NESIS Scale
The NESIS scale is created by the NOAA's National Climatic Data Center. Applies to snowstorms that impact the eastern 2/3rds of the USA.
The RIS value is based on the spacial extent of the storm, amount of snow fall, and the contrast of these elements with the population
The RIS value is based on the spacial extent of the storm, amount of snow fall, and the contrast of these elements with the population