Widespread snowfall is anticipated across Switzerland on Thursday, with 10 to 20 centimeters of new snow expected in the lowlands. The western region will see a temporary rise in the snow line due to warm air, while the central and eastern areas will continue to experience persistent snow. Heavy snowfall of 60 to 80 centimeters is forecasted for the Alps, raising avalanche risks. Conditions will remain unstable into Friday, contributing to ongoing snow scenarios and warning of increased avalanche danger.