Potentially difficult winter conditions.What:- Poor to nil visibilities in snow and blowing snow.- Local snowfall accumulations up to 15 centimetres.When: Until overnight tonight.Additional information:Heavy flurries accompanied by moderate to strong winds and blowing snow could develop overnight tonight. These conditions could occur repeatedly and lead to sudden whiteout conditions.###Visibility may be suddenly reduced to near zero at times.Snow squall watches are issued when localized, intense snowfall causing rapid accumulation and/or reduced visibility is possible.Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to QCstorm@ec.gc.ca or post reports on X using #QCStorm.For more information about the alerting program, please visit: https://www.canada.ca/en/services/environment/weather/severeweather/weather-alerts/colour-coded-alerts.