Eastern Lake Ontario


Marine Forecast

Issued 10:30 AM EDT 27 September 2016

Today Tonight and Wednesday

Strong wind warning in effect.

Wind southwest 20 knots diminishing to southwest 15 this afternoon then backing to south 15 this evening. Wind backing to southeast 15 early Wednesday morning then to east 15 near noon Wednesday. Wind increasing to east 20 Wednesday afternoon.

Chance of showers today and tonight with a risk of waterspouts. Chance of showers beginning Wednesday evening.


Issued 06:16 PM EDT 27 September 2016
Today Tonight and Wednesday Waves one half metre building to one Wednesday morning and to one and one half metres Wednesday evening.

Extended Forecast

Issued 03:00 AM EDT 27 September 2016
Thursday Wind northeast 15 knots increasing to northeast 25 in the morning.
Friday Wind east 25 knots.
Saturday Wind southeast 20 knots diminishing to light.

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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 Municipal 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 7 May 2016 Forecasts have ended for the season.

Warnings (In effect)

Strong wind warning in effect

Eastern Lake Ontario

Issued 12:36 PM EDT 27 September 2016

'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 27 September 2016 Tonight and Wednesday At 6:30 p.m. EDT tonight low 999 mb located over eastern Lake
By 6:30 p.m. EDT Wednesday low 1008 mb located over Ohio.

At 6:30 p.m. EDT tonight ridge located on a line north-south
over Manitoba.
By 6:30 p.m. EDT Wednesday ridge located on a line east-west over
northern Ontario.

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