A significant lake-effect snow squall event is forecasted to begin Wednesday night and continue through Friday in southern Ontario. The snow squalls will primarily affect areas east and southeast of Lake Huron and Georgian Bay. As the snow squall bands shift, they are expected to spread snow accumulation over a wider area rather than concentrating on specific communities. Some regions may see snow totals ranging from 15 to over 30 centimeters. In addition to heavy snowfall, extensive blowing and drifting snow are anticipated. Wind gusts could reach 50 to 60 kilometers per hour through Thursday, potentially leading to whiteout conditions in various locations. These hazardous weather conditions may result in road closures, particularly affecting major highways such as the Queen Elizabeth Way (QEW) and Highway 401. Meanwhile, a strong winter storm is moving through northern Ontario, bringing widespread impacts. Rain and strong winds are expected to develop in southern Ontario on Wednesday afternoon as the storm intensifies. Travelers are advised to prepare for difficult conditions and to stay updated on weather forecasts as the situation evolves.