snow squall warning in effect Snow squalls expected off Lake Huron. What: Total snowfall accumulations of 20 to 40 cm, with the highest amounts expected in the most persistent lake effect snow bands. When: Tonight through Monday morning. Additional information: Lake effect snow off Lake Huron will intensify tonight and a prominent snow squall is expected to form. The exact positioning of this snow squall remains somewhat uncertain, and therefore the location of the greatest snowfall totals. Conditions are expected to improve by near noon on Monday, although flurries will likely continue into Monday afternoon. ### 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. Prepare for quickly changing and deteriorating travel conditions.