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Eastern Lake Ontario

Warnings

Forecast

Marine Forecast

Issued 10:30 AM EDT 29 September 2020

Today Tonight and Wednesday.

Strong wind warning in effect.

Wind west 20 knots diminishing to southwest 15 this afternoon and to southwest 10 this evening. Wind increasing to west 15 late overnight and to southwest 20 Wednesday morning. Wind increasing to southwest 30 Wednesday afternoon.

Showers ending this afternoon. Rain beginning this evening and changing to showers Wednesday morning with a risk of thunderstorms.

Waves

Issued 10:30 AM EDT 29 September 2020
Today Tonight and Wednesday. Waves one and one half metres subsiding to one early this afternoon and to one half metre or less near midnight. Waves building to one early Wednesday morning and to 2 to 3 Wednesday evening.

Extended Forecast

Issued 03:00 AM EDT 29 September 2020
Thursday Wind southwest 25 knots.
Friday Wind west 15 knots diminishing to light.
Saturday Wind northwest 15 knots diminishing to light.

Ice Forecast*

Issued 12:00 PM EDT 17 May 2020 Today Tonight and Monday Forecasts available to mariners upon request.

*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 N Huron - 45003 W Erie - 45005 S Huron - 45008 Lake Ontario - 45012 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
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» US Marine Weather
Ice Conditions

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

Ice Forecasts

Issued 12:00 PM EDT 17 May 2020 Today Tonight and Monday

Ice Coverage

Forecasts available to mariners upon request.

Warnings

Warnings (In effect)

Strong wind warning in effect

Eastern Lake Ontario

Issued 10:30 AM EDT 29 September 2020

'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 10:30 AM EDT 29 September 2020 Today Tonight and Wednesday At 10:30 a.m. EDT today low 984 mb located over eastern James Bay.
By 10:30 a.m. EDT Wednesday low 987 mb located northeast of
James Bay.

At 10:30 a.m. EDT today trough from low located on a line
northeast-southwest over Lake Superior.
By 10:30 a.m. EDT Wednesday trough from low located on a line
northeast-southwest over Labrador.

At 10:30 a.m. EDT today deepening low 1009 mb located over western
North Carolina.
By 10:30 a.m. EDT Wednesday low 992 mb located over southeastern
Quebec.

Great Lakes - Lake Erie and Lake Ontario Area

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Marine Weather for Canada

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