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Eastern Lake Ontario

Warnings

Forecast

Marine Forecast

Issued 06:30 PM EDT 13 March 2026

Tonight and Saturday.

Gale warning in effect.

Wind southeast 30 knots veering to southwest 30 this evening then increasing to southwest 35 near midnight. Wind veering to west 40 late overnight then diminishing to west 25 Saturday afternoon. Wind diminishing to northwest 15 Saturday evening.

Showers or flurries becoming flurries overnight and ending near noon Saturday. Visibility 1 mile or less in flurries.

Waves

Issued 06:30 PM EDT 13 March 2026
Tonight and Saturday. Over open water waves 1.5 metres building to 2 to 3 near midnight and to 3 to 5 early Saturday morning. Waves subsiding to 2 to 3 Saturday evening.

Extended Forecast

Issued 06:30 PM EDT 13 March 2026
Sunday Wind light increasing to east 25 knots in the afternoon then veering to south 30 late in the day.
Monday Wind southeast 25 knots increasing to southwest 35 late in the day.
Tuesday Wind southwest 35 knots diminishing to northwest 25 late in the day.

Ice Forecast*

Issued 12:00 PM EDT 13 March 2026 Today Tonight and Saturday Open water except 2 tenths thick lake ice in the extreme northeastern section. Consolidated rotten thick lake ice along parts of the shore and in the Bay of Quinte.

*Ice Forecast and Warnings also apply to U.S. waters

 

[ Canadian Ice Service ]

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

*Ice Forecast and Warnings also apply to U.S. waters

Ice Forecasts

Issued 12:00 PM EDT 13 March 2026 Today Tonight and Saturday

Ice Coverage

Open water except 2 tenths thick lake ice in the extreme
northeastern section. Consolidated rotten thick lake ice along parts
of the shore and in the Bay of Quinte.

Warnings

Warnings (In effect)

Gale warning in effect

Eastern Lake Ontario

Issued 6:30 PM EDT 13 March 2026

'Gale' force winds of 34 to 47 knots are occurring or expected to occur in this marine area. Watch for updated statements. 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 6:30 PM EDT 13 March 2026 Tonight and Saturday At 6:30 p.m. EDT tonight low 993 mb located over northern Lake
Huron.
By 6:30 p.m. EDT Saturday low 999 mb located over eastern Nova
Scotia.

At 6:30 p.m. EDT tonight ridge located on a line north-south
over Manitoba.
By 6:30 p.m. EDT Saturday ridge located on a line
northwest-southeast over southern Ontario.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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