Northern Georgian Bay
Forecast
Marine Forecast
Issued 06:30 PM EDT 11 October 2026
Tonight and Monday.
Strong wind warning in effect.
Wind southeast 15 knots veering to south 15 this evening then to southwest 15 late overnight. Wind diminishing to variable 10 Monday morning then increasing to northeast 15 Monday afternoon. Wind increasing to northeast 20 Monday evening.
Scattered showers Monday late in the day.
Waves
Issued 06:30 PM EDT 11 October 2026
Tonight and Monday.
Waves 0.5 to 1 metre subsiding to 0.5 or less near noon Monday
then building to 0.5 to 1 Monday evening.
Extended Forecast
Issued 06:30 PM EDT 11 October 2026
Tuesday
Wind northeast 15 knots increasing to
northeast 20 in the afternoon.
Wednesday
Wind north 15 knots.
Thursday
Wind northeast 15 knots veering to southeast
15.
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Weather Conditions
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Ice Conditions
*Ice Forecast and Warnings also apply to U.S. waters
Ice Forecasts
Issued 12:00 PM EDT 17 May 2026 Forecasts have ended for the season.Warnings
Warnings (In effect)
Strong wind warning in effect
Northern Georgian Bay
Issued 6:30 PM EDT 11 October 2026'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.
Synopsis
Technical Marine Synopsis
Issued 6:30 PM EDT 11 October 2026 Tonight and Monday At 6:30 p.m. EDT tonight Post-tropical Storm Isaias 1009 mb locatedover Virginia.
By 6:30 p.m. EDT Monday departing low 995 mb located east of
Nova Scotia.
At 6:30 p.m. EDT tonight trough located on a line
northeast-southwest over northeastern Ontario.
By 6:30 p.m. EDT Monday trough located on a line east-west over
northern Ontario.
Great Lakes - Lake Huron Area
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