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Western Lake Ontario

Warnings

Forecast

Marine Forecast

Issued 01:09 PM EDT 14 April 2026

Today Tonight and Wednesday.

Wind southwest 30 knots except southwest 20 near the east end. Wind diminishing to southwest 15 early this evening and to variable 10 near midnight. Wind increasing to southwest 15 early Wednesday morning.

Scattered showers and fog patches. Risk of thunderstorms this afternoon and this evening and overnight and Wednesday morning.

Waves

Issued 10:30 AM EDT 14 April 2026
Today Tonight and Wednesday. Waves 1 metre subsiding to 0.5 or less late overnight then building to 0.5 to 1 Wednesday morning.

Extended Forecast

Issued 03:00 AM EDT 14 April 2026
Thursday Wind southwest 15 knots.
Friday Wind light becoming northeast 15 knots.
Saturday Wind light increasing to southwest 20 knots late in the day.

Ice Forecast*

Issued 12:00 PM EDT 14 April 2026 Today Tonight and Wednesday 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 CFB Trenton Port Colborne - 45142 Hamilton Munro Int'l Airport Oshawa Executive Airport Port Stanley - 45132 Lake Nipissing - 45152 Point Petre Georgian Bay - 45137 Toronto City Centre Airport Lake Simcoe - 45151 South Georgian Bay - 45143 Prince Edward Point - 45135 Peterborough Municipal Airport South Lake Huron - 45149 Collingwood Lake St Clair - 45147 Grimsby - 45139 Goderich Lagoon City Kingston Airport Muskoka Airport Parry Sound Harbour Grenadier Island Lake Simcoe Regional Airport Wiarton Airport Brockville Western Islands Cove Island Great Duck Island North Channel - 45154 Sarnia Chris Hadfield Airport Gore Bay-Manitoulin Airport Tobermory Harrow AAFC Long Point North Bay Airport Port Weller St. Catharines / Niagara District Airport Greater Sudbury Airport Southeast Shoal Vineland Station Port Colborne Erieau Cobourg Sault Ste. Marie Airport Windsor Airport Welland-Pelham Killarney Ajax - 45159 Point Pelee Burlington Lift Bridge
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 14 April 2026 Today Tonight and Wednesday

Ice Coverage

Ice free.

Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 10:30 AM EDT 14 April 2026 Today Tonight and Wednesday At 10:30 a.m. EDT today departing ridge from high located on a
line east-west over James Bay.

At 10:30 a.m. EDT today low 1005 mb located over northern Lake
Huron.
By 10:30 a.m. EDT Wednesday departing low 1011 mb located over
the Maritimes.

At 10:30 a.m. EDT today low 1004 mb located over northeastern
Nebraska.
By 10:30 a.m. EDT Wednesday low 1007 mb located over Lake Huron.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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