1011 mb located over western
Lake Ontario.
By 3:00 a.m. EDT Sunday departing low 1001 mb located over
southern Maine.

At 3:00 a.m. EDT today ridge located on a line northeast-southwest
over northern Ontario.
By 3:00 a.m. EDT Sunday ridge located on a line northeast-southwest
over northeastern Ontario.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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