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Cornwall to Montréal

Warnings

Forecast

Marine Forecast

Issued 03:00 PM EDT 23 April 2025

Tonight and Thursday.

Wind west 15 knots diminishing to light early this evening. Wind light Thursday.

Scattered showers Thursday late in the day. Visibility as low as 1 mile in showers.

Low tonight minus 1. High Thursday plus 14.

Extended Forecast

Issued 06:00 AM EDT 23 April 2025
Friday Wind light becoming northeast 15 knots in the afternoon.
Saturday Wind southerly 15 to 25 knots becoming northwest 15 to 25.
Sunday Wind northwest 15 knots.

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Map of Great Lakes - Lake Huron marine weather areas Cove Island Goderich Oshawa Executive Airport CFB Trenton Western Islands Wiarton Airport Point Petre Lake Simcoe Regional Airport Parry Sound Harbour Toronto City Centre Airport Muskoka Airport Lagoon City Brockville Hamilton Munro Int'l Airport Sarnia Chris Hadfield Airport Tobermory Cobourg Harrow AAFC Long Point Port Weller Burlington Lift Bridge St. Catharines / Niagara District Airport Southeast Shoal Point Pelee Vineland Station Welland-Pelham Erieau Windsor Airport Port Colborne Killarney South Georgian Bay - 45143 Grimsby - 45139 Georgian Bay - 45137 Prince Edward Point - 45135 Port Stanley - 45132 Lake St Clair - 45147 South Lake Huron - 45149 Sault Ste. Marie Airport Lake Simcoe - 45151 Collingwood Greater Sudbury Airport North Bay Airport Kingston Airport Peterborough Municipal Airport Grenadier Island Port Colborne - 45142 Great Duck Island Ajax - 45159 Gore Bay-Manitoulin Airport North Channel - 45154 Lake Nipissing - 45152
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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 23 April 2025 Tonight and Thursday At 3:00 p.m. EDT today low 1015 mb located near Cape Breton Island.
By 8:00 p.m. EDT Thursday departing low 1012 mb located east
of Newfoundland.

At 3:00 p.m. EDT today ridge located on a line north-south over
Lake Ontario.
By 8:00 p.m. EDT Thursday ridge located on a line
northwest-southeast over Anticosti Island.

At 3:00 p.m. EDT today low 1016 mb located near Lake Superior.
By 8:00 p.m. EDT Thursday low 1021 mb located over New England.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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