The Northeast urban corridor saw four high-impact snowstorms this past winter. How did these storms compare to the worst in history?

Scientists at NOAA use the Northeast Snowfall Impact Scale (NESIS) to put high-impact Northeast snowstorms and their societal impacts into historical perspective. In addition to the size of the area affected and the amount of snow, ranking scores also take into account the number of people living in the path of the storm. NESIS has five categories to classify storm intensity: extreme (5), crippling (4), major (3), significant (2), and notable (1).