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Eastern Lake Ontario

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EDT 28 April 2025

Today Tonight and Tuesday.

Wind light becoming east 10 knots this afternoon then increasing to south 15 this evening. Wind increasing to south 20 near midnight then veering to southwest 20 Tuesday morning. Wind increasing to southwest 25 Tuesday afternoon.

Showers Tuesday late in the day with a risk of thunderstorms.

Waves

Issued 03:00 AM EDT 28 April 2025
Today Tonight and Tuesday. Waves 0.5 metres or less building to 0.5 to 1 near midnight and to 1 to 1.5 overnight. Waves building to 2 Tuesday evening.

Extended Forecast

Issued 03:00 AM EDT 28 April 2025
Wednesday Wind west 20 knots diminishing to light in the afternoon.
Thursday Wind light becoming east 15 knots.
Friday Wind south 15 knots increasing to southwest 25.

Ice Forecast*

Issued 12:00 PM EDT 27 April 2025 Today Tonight and Monday 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 27 April 2025 Today Tonight and Monday

Ice Coverage

Ice free.

Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 3:00 AM EDT 28 April 2025 Today Tonight and Tuesday At 3:00 a.m. EDT today ridge located on a line north-south over
southern Ontario.
By 3:00 a.m. EDT Tuesday ridge located on a line northeast-southwest
over the Eastern Seaboard.

At 3:00 a.m. EDT today trough located on a line northeast-southwest
over northern Ontario.
By 3:00 a.m. EDT Tuesday departing trough located on a line
northeast-southwest over northern Quebec.

At 3:00 a.m. EDT today low 999 mb located over Nebraska.
By 3:00 a.m. EDT Tuesday approaching high 998 mb located near
Lake Superior.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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