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Cornwall to Montréal

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EDT 02 April 2025

Today Tonight and Thursday.

Wind light increasing to easterly 10 to 15 knots near noon and to southeast 15 to 25 overnight. Wind diminishing to south 10 to 15 Thursday morning then increasing to southwest 15 to 25 Thursday afternoon.

Scattered flurries beginning this evening changing to periods of rain overnight. Risk of freezing rain late overnight. Visibility as low as 1 mile in precipitation.

Temperatures minus 6 rising to plus 15 Thursday afternoon.

Extended Forecast

Issued 06:00 AM EDT 02 April 2025
Friday Wind west 15 knots.
Saturday Wind light becoming southeast 10 to 15 knots.
Sunday Wind light becoming westerly 10 to 15 knots late in the day.

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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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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 AM EDT 2 April 2025 Today Tonight and Thursday At 3:00 a.m. EDT today departing low 981 mb located over Labrador
Sea.

At 3:00 a.m. EDT today ridge located on a line north-south over
Cornwall.
By 8:00 p.m. EDT Thursday ridge located on a line north-south over
eastern Newfoundland.

At 8:00 a.m. EDT today low 988 mb located over the Midwestern
states.
By 8:00 p.m. EDT Thursday low 998 mb located northwest of Lake
Saint-Jean.

Great Lakes - Lake Erie and Lake Ontario Area

Another Region

Marine Weather for Canada

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