Snow squalls are likely to develop tonight and then weaken later Sunday morning. Strong northwest winds are expected to develop tonight in the wake of an Alberta Clipper crossing Southern Ontario. Flurries and localized snow squalls should develop late this evening or overnight. Local amounts of 15 centimetres are possible tonight with additional amounts Sunday morning before they weaken. Blowing snow may also be significant as winds gust up to 70 km/h, creating near zero visibilities in blowing and falling snow. Travel may be hazardous due to sudden changes in the weather. Consider postponing non-essential travel until conditions improve. Snow squall watches are issued when conditions are favourable for the formation of bands of snow that could produce intense accumulating snow or near zero visibilities. Please continue to monitor alerts and forecasts issued by Environment Canada.