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Eastern Lake Ontario

Forecast

Marine Forecast

Issued 03:00 AM EDT 13 June 2026

Today Tonight and Sunday.

Wind southwest 10 knots increasing to southwest 15 early this morning then diminishing to southwest 10 this afternoon. Wind becoming light overnight then becoming west 10 Sunday afternoon.

Rain Sunday with a risk of thunderstorms.

Waves

Issued 03:00 AM EDT 13 June 2026
Today Tonight and Sunday. Waves 0.5 to 1 metre subsiding to 0.5 or less early this evening.

Extended Forecast

Issued 03:00 AM EDT 13 June 2026
Monday Wind west 20 knots diminishing to light late in the day.
Tuesday Wind light.
Wednesday Wind light.

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Weather Conditions

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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
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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 17 May 2026 Forecasts have ended for the season.
Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 3:00 AM EDT 13 June 2026 Today Tonight and Sunday At 3:00 a.m. EDT today low 990 mb located over Hudson Bay.
By 3:00 a.m. EDT Sunday low 998 mb located over northeastern
Hudson Bay.

At 3:00 a.m. EDT today quasi-stationary trough located on a line
northwest-southeast over James Bay.

At 3:00 a.m. EDT today ridge located on a line northeast-southwest
over Ohio.
By 3:00 a.m. EDT Sunday ridge located on a line northeast-southwest
over Pennsylvania.

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