LAKE ONTARIO HAZARD WATCH

A Gale (Wind) Warning is in effect as posted by Environment Canada for Western Lake Ontario Marine Forecast.  Winds east 35 knots (65 km/hr) diminishing to east 25 (45) this eveningthen backing to northeast 25 late overnight. Wind diminishing to north 15 (28) Monday afternoon. Waves 3 metres subsiding to 2 near midnight and to one near noon Monday.

A new DAILY peak for Lake Ontario was set at 75.92 metres above International Great Lakes Datum (m IGLD) on Jun-06-2019. Flood damages in 2017 occurred at a threshold elevation of 75.45 m when waves generated during a storm event overtopped and damaged several shoreline structures.  The local damage threshold elevation does not account for wave generated by winds which can increase flood elevations and cause additional damages; this is especially true with onshore winds associated with storms. The current combination of the storm surge and wave heights could approach or exceed 76 m IGLD. 

Watercourses discharging directly into Lake Ontario may be impacted by backwater from the lake.  Residents and visitors to the Lake Ontario shoreline areas should use extreme caution and obey all closure notices for trails and pathways.  As lake levels increase, certain areas may be cut off or isolated.

CVC will continue to monitor weather and lake conditions.  This Lake Ontario Shoreline Hazard Watch will be in effect until Mon-Dec-02-2019 at 4 pm or updated prior to.  

For more information on this Lake Ontario Hazard Watch, contact CVC during office hours at 905- 670-1615

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