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Cornwall to Montréal

Warnings

Forecast

Marine Forecast

Issued 03:00 PM EDT 18 April 2025

Tonight and Saturday.

Wind southeast 15 knots veering to southwest 15 early this evening then increasing to southwest 20 to 30 Saturday morning. Wind veering to northwesterly 20 to 30 Saturday evening.

Showers. Risk of thunderstorms overnight and Saturday morning.

Extended Forecast

Issued 06:00 PM EDT 18 April 2025
Sunday Wind northwest 20 to 30 knots diminishing to northwest 15 to 20 in the afternoon.
Monday Wind light becoming northeast 10 to 15 knots late in the day.
Tuesday Wind easterly 15 knots increasing to southwest 15 to 25.

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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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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 18 April 2025 Tonight and Saturday At 3:00 p.m. EDT today weakening ridge located from Hudson Bay to
Nova Scotia.

At 3:00 p.m. EDT today low 1001 mb located over the Great Lakes.
By 8:00 p.m. EDT Saturday low 1000 mb located over Pointe-des-Monts.

At 8:00 p.m. EDT Saturday approaching high located over Lake
Superior.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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