Near-zero visibility in fog is expected.
Areas of dense fog will impact the area tonight into early Thursday morning. Particularly in fog prone areas along the 401 and 402.
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Travel will likely be hazardous in some locations. Visibility will likely be suddenly reduced at times.
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 social media using #ONStorm.