Western Lake Ontario


Marine Forecast

Issued 03:00 AM EDT 28 June 2017

Today Tonight and Thursday.

Strong wind warning in effect.

Wind west 10 knots increasing to southwest 15 near noon then diminishing to south 10 this evening. Wind backing to southeast 10 overnight then increasing to south 15 Thursday morning. Wind increasing to southwest 25 Thursday afternoon.

A few showers beginning near noon Thursday with a risk of thunderstorms.


Issued 03:00 AM EDT 28 June 2017
Today Tonight and Thursday. Waves one half to one metre building to 2 Thursday evening.

Extended Forecast

Issued 03:00 AM EDT 28 June 2017
Friday Wind southwest 20 knots diminishing to light late in the day.
Saturday Wind southwest 15 knots.
Sunday Wind southwest 15 knots.

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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)

Strong wind warning in effect

Western Lake Ontario

Issued 03:00 AM EDT 28 June 2017

'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 or Weatheradio stations.


Technical Marine Synopsis

Issued 3:00 AM EDT 28 June 2017 Today Tonight and Thursday At 3:00 a.m. EDT today ridge located on a line north-south over
By 3:00 a.m. EDT Thursday ridge located on a line
northeast-southwest over Virginia.

At 3:00 a.m. EDT today low 997 mb located over southern North
By 3:00 a.m. EDT Thursday low 996 mb located over Upper Michigan.

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