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Cornwall to Montréal

Forecast

Marine Forecast

Issued 03:00 PM EDT 20 June 2024

Tonight and Friday.

Wind northwesterly 15 to 20 knots with gusts to 45 near thunderstorms. Wind diminishing to light early this evening then becoming northeast 15 late overnight. Wind diminishing to light Friday evening.

Scattered showers ending overnight with a risk of thunderstorms. Visibility as low as 1 mile in showers.

Extended Forecast

Issued 06:00 PM EDT 20 June 2024
Saturday Wind light becoming southeasterly 10 to 15 knots in the morning.
Sunday Wind southeasterly 15 to 20 knots veering to southwest 15 to 25.
Monday Wind westerly 15 knots diminishing to light late in the day.

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Weather Conditions

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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

Warnings (In effect)

Squall warning in effect

Cornwall to Montréal

Issued 6:26 PM EDT 20 June 2024 Squalls with wind gusts up to 35 knots are expected or occurring in the area.



Mariners are advised to prepare for squalls. If underway, seek safe harbour immediately.

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 20 June 2024 Tonight and Friday At 3:00 p.m. EDT today trough located from Anticosti Island to
Montréal.
By 8:00 p.m. EDT Friday departing trough located on a line
northeast-southwest over southern Newfoundland.

At 3:00 p.m. EDT today ridge located from the Great Lakes to
Saguenay River.
By 8:00 p.m. EDT Friday ridge located from James Bay to New England.

Great Lakes - Lake Erie and Lake Ontario Area

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