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Cornwall to Montréal

Forecast

Marine Forecast

Issued 03:00 PM EDT 15 July 2024

Tonight and Tuesday.

Wind southwest 10 to 20 knots with gusts to 35 near thunderstorms late this evening and after midnight. Wind diminishing to light late overnight then becoming southwest 15 near noon Tuesday. Wind diminishing to light Tuesday evening.

Scattered showers ending overnight with a risk of thunderstorms. Showers Tuesday afternoon and evening with a risk of thunderstorms. Visibility as low as 1 mile in showers.

Extended Forecast

Issued 06:00 AM EDT 15 July 2024
Wednesday Wind westerly 15 knots.
Thursday Wind light.
Friday Wind southwest 10 to 15 knots.

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Map of Great Lakes - Lake Erie and Lake Ontario marine weather areas N Huron - 45003 W Erie - 45005 S Huron - 45008 Lake Ontario - 45012 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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Ice Conditions

There is no ice forecast issued for this area.

Warnings

Watches (In effect)

Squall watch in effect

Cornwall to Montréal

Issued 4:33 PM EDT 15 July 2024 Conditions this evening will be favourable for the development of squalls with gusts up to 35 knots, frequent lightning and poor visibilities due to showers at times heavy.

Please continue to monitor alerts and forecasts issued by Environment Canada. For more information monitor Canadian Coast Guard radio or Weatheradio stations.

Synopsis

Technical Marine Synopsis

Issued 3:00 PM EDT 15 July 2024 Tonight and Tuesday At 3:00 p.m. EDT today trough located from Labrador to Lake
Superior.
By 2:00 p.m. EDT Tuesday dissipating trough located on a line
north-south over Anticosti Island.

At 8:00 p.m. EDT tonight low 1002 mb located near Lake Superior.
By 8:00 p.m. EDT Tuesday low 1000 mb located northwest of Lake
Saint-Jean.

Great Lakes - Lake Erie and Lake Ontario Area

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