Snowfall cannot always be accurately forecast. It can snow without warning as a result of a sudden drop in temperatures, or overnight. For this reason, you should always be prepared for snowfall during the winter months, particularly while driving . In areas where there is a large amount of snow, house roofs need to be sufficiently strong for the snow load.
Generally it is easy to predict heavy snowfalls. When heavy snowfalls are forecast for higher areas, the cooling effect of the precipitation can lead to snow falling at much lower levels. For this reason, you should always be prepared for snow during the winter months, particularly while driving. In areas where heavy snowfalls are likely house roofs need to be sufficiently strong to cope with the weight of snow and equipped to prevent snow slides from roofs.