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Eastern Lake Ontario

Warnings

Forecast

Marine Forecast

Issued 03:00 AM EST 23 January 2026

Today Tonight and Saturday.

Gale warning in effect.

Wind west 30 knots increasing to west 35 this morning then diminishing to northwest 30 this afternoon. Wind diminishing to northwest 20 near midnight and to north 10 Saturday morning. Wind becoming variable 10 Saturday afternoon.

Flurries ending this evening. Visibility 1 mile or less in flurries.

Freezing spray warning in effect.

Freezing spray ending overnight.

Waves

Issued 03:00 AM EST 23 January 2026
Today Tonight and Saturday. Waves 3 metres subsiding to 2 early this evening and to 1 overnight. Waves subsiding to 0.5 Saturday morning.

Extended Forecast

Issued 03:00 AM EST 23 January 2026
Sunday Wind east 15 knots increasing to east 25 in the afternoon.
Monday Wind northeast 20 knots backing to northwest 20.
Tuesday Wind southwest 30 knots.

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Map of Great Lakes - Lake Erie and Lake Ontario marine weather areas Harrow AAFC Burlington Lift Bridge Oshawa Executive Airport Point Pelee Peterborough Municipal Airport Point Petre Hamilton Munro Int'l Airport Erieau Cobourg Toronto City Centre Airport Port Colborne CFB Trenton South Lake Huron - 45149 Windsor Airport Great Duck Island Gore Bay-Manitoulin Airport North Bay Airport Greater Sudbury Airport Killarney Sault Ste. Marie Airport Ajax - 45159 North Channel - 45154 Lake Nipissing - 45152 Lake Simcoe - 45151 Welland-Pelham Lake St Clair - 45147 South Georgian Bay - 45143 Port Colborne - 45142 Grimsby - 45139 Georgian Bay - 45137 Prince Edward Point - 45135 Port Stanley - 45132 Vineland Station Brockville Grenadier Island Kingston Airport Collingwood Lagoon City Muskoka Airport Parry Sound Harbour Lake Simcoe Regional Airport Wiarton Airport Cove Island Goderich Sarnia Chris Hadfield Airport Western Islands Tobermory Long Point Port Weller St. Catharines / Niagara District Airport Southeast Shoal
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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 16 May 2025 Forecasts have ended for the season.
Warnings

Warnings (In effect)

Gale warning in effect

Eastern Lake Ontario

Issued 03:00 AM EST 23 January 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.

Freezing spray warning in effect

Eastern Lake Ontario

Issued 03:00 AM EST 23 January 2026

Moderate or severe freezing spray is 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 EST 23 January 2026 Today Tonight and Saturday At 3:00 a.m. EST today departing low 1004 mb located over northern
Quebec.

At 3:00 a.m. EST today high 1055 mb located over southwestern
Saskatchewan.
By 3:00 a.m. EST Saturday high 1047 mb located over southern
Minnesota.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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