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Cornwall to Montréal


Marine Forecast

Issued 07:23 AM EDT 30 July 2021

Today Tonight and Saturday.

Strong wind warning in effect.

Wind northwest 10 to 15 knots increasing to northwesterly 15 to 25 late this morning then diminishing to northwest 10 to 15 this evening. Wind west 15 Saturday.

Extended Forecast

Issued 06:00 AM EDT 30 July 2021
Sunday Wind light.
Monday Wind light becoming west 15 knots.
Tuesday Wind light increasing to southwest 15 to 20 knots.

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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 (In effect)

Strong wind warning in effect

Cornwall to Montréal

Issued 07:23 AM EDT 30 July 2021

'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.


Technical Marine Synopsis

Issued 3:00 AM EDT 30 July 2021 Today Tonight and Saturday At 3:00 a.m. EDT today intensifying low 1003 mb located over
New England.
By 8:00 p.m. EDT Saturday low 990 mb located over the Strait of
Belle Isle.

At 3:00 a.m. EDT today trough from low located on a line north-south
over Québec city.
By 2:00 a.m. EDT Saturday merging trough from low located on a
line northwest-southeast over Sept-Îles.

At 8:00 p.m. EDT tonight ridge located on a line north-south over
Lake Michigan.
By 8:00 p.m. EDT Saturday ridge located on a line north-south over
eastern Lake Ontario.

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