Active AlertsSt. John Vianney Separate School, ON

Snow squalls beginning this afternoon.

What:
Significantly reduced visibility in heavy snow and local blowing snow.
Local snowfall amounts of 15 to 30 cm. Accumulations may exceed 30 cm in the most persistent lake effect snow bands.

When:
This afternoon through Wednesday morning.

Additional information:
Local blowing snow is expected to begin this morning with southwesterly winds gusting up to 50 km/h. Winds will become northwesterly late this afternoon. Occasional snow squalls will affect the area beginning this afternoon, with poor visibility remaining the predominant hazard.

Lake effect snow squalls will become more organized this evening. As a result, the greatest snowfall accumulation is expected tonight. Snow squalls weaken and shift north of the area Wednesday morning.

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Travel will likely be hazardous. Visibility will likely be suddenly reduced to near zero at times. Road closures are possible.

Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to ONstorm@ec.gc.ca or post reports on X using #ONStorm.

For more information about the alerting program, please visit: https://www.canada.ca/en/services/environment/weather/severeweather/weather-alerts/colour-coded-alerts.

Prepare for quickly changing and deteriorating travel conditions.