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Eastern Lake Ontario

Forecast

Marine Forecast

Issued 10:30 AM EDT 21 October 2020

Today Tonight and Thursday.

Strong wind warning in effect.

Wind south 25 knots veering to southwest 25 near noon then diminishing to west 15 early this evening. Wind diminishing to west 10 after midnight then becoming light early Thursday morning. Wind becoming east 15 Thursday evening.

Showers ending this evening with a risk of thunderstorms.

Waves

Issued 10:30 AM EDT 21 October 2020
Today Tonight and Thursday. Waves one metre building to one and one half metres this afternoon then subsiding to one this evening. Waves subsiding to one half metre or less early Thursday morning.

Extended Forecast

Issued 03:00 AM EDT 21 October 2020
Friday Wind southeast 15 knots veering to southwest 20 late in the day.
Saturday Wind southwest 20 knots veering to northwest 15.
Sunday Wind northeast 15 knots increasing to northeast 20.

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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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 21 October 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 21 October 2020 Today Tonight and Thursday At 10:30 a.m. EDT today departing high 1033 mb located over
eastern Quebec.

At 10:30 a.m. EDT today low 1012 mb located over northeastern
Georgian Bay.
By 10:30 a.m. EDT Thursday low 1010 mb located over eastern
Labrador.

At 10:30 a.m. EDT today ridge located from Saskatchewan to Iowa.
By 10:30 a.m. EDT Thursday ridge located from Manitoba to Vermont.

Great Lakes - Lake Erie and Lake Ontario Area

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