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Cornwall to Montréal

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EDT 09 May 2025

Today Tonight and Saturday.

Strong wind warning in effect.

Wind northeast 10 to 15 knots increasing to northeast 15 to 25 this morning then diminishing to northeast 10 to 15 this evening. Wind becoming light near noon Saturday then becoming northwest 15 Saturday evening.

Periods of rain ending Saturday afternoon.

Extended Forecast

Issued 06:00 PM EDT 08 May 2025
Saturday Wind northeasterly 15 knots backing to northwesterly 15 in the afternoon.
Sunday Wind north 15 to 25 knots diminishing to northerly 10 to 15.
Monday Wind southwest 15 to 25 knots diminishing to light late in the day.

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Map of Great Lakes - Lake Huron marine weather areas Cove Island Goderich Oshawa Executive Airport CFB Trenton Western Islands Wiarton Airport Point Petre Lake Simcoe Regional Airport Parry Sound Harbour Toronto City Centre Airport Muskoka Airport Lagoon City Brockville Hamilton Munro Int'l Airport Sarnia Chris Hadfield Airport Tobermory Cobourg Harrow AAFC Long Point Port Weller Burlington Lift Bridge St. Catharines / Niagara District Airport Southeast Shoal Point Pelee Vineland Station Welland-Pelham Erieau Windsor Airport Port Colborne Killarney South Georgian Bay - 45143 Grimsby - 45139 Georgian Bay - 45137 Prince Edward Point - 45135 Port Stanley - 45132 Lake St Clair - 45147 South Lake Huron - 45149 Sault Ste. Marie Airport Lake Simcoe - 45151 Collingwood Greater Sudbury Airport North Bay Airport Kingston Airport Peterborough Municipal Airport Grenadier Island Port Colborne - 45142 Great Duck Island Ajax - 45159 Gore Bay-Manitoulin Airport North Channel - 45154 Lake Nipissing - 45152
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Ice Conditions

There is no ice forecast issued for this area.

Warnings

Warnings (In effect)

Strong wind warning in effect

Cornwall to Montréal

Issued 03:00 AM EDT 09 May 2025

'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 9 May 2025 Today Tonight and Saturday At 3:00 a.m. EDT today high 1033 mb located north of the Quebec
Lower North Shore.
By 8:00 a.m. EDT Saturday departing high 1032 mb located off
Tadoussac.

At 8:00 a.m. EDT today low 1012 mb located over the East Coast of
the U.S.
By 8:00 p.m. EDT Saturday low 1001 mb located over the Bay of Fundy.

Great Lakes - Lake Huron Area

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Marine Weather for Canada

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