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The highest ranking category 4 winter storm is the March 2–8, 1915 United States blizzard, which had an RSI of 17.67. The most recent storm to receive a category 4 ranking is the December 2022 North American winter storm, which scored an RSI value of 11.49. The following list orders the category 4 storms chronologically. [1][2][3]
962 hPa (28.4 inHg) Blizzard Category 1 January 27–31: 10 inches (25 cm) 999 hPa (29.5 inHg) Blizzard Category 1 February 11–24: 27.5 inches (70 cm) 968 hPa (28.6 inHg) Blizzard Category 4 November 7–13 — — Blizzard — November 13–21: 88 inches (220 cm) 961 hPa (28.4 inHg) Storm — 2015 January 23–30
The Northeast snowfall impact scale (NESIS) is a scale used to categorize winter storms in the Northeast United States. [1] The scale was developed by meteorologists Paul Kocin and Louis Uccellini, and ranks snowstorms from category 1 ("notable") to category 5 ("extreme"). Only two historical blizzards, the 1993 Storm of the Century and the ...
A blizzard is a severe snowstorm characterized by strong sustained winds and low visibility, lasting for a prolonged period of time—typically at least three or four hours. A ground blizzard is a weather condition where snow is not falling but loose snow on the ground is lifted and blown by strong winds.
Detroit experienced three brief periods of whiteout on December 23, with visibility reduced to 1.5 miles (2.4 km) or less from 8 a.m. to 2:30 p.m. [21] Grand Rapids, Michigan, had blizzard conditions/zero visibility from 10 a.m. to 10 p.m. on December 23, reduced visibility of 1.5 miles (2.4 km) or less until 5 p.m. on December 24, [22] and ...
January 22-23, 1966. On January 22–23 of 1966, a cyclone that preceded the Blizzard of '66, impacted western New York and Southern Ontario. Toronto received 44 centimetres (17 in) of snow. The city of Batavia and Genesee County had 2 feet (61 cm) of snow fall on that Saturday night alone. The only thing that prevented that snowstorm from ...
The storm ranked as a Category 5 "extreme" event for the Northeast on the Regional Snowfall Index, and a Category 4 event for the Southeast. [4] [5] It is the most recent winter storm to rank as a Category 5 winter storm, and the first to do so since the 2011 Groundhog Day blizzard.
One. 1–3. Notable. Zero. <1.0. Nuisance. The regional snowfall index (RSI) is a scale used by NOAA to assess the societal impact of winter storms in the eastern two-thirds of the United States and classify them into one of six categories. The system was first implemented in 2014, and is a replacement for the Northeast Snowfall Impact Scale ...