National Weather Service United States Department of Commerce

Lake Effect Snow through Friday; Heavy Rain, Thunderstorms and Mountain Snow in California

Periods of moderate to heavy lake effect snow will continue through Friday downwind of Lake Erie and Ontario. Several additional inches of accumulating snow are expected. A Pacific storm will bring heavy rain and mountain snow across California, the Southwest and Intermountain West today. Isolated severe thunderstorms and scattered flash flooding is possible across parts of southern California. Read More >

Casper Top 29 Snowstorms since 1937

(Through March 2025) 

                                                                                                                               

Date   Storm Total Snowfall (Inches)               
   
1.   April 3-5, 2023 37.4
2.   December 23-24, 1982 31.3
3.   April 18-21, 1973 27.9
4.   March 13-14, 2021 26.3
5.   April 30-May 2, 1946 23.2
6.   March 14, 2021 21.2
7.   December 1-2, 1982 21.0
8.   May 4-7, 1978 18.8
9.   October 16-17, 1998 18.7
10.  May 2-4, 1950 18.4
11.  January 30 - February 2 2016 18.1
12.  April 29-May 2, 1973 17.9
13.  April 18-20, 1971 17.4
14.  October 3-5, 2013 16.4
15.  March 17-19, 1954 16.1
15.  November 8-13, 1985 16.1
16.  May 10-12, 1980 15.7
16.  February 3-4, 2020 15.7
17.  March 28-30, 1977 15.6
18.  November 2-3, 1994 15.4
19.  November 7-8, 1983 15.3
20.  April 8-10, 2013 15.1
20.  April 16-17, 2013 15.1
21.  October 19-20, 1949 15.0
22.  November 19-21, 1979 14.9
23.  February 18-19, 2019 14.7
23.  March 13-14, 2019 14.7
23.  April 12-17, 1945 14.5
25.  November 18-20, 1977 14.4
26.  March 1-2, 1952 14.1
27.  April 2-3, 1964 14.0
27.  January 5-6, 1987 14.0

                                          Last updated 4/11/2025