Snow Climatology > National Extremes

National Snowfall and Snow Depth
Extremes Table


   Snow Amount
(inches)		 Location Ending
Date		 Number of
Years of
Non-Missing
Data		 Data Period
Analyzed
COOP Station Number    Station Name      State
Greatest daily snowfall 63 053261 GEORGETOWN CO 12/04/1913 47 1893-2006
Greatest 2-day snowfall
(snowed both days)		 120.6 509146 THOMPSON PASS AK 12/30/1955 19 1952-1973
Greatest 3-day snowfall
(snowed all 3 days)		 147 509146 THOMPSON PASS AK 12/30/1955 19 1952-1973
Greatest 4-day snowfall
(snowed all 4 days)		 163 509146 THOMPSON PASS AK 12/30/1955 19 1952-1973
Greatest 5-day snowfall
(snowed all 5 days)		 175.4 509146 THOMPSON PASS AK 12/31/1955 19 1952-1973
Greatest 6-day snowfall
(snowed all 6 days)		 172.6 509146 THOMPSON PASS AK 02/24/1953 19 1952-1973
Greatest 7-day snowfall
(snowed all 7 days)		 186.9 509146 THOMPSON PASS AK 02/25/1953 19 1952-1973
Greatest monthly snowfall
total		 313 048781 TAMARACK CA 03/1907 31 1903-1948
Greatest Aug-July snowfall
total		 974.1 509146 THOMPSON PASS AK 1953 1 1952-1973
Greatest daily Snow Depth
  		 293 456898 RAINIER PARADISE RNGER S WA 04/12/1974 14 1920-2006

Missing data may cause apparent discrepancies between the daily extreme, monthly total, and seasonal total snowfall values. The monthly and seasonal totals were based on complete data; if any days were missing, then the monthly or seasonal total could not be computed for that year. Daily snowfall extremes were not as susceptible to missing data. Consequently, it may be possible for a 1-day extreme to be greater than a multiple-day extreme, a daily extreme to be greater than a monthly total, and a monthly total to be greater than a seasonal total. Checking the "number of years with non-missing data" parameter is an important part of using this snow climatology.