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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.
By using an example of the area from Washington D.C. to Boston, a notable, or category 1, snowfall would drop 4–10 inches of snow. A category 2 would affect same area but more people with more than 10 inches of snow on Mid-Atlantic seaboard. A category 3 would bring about 10–20 inches of snow and affect millions of people in the process.
This is a list of blizzards, arranged alphabetically by continent. A blizzard is defined as a severe snowstorm characterized by strong sustained winds of at least 56 kilometres per hour (35 mph) and lasting for three hours or more. The list states blizzards in various countries since 1972.
A blizzard warning can remain in effect when snowfall ends but a combination of strong winds and blowing snow continue, even though the winter storm itself may have exited the region (also automatically indicates a Winter Storm Warning for Heavy Snow and Blowing Snow). Tropical storm watch TRA
A blizzard also may be formed when a cold front and warm front mix together and a blizzard forms at the border line. Another storm system occurs when a cold core low over the Hudson Bay area in Canada is displaced southward over southeastern Canada, the Great Lakes, and New England .
A blizzard warning (SAME code: BZW) is a hazardous weather statement issued by Weather Forecast Offices (WFO) of the National Weather Service (NWS) in the United States, which indicates heavy snowfall accompanied by sustained winds or frequent gusts of 35 mph (56 km/h) or greater are forecast to occur for a minimum of three hours.
Cloud. Cumulonimbus cloud; Arcus cloud; Downburst. Microburst; Heat burst; Derecho; Lightning. Volcanic lightning; Thunderstorm. Air-mass thunderstorm; Thundersnow
The Great Storm of 1975 (also known as the Super Bowl Blizzard, Minnesota's Storm of the Century, or the Tornado Outbreak of January, 1975) was an intense winter storm system that impacted a large portion of the Central and Southeast United States from January 9–12, 1975.