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Cornwall to Montréal

Forecast

Marine Forecast

Issued 03:00 AM EDT 04 August 2020

Today Tonight and Wednesday.

Strong wind warning in effect.

Wind northeast 10 to 15 knots veering to southeasterly 10 to 15 this afternoon then increasing to northeast 15 to 25 this evening. Wind diminishing to light overnight then increasing to southwest 15 to 25 Wednesday morning.

Showers. Risk of thunderstorms today and Wednesday morning and afternoon. Visibility as low as 1 mile in showers.

Extended Forecast

Issued 06:00 AM EDT 04 August 2020
Thursday Wind southwest 15 to 25 knots diminishing to light late in the day.
Friday Wind light.
Saturday Wind light.

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Map of Great Lakes - Lake Huron 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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Warnings

Warnings (In effect)

Strong wind warning in effect

Cornwall to Montréal

Issued 03:00 AM EDT 04 August 2020

'Strong' winds of 20 to 33 knots are occurring or expected to occur in this marine area. Please refer to the latest marine forecasts for further details and continue to monitor the situation through Canadian Coast Guard radio or Weatheradio stations.

Synopsis

Technical Marine Synopsis

Issued 3:00 AM EDT 4 August 2020 Today Tonight and Wednesday At 3:00 a.m. EDT today low 1012 mb located over Lake Erie.
By 8:00 p.m. EDT Wednesday low 1004 mb located north of Lake
Saint-Jean.

At 3:00 a.m. EDT today Hurricane Isaias 995 mb located near Cape
Hatteras.
By 8:00 a.m. EDT Wednesday Post-tropical Storm Isaias 1004 mb
located over Rivière-du-Loup.

Great Lakes - Lake Huron Area

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