Great Lakes - Eastern Lake Ontario Marine Forecast and Alerts

Canada

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Current Conditions

Canada 7 Day High and Low Temperatures Forecast

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Eastern Lake Ontario

Marine Forecast

Issued 06:30 PM EDT 25 September 2026

Tonight and Saturday.

Strong wind warning in effect.

Wind north 15 knots increasing to north 20 Saturday morning.

Winds

Issued 06:30 PM EDT 25 September 2026

Tonight and Saturday. Strong wind warning in effect. Wind north 15 knots increasing to north 20 Saturday morning.

Waves

Issued 06:30 PM EDT 25 September 2026

Tonight and Saturday. Waves 0.5 to 1 metre.

Ice Forecasts

Issued 12:00 PM EDT 17 May 2026 Forecasts have ended for the season.

Warnings (In effect)

Strong wind warning in effect

Eastern Lake Ontario

Issued 6:30 PM EDT 25 September 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.

Technical Marine Synopsis

Issued 6:30 PM EDT 25 September 2026 Tonight and Saturday At 6:30 p.m. EDT tonight quasi-stationary ridge located on a line
northeast-southwest over northeastern Ontario.

By 6:30 p.m. EDT Saturday approaching trough located on a line
north-south over Manitoba.

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