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Southern Georgian Bay


Marine Forecast

Issued 03:00 AM EDT 22 June 2024

Today Tonight and Sunday.

Strong wind warning in effect.

Wind light becoming east 10 knots this afternoon then increasing to south 15 near midnight. Wind increasing to southwest 20 overnight then veering to northwest 20 near noon Sunday. Wind diminishing to northwest 15 Sunday evening.

Scattered showers and fog patches changing to rain this afternoon with a risk of thunderstorms then to scattered showers Sunday morning.


Issued 03:00 AM EDT 22 June 2024
Today Tonight and Sunday. Waves 0.5 metres or less building to 0.5 to 1 overnight and to 1 to 1.5 Sunday morning. Waves subsiding to 0.5 to 1 Sunday evening.

Extended Forecast

Issued 03:00 AM EDT 22 June 2024
Monday Wind northwest 15 knots diminishing to light in the afternoon.
Tuesday Wind light increasing to southwest 20 knots late in the day.
Wednesday Wind west 15 knots diminishing to light.

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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 27 April 2024 Forecasts have ended for the season.

Warnings (In effect)

Strong wind warning in effect

Southern Georgian Bay

Issued 03:00 AM EDT 22 June 2024

'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 3:00 AM EDT 22 June 2024 Today Tonight and Sunday At 3:00 a.m. EDT today dissipating ridge located on a line east-west
over Lake Superior.

At 3:00 a.m. EDT today low 1006 mb located over Nebraska.
By 3:00 a.m. EDT Sunday low 1001 mb located over Lake Huron.

By 3:00 a.m. EDT Sunday approaching warm front from low located
on a line east-west over central Ontario.

Great Lakes - Lake Huron Area

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