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Western Lake Ontario

Warnings

Forecast

Marine Forecast

Issued 07:11 AM EDT 02 April 2025

Today Tonight and Thursday.

Wind east 25 knots increasing to east 30 near noon then diminishing to southeast 20 near midnight. Wind veering to south 20 late overnight then to southwest 20 Thursday morning. Wind veering to west 15 Thursday afternoon then diminishing to northwest 10 Thursday evening.

Showers this afternoon tonight and Thursday with a risk of thunderstorms. Fog patches forming overnight and dissipating Thursday afternoon.

Waves

Issued 03:00 AM EDT 02 April 2025
Today Tonight and Thursday. Waves 1.5 to 2 metres.

Extended Forecast

Issued 03:00 AM EDT 02 April 2025
Friday Wind light.
Saturday Wind east 20 knots backing to north 15 late in the day.
Sunday Wind light becoming north 15 knots late in the day.

Ice Forecast*

Issued 12:00 PM EDT 1 April 2025 Today Tonight and Wednesday Open water.

*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 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
Legend:
buoy Buoy
land station Land Station
Ice Conditions

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

Ice Forecasts

Issued 12:00 PM EDT 1 April 2025 Today Tonight and Wednesday

Ice Coverage

Open water.

Warnings

No watches or warnings in effect.

Synopsis

Technical Marine Synopsis

Issued 3:00 AM EDT 2 April 2025 Today Tonight and Thursday At 3:00 a.m. EDT today ridge located on a line north-south over
eastern Ontario.
By 3:00 a.m. EDT Thursday departing ridge located on a line
north-south over eastern Quebec.

At 3:00 a.m. EDT today low 990 mb located over Colorado.
By 3:00 a.m. EDT Thursday low 992 mb located over Wisconsin.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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