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Northern Georgian Bay


Marine Forecast

Issued 06:30 PM EDT 23 September 2021

Tonight and Friday.

Strong wind warning in effect.

Wind variable 10 knots increasing to south 15 this evening and to southwest 20 Friday morning. Wind diminishing to southwest 15 Friday evening.

Scattered showers ending Friday afternoon.


Issued 06:30 PM EDT 23 September 2021
Tonight and Friday. Waves 0.5 metres building to 1 near midnight.

Extended Forecast

Issued 06:30 PM EDT 23 September 2021
Saturday Wind south 20 knots veering to west 20 in the afternoon.
Sunday Wind west 20 knots.
Monday Wind northwest 20 knots.

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Map of Great Lakes - Lake Huron 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 9 May 2021 Forecasts have ended for the season.

Warnings (In effect)

Strong wind warning in effect

Northern Georgian Bay

Issued 6:30 PM EDT 23 September 2021

'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 September 2021 Tonight and Friday At 6:30 p.m. EDT tonight low 1004 mb located near Lake Huron.
By 6:30 p.m. EDT Friday low 1002 mb located over northern James Bay.

At 6:30 p.m. EDT tonight ridge located from Quebec to James Bay
then to Lake Superior.
By 6:30 p.m. EDT Friday departing ridge located from Labrador to
Hudson Bay.

At 6:30 p.m. EDT tonight trough located on a line north-south over
the Ontario - Manitoba border.
By 6:30 p.m. EDT Friday trough located from Manitoba to Lake
Nipigon then to Lake Superior.

Great Lakes - Lake Huron Area

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