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The Northeast Snowfall Impact Scale (NESIS) is a scale used to categorize winter storms in the Northeast United States. The scale was developed by meteorologists
There are two available values for NESIS. The original values that Paul Kocin and Louis Uccellini computed for storms in their original 2004 work "A Snowfall Impact Scale Derived From Northeast Storm Snowfall Distributions" and the NESIS storm values recomputed using some different data and differing methods by the National Climatic Data Center (NCDC) in 2005 to productionize their work for assigning values to future storm storms beyond Kocin/Uccellini work. Kocin/Uccellini originally computed NESIS values for 70 storms from 1888 to 2003. The NCDC recomputed NESIS values for 30 of the same storms and has since for newer storms beyond 2003.
Storms pre-2005 use the Kocin/Uccellini rating and description. Storms 2005 and onward use the NCDC rating and description. NOAA's National Centers for Environmental Information publishes
list of storms
with ratings and other information, starting with the March 1956 storm.
Development of an Operational Northeast Snowfall Impact Scale
by Michael F. Squires and Jay H. Lawrimore
The original Kocin/Uccellini NESIS work
A paper explaining differences between the original Kocin/Uccellini and the NCDC NESIS values for the same storm
Climate of the United States
The Northeast Snowfall Impact Scale (NESIS) is a scale used to categorize winter storms in the Northeast United States. The scale was developed by meteorologists Paul Kocin Paul Kocin (born May 6, 1955) is a meteorologist and winter weather expert. He grew up on Long Island, New York and received his B.S. from Cornell University, followed by his M.Sc. from Pennsylvania State University. After graduation, he briefly ...
and Louis Uccellini, and ranks snowstorms from Category 1 ("notable") to Category 5 ("extreme"). Only two historical blizzards, the 1993 Storm of the Century
The 1993 Storm of the Century (also known as the 93 Superstorm, The No Name Storm, or the Great Blizzard of '93/1993) was a cyclonic storm that formed over the Gulf of Mexico on March 12, 1993. The cold weather, heavy snowfall, high winds and st ...
and the North American blizzard of 1996 are rated in the 5 "extreme" category. The scale differs from the Saffir–Simpson Hurricane Scale and Fujita Scale, which are used to classify tropical cyclones and tornadoes, respectively, in that it takes into account the number of people affected by the storm. The scale, as devised, is intended chiefly to assess past storms rather than assist in forecasts.Kocin and Uccellini, pp. 269–270
List
There are two available values for NESIS. The original values that Paul Kocin and Louis Uccellini computed for storms in their original 2004 work "A Snowfall Impact Scale Derived From Northeast Storm Snowfall Distributions" and the NESIS storm values recomputed using some different data and differing methods by the National Climatic Data Center (NCDC) in 2005 to productionize their work for assigning values to future storm storms beyond Kocin/Uccellini work. Kocin/Uccellini originally computed NESIS values for 70 storms from 1888 to 2003. The NCDC recomputed NESIS values for 30 of the same storms and has since for newer storms beyond 2003.
Storms pre-2005 use the Kocin/Uccellini rating and description. Storms 2005 and onward use the NCDC rating and description. NOAA's National Centers for Environmental Information publishes list of storms
with ratings and other information, starting with the March 1956 storm.
See also
* Regional Snowfall Index *List of Regional Snowfall Index Category 5 winter storms
The Regional Snowfall Index (RSI) is a system used by NOAA to assess the societal impact of winter storms in the United States. The system is a replacement for the Northeast Snowfall Impact Scale (NESIS) system which, unlike the former; assesses ...
*List of Regional Snowfall Index Category 4 winter storms
The Regional Snowfall Index (RSI) is a system used by NOAA to assess the societal impacts of winter storms in the United States. The scale is a replacement for the Northeast Snowfall Impact Scale (NESIS) system, which was used for winter storms j ...
* Saffir–Simpson Hurricane Scale
* List of blizzards
Footnotes
References
* *{{cite web, author=, title=The Northeast Snowfall Impact Scale (NESIS), date=, publisher=National Climatic Data Center (NCDC), access-date=December 18, 2015, url=https://www.ncdc.noaa.gov/snow-and-ice/rsi/nesisDevelopment of an Operational Northeast Snowfall Impact Scale
by Michael F. Squires and Jay H. Lawrimore
External links
The original Kocin/Uccellini NESIS work
A paper explaining differences between the original Kocin/Uccellini and the NCDC NESIS values for the same storm
Climate of the United States