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Cornwall to Montréal

Warnings

Forecast

Marine Forecast

Issued 03:00 PM EDT 21 April 2025

Tonight and Tuesday.

Wind northeast 15 knots veering to southeast 15 late this evening then increasing to southwest 20 to 30 early Tuesday morning. Wind diminishing to southwest 15 to 20 Tuesday evening.

Showers this afternoon tonight and Tuesday morning.

Extended Forecast

Issued 06:00 AM EDT 21 April 2025
Wednesday Wind westerly 10 to 15 knots becoming light in the afternoon.
Thursday Wind light.
Friday Wind northeast 10 to 15 knots.

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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
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buoy Buoy
land station Land Station
Ice Conditions

There is no ice forecast issued for this area.

Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 3:00 PM EDT 21 April 2025 Tonight and Tuesday At 3:00 p.m. EDT today ridge located from Ungava Bay to the Gulf
of Maine.
By 2:00 p.m. EDT Tuesday departing ridge located from Labrador to
New England.

At 3:00 p.m. EDT today low 1001 mb located over the Great Lakes.
By 8:00 p.m. EDT Tuesday weakening low 1010 mb located near
Saguenay River.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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