Accumulated_winter_season_severity_index
Accumulated winter season severity index
Seasonal weather index
The accumulated winter season severity index or AWSSI provides a scientific way to compare the severity of a winter relative to its weather history. Points are assigned daily based on the maximum and minimum temperature, snowfall and snow depth for a specific site and accumulated through the winter.[1] The index can be used for historical comparisons,[2][3] road maintenance[4] and to understand how severe a current winter is.[5]