Southern Georgian Bay
Forecast
Marine Forecast
Issued 10:30 AM EDT 30 April 2025
Today Tonight and Thursday.
Wind variable 10 knots becoming light early this evening then becoming southeast 10 late overnight. Wind increasing to east 15 near noon Thursday then veering to southeast 20 Thursday evening.
Showers and fog patches Thursday afternoon and evening with a risk of thunderstorms.
Strong wind warning program has ended for the season.
Waves
Issued 10:30 AM EDT 30 April 2025
Today Tonight and Thursday.
Waves 0.5 metres or less building to 0.5 to 1 near noon
Thursday.
Extended Forecast
Issued 03:00 AM EDT 30 April 2025
Friday
Wind northeast 15 knots backing to northwest 15
in the morning.
Saturday
Wind light.
Sunday
Wind northwest 15 knots diminishing to light
late in the day.
Ice Forecast*
Issued 12:00 PM EDT 29 April 2025 Today Tonight and Wednesday Ice free.
*Ice Forecast and Warnings also apply to U.S. waters
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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 29 April 2025 Today Tonight and WednesdayIce Coverage
Ice free.
Warnings
No watches or warnings in effect.
Synopsis
Technical Marine Synopsis
Issued 10:30 AM EDT 30 April 2025 Today Tonight and Thursday At 10:30 a.m. EDT today high 1025 mb located over northeasternOntario.
By 10:30 a.m. EDT Thursday high 1024 mb located over eastern Quebec.
By 10:30 a.m. EDT Thursday approaching low 1004 mb located over
Lake Michigan.
Great Lakes - Lake Huron Area
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