Northeast Snowfall Impact Scale (NESIS)

Metadata Updated: March 11, 2021

While the Fujita and Saffir-Simpson Scales characterize tornadoes and hurricanes respectively, there is no widely used scale to classify snowstorms. The Northeast Snowfall Impact Scale (NESIS) developed by Paul Kocin of The Weather Channel and Louis Uccellini of the National Weather Service characterizes and ranks high-impact Northeast snowstorms. These storms have large areas of 10 inch snowfall accumulations and greater. NESIS has five categories: Extreme, Crippling, Major, Significant, and Notable. The index differs from other meteorological indices in that it uses population information in addition to meteorological measurements. Thus NESIS gives an indication of a storm's societal impacts. NESIS scores are a function of the area affected by the snowstorm, the amount of snow, and the number of people living in the path of the storm. The aerial distribution of snowfall and population information are combined in an equation that calculates a NESIS score which varies from around one for smaller storms to over ten for extreme storms. The raw score is then converted into one of the five NESIS categories. The largest NESIS values result from storms producing heavy snowfall over large areas that include major metropolitan centers. For details on how NESIS scores are calculated at the National Climatic Data Center, see Squires and Lawrimore (2006).

Access & Use Information

Public: This dataset is intended for public access and use. License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

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Metadata Created Date March 11, 2021
Metadata Updated Date March 11, 2021
Data Update Frequency irregular

Additional Metadata

Resource Type Dataset
Metadata Created Date March 11, 2021
Metadata Updated Date March 11, 2021
Publisher DOC/NOAA/NESDIS/NCDC > National Climatic Data Center, NESDIS, NOAA, U.S. Department of Commerce (Point of Contact)
Unique Identifier Unknown
Identifier gov.noaa.ncdc:C00453
Language en-US
Data Last Modified 2006-01-01
Public Access Level public
Data Update Frequency irregular
Bureau Code 006:48
Metadata Context
Schema Version
Catalog Describedby
Old Spatial {"type": "Polygon", "coordinates": -100.0, 30.0, -65.0, 30.0, -65.0, 50.0, -100.0, 50.0, -100.0, 30.0}
Program Code 006:059
Source Datajson Identifier True
Source Hash 01ded384d9cb988bf055c0dca840493be98a9ef8
Source Schema Version 1.1
Spatial {"type": "Polygon", "coordinates": -100.0, 30.0, -65.0, 30.0, -65.0, 50.0, -100.0, 50.0, -100.0, 30.0}

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