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Cornwall to Montréal

Warnings

Forecast

Marine Forecast

Issued 03:00 PM EDT 30 April 2025

Tonight and Thursday.

Wind northwest 15 knots diminishing to light this evening then becoming northeast 15 Thursday afternoon.

Extended Forecast

Issued 06:00 AM EDT 30 April 2025
Friday Wind easterly 20 to 30 knots becoming southwest 25 to 35 late in the day.
Saturday Wind southwest 15 to 25 knots diminishing to light.
Sunday Wind northwest 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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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 30 April 2025 Tonight and Thursday At 3:00 p.m. EDT today low 990 mb located over Natashquan.
By 8:00 p.m. EDT Thursday departing low 995 mb located off
Newfoundland.

At 3:00 p.m. EDT today high 1023 mb located over western Quebec.
By 8:00 p.m. EDT Thursday high 1021 mb located over
Pointe-des-Monts.

At 8:00 p.m. EDT Thursday approaching low 1001 mb located over
Lake Huron.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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