Great Lakes - Eastern Lake Ontario Marine Forecast and Alerts

Canada

N.America Satellite

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Current Conditions

Canada 7 Day High and Low Temperatures Forecast

10 Day Forecast

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Eastern Lake Ontario

Marine Forecast

Issued 03:00 AM EDT 26 October 2026

Today Tonight and Tuesday.

Strong wind warning in effect.

Wind southwest 15 knots veering to west 15 this morning then to northwest 15 early this evening. Wind increasing to north 20 late this evening then diminishing to northeast 15 overnight. Wind diminishing to northeast 10 Tuesday morning then becoming light Tuesday afternoon. Wind becoming east 10 Tuesday evening.

Scattered showers this afternoon.

Winds

Issued 03:00 AM EDT 26 October 2026

Today Tonight and Tuesday. Strong wind warning in effect. Wind southwest 15 knots veering to west 15 this morning then to northwest 15 early this evening. Wind increasing to north 20 late this evening then diminishing to northeast 15 overnight. Wind diminishing to northeast 10 Tuesday morning then becoming light Tuesday afternoon. Wind becoming east 10 Tuesday evening.

Waves

Issued 03:00 AM EDT 26 October 2026

Today Tonight and Tuesday. Waves 0.5 to 1 metre subsiding to 0.5 or less near noon Tuesday.

Weather & Visibility

Issued 03:00 AM EDT 26 October 2026

Today Tonight and Tuesday. Scattered showers this afternoon.

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 03:00 AM EDT 26 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.

Technical Marine Synopsis

Issued 3:00 AM EDT 26 October 2026 Today Tonight and Tuesday At 3:00 a.m. EDT today departing ridge located on a line
northeast-southwest over West Virginia.

At 3:00 a.m. EDT today cold front located on a line
northeast-southwest over Lake Nipissing.
By 3:00 a.m. EDT Tuesday departing cold front located off the East
Coast of the U.S.

At 3:00 a.m. EDT today high 1040 mb located over southern
Saskatchewan.
By 3:00 a.m. EDT Tuesday ridge located on a line northwest-southeast
over Ontario.

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