Northern Georgian Bay


Marine Forecast

Issued 03:00 AM EDT 23 October 2017

Today Tonight and Tuesday.

Gale warning in effect.

Wind southeast 15 knots veering to south 15 early this morning then increasing to southeast 25 early this evening. Wind increasing to south 35 Tuesday morning then diminishing to south 30 near noon Tuesday.

Chance of showers beginning early this morning changing to rain this afternoon then to a few showers overnight with risk of thunderstorms Tuesday afternoon and evening.


Issued 03:00 AM EDT 23 October 2017
Today Tonight and Tuesday. Waves one metre subsiding to one half metre early this morning then building to one this evening. Waves building to 2 to 3 overnight.

Extended Forecast

Issued 03:00 AM EDT 23 October 2017
Wednesday Wind south 25 knots diminishing to light in the afternoon then increasing to northwest 25 late in the day.
Thursday Wind northwest 15 knots increasing to south 30 late in the day.
Friday Wind southwest 30 knots veering to northwest 30 late in the day.

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Weather Conditions

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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)

Gale warning in effect

Northern Georgian Bay

Issued 03:00 AM EDT 23 October 2017

'Gale' force winds of 34 to 47 knots are occurring or expected to occur in this marine area. Watch for updated statements. 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 23 October 2017 Today Tonight and Tuesday At 3:00 a.m. EDT today low 1003 mb located over southern Manitoba.
By 2:00 p.m. EDT today dissipating low 1004 mb located over
northern Minnesota.

At 3:00 a.m. EDT today low 1008 mb located over southwestern
By 3:00 a.m. EDT Tuesday approaching low 985 mb located over
central Michigan.

At 3:00 a.m. EDT today cold front located on a line
northeast-southwest over North Channel.
By 8:00 p.m. EDT tonight departing cold front located on a line
northeast-southwest over northern Labrador.

Great Lakes - Lake Erie and Lake Ontario Area

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Summer 2017: Significant weather across Canada

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