Eastern Lake Ontario


Marine Forecast

Issued 06:30 PM EDT 23 October 2017

Tonight and Tuesday.

Strong wind warning in effect.

Wind southeast 15 knots increasing to southeast 25 near midnight then diminishing to south 15 early Tuesday morning. Wind increasing to southwest 20 Tuesday evening.

Showers overnight Tuesday morning and Tuesday afternoon and evening.


Issued 06:30 PM EDT 23 October 2017
Tonight and Tuesday. Waves one metre building to 2 late overnight then subsiding to one Tuesday morning.

Extended Forecast

Issued 06:30 PM EDT 23 October 2017
Wednesday Wind southwest 25 knots diminishing to west 15 late in the day.
Thursday Wind west 15 knots backing to southwest 20.
Friday Wind southwest 20 knots.

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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 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 Goderich Sarnia Chris Hadfield Airport Tobermory Harrow AAFC Port Weller St. Catharines Airport Southeast Shoal Vineland Station Welland-Pelham Windsor Airport Burlington Lift Bridge Cobourg Hamilton Munro Int'l Airport Oshawa Executive Airport Point Petre Toronto City Centre Airport CFB Trenton Peterborough Municipal Airport Killarney Western Islands Cove Island Long Point Port Colborne Erieau Point Pelee
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Ice Conditions

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

Ice Forecasts

Issued 12:00 PM EDT 27 April 2017 Forecasts have ended for the season.

Warnings (In effect)

Strong wind warning in effect

Eastern Lake Ontario

Issued 6:30 PM EDT 23 October 2017

'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.


Technical Marine Synopsis

Issued 6:30 PM EDT 23 October 2017 Tonight and Tuesday At 6:30 p.m. EDT tonight dissipating low 1004 mb located over
western Lake Superior.

At 6:30 p.m. EDT tonight low 1000 mb located over southern Lower
By 6:30 p.m. EDT Tuesday low 986 mb located over northern Lower

At 6:30 p.m. EDT tonight quasi-stationary trough located on a line
northeast-southwest over North Channel.

Great Lakes - Lake Erie and Lake Ontario Area

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Summer 2017: Significant weather across Canada

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