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Cornwall to Montréal

Warnings

Forecast

Marine Forecast

Issued 03:00 PM EDT 18 March 2025

Tonight and Wednesday.

Wind light increasing to northeast 10 to 15 knots early Wednesday morning and to southeast 15 to 25 Wednesday evening.

Low tonight minus 2. High Wednesday plus 9.

Extended Forecast

Issued 06:00 PM EDT 18 March 2025
Thursday Wind southeast 15 to 25 knots becoming southerly 15 in the afternoon.
Friday Wind westerly 15 to 25 knots diminishing to westerly 10 to 15.
Saturday Wind light increasing to southwest 15 to 25 knots.

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

At 8:00 p.m. EDT Wednesday approaching low 994 mb located over
the Midwestern states.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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