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Eastern Lake Ontario

Warnings

Forecast

Marine Forecast

Issued 10:30 AM EDT 14 March 2026

Today Tonight and Sunday.

Gale warning in effect.

Wind west 35 knots diminishing to west 25 this afternoon and to northwest 15 early this evening. Wind diminishing to northeast 10 near midnight then increasing to east 15 early Sunday morning. Wind increasing to east 25 near noon Sunday then veering to southeast 25 Sunday evening.

Flurries this morning. Snow Sunday. Visibility 1 mile or less in precipitation.

Waves

Issued 10:30 AM EDT 14 March 2026
Today Tonight and Sunday. Over open water waves 3 to 5 metres subsiding to 2 to 3 early this evening and to 1 late this evening. Waves subsiding to 0.5 or less late overnight then building to 1 Sunday morning and to 2 Sunday afternoon.

Extended Forecast

Issued 03:00 AM EDT 14 March 2026
Monday Wind south 30 knots increasing to southwest 35 late in the day.
Tuesday Wind southwest 35 knots diminishing to northwest 25 late in the day.
Wednesday Wind northwest 20 knots backing to southwest 15.

Ice Forecast*

Issued 12:00 PM EDT 14 March 2026 Today Tonight and Sunday 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 14 March 2026 Today Tonight and Sunday

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 10:30 AM EDT 14 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 10:30 AM EDT 14 March 2026 Today Tonight and Sunday At 10:30 a.m. EDT today departing low 1003 mb located over New
England.

At 10:30 a.m. EDT today ridge located on a line north-south over
Lake Superior.
By 10:30 a.m. EDT Sunday ridge located over Quebec.

By 10:30 a.m. EDT Sunday approaching warm front located from North
Dakota to Lake St. Clair.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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