Possible flash freeze Friday.What:Temperatures are forecast to fall well below the freezing mark. Ponding water, slush, and any falling precipitation will freeze as the temperature drops.When:Late overnight into Friday morning.Additional information:Rain showers will change over to snow late overnight through Friday morning as temperatures fall below the freezing mark. Local snowfall amounts of 5 cm are expected.Northerly winds gusting 50 to 60 km/h may result in local blowing snow. The combination of snow and blowing snow may result in poor visibility at times.Roads and walkways may become icy and slippery.Travel may become difficult 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 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.