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Here's how we compiled the list: We pored through 30-year average snowfall statistics of hundreds of locations in the U.S. from 1991 through 2020. We considered only those towns and cities with a ...
The map below shows the probability that an area could receive more than 4 inches of snow. Use the slider at the top left to toggle by day. Cleveland expected snowfall
The interactive NCEI Historic Christmas Snow Probability Map for the country shows a locality's chance of having an inch of snow on the ground Christmas Day. Its most recent map, published Dec. 6 ...
The amount of snow received at weather stations varies substantially from year to year. For example, the annual snowfall at Paradise Ranger Station in Mount Rainier National Park has been as little as 266 inches (680 cm) in 2014-2015 and as much as 1,122 inches (2,850 cm) in 1971–1972. [2]
Environment Canada reports a chance of precipitation (COP) that is defined as "The chance that measurable precipitation (0.2 mm of rain or 0.2 cm of snow) will fall on any random point of the forecast region during the forecast period." [7] The values are rounded to 10% increments, but are never rounded to 50%. [8]
Lake effect snowfall accounts for 30 to 60 percent of the annual snowfall near the coasts of the Great Lakes. [54] Lake Erie has the distinction of being the only great lake capable of completely freezing over during the winter due to its relative shallowness. [55] Once frozen, the resulting ice cover alleviates lake-effect snow downwind of the ...
According to NOAA, "while the map shows the climatological probability of snow-covered ground on December 25, the actual conditions this year may vary widely from these probabilities because the ...
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. Since its initiation, the NCDC has retroactively assigned RSI values to over 500 historical storms since 1900.