Georgian Bay


Marine Forecast

Issued 10:30 AM EDT 18 August 2017

Today Tonight and Saturday.

Strong wind warning in effect.

Wind southwest 20 knots veering to west 20 this afternoon then to northwest 20 Saturday morning. Wind diminishing to northwest 15 Saturday afternoon and to light Saturday evening.

Chance of showers changing to a few showers late overnight and ending Saturday afternoon.


Issued 10:30 AM EDT 18 August 2017
Today Tonight and Saturday. Waves one metre subsiding to one half metre Saturday evening.

Extended Forecast

Issued 03:00 AM EDT 18 August 2017
Sunday Wind northwest 15 knots backing to southwest 15 late in the day.
Monday Wind southwest 15 knots.
Tuesday Wind southwest 15 knots veering to northwest 15.

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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 27 April 2017 Forecasts have ended for the season.

Warnings (In effect)

Strong wind warning in effect

Georgian Bay

Issued 10:30 AM EDT 18 August 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 10:30 AM EDT 18 August 2017 Today Tonight and Saturday At 10:30 a.m. EDT today low 1000 mb located east of Lake Superior.
By 10:30 a.m. EDT Saturday low 1002 mb located over western Quebec.

At 10:30 a.m. EDT today ridge located from Saskatchewan to Nebraska.
By 10:30 a.m. EDT Saturday ridge located on a line north-south
over Lake of the Woods.

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