Wyoming – NRCS

Report #13                                   Weekly Snow Report                             Mar 9, 2026

 

Good day to all. This is the 13th Snow Report for Water Year 2026 (2025-2026 snow season). Currently the state’s SNOTELs are reading 84% of median with a basin high of 107% and a basin low of 9%. Last year the state was at 99%, and at 97% in 2024. The map may differ slightly from the table depending upon how many stations were reporting at the time. This report and a map displaying basin SWE percentages of median for the state may be found at: http://www.wrds.uwyo.edu/wrds/nrcs/nrcs.html.

 

For information on the use of median vs. average go to http://www.wcc.nrcs.usda.gov/normals/median_average.htm

 

SNOW WATER EQUIVALENT AS PERCENT OF MEDIAN. The following table shows the percent of median for today, the 2 previous weeks, one year ago, and two years ago for Wyoming basins. Normal (median) is based on all reporting SNOTEL sites in the basin with calculated medians (newer SNOTEL sites do not have medians figured), but does not include manually measured snow courses. The statewide SNOTEL percent of median is calculated by averaging medians for all stations associated with Wyoming basins. The weighted state average is figured using the area of basins (square miles). The reference period for computing medians is the 30-year period 1991 through 2020.

Basin	3/9/2026	3/2/2026	2/23/2026	3/9/2025	3/9/2024
Snake	96	98	93	105	102
Madison	85	89	91	86	88
Yellowstone	107	110	109	90	82
Wind	101	103	102	105	105
Bighorn	77	77	81	95	85
Shoshone	99	102	102	95	95
Powder	71	70	71	78	61
Tongue	56	55	56	91	69
Belle Fourche	57	65	58	88	57
Cheyenne	60	68	64	75	60
Upper North Platte	73	72	69	100	102
Sweetwater	94	93	95	107	99
Lower North Platte	49	41	42	85	69
Laramie	65	62	58	98	94
South Platte	9	3	7	48	52
Little Snake	72	71	70	95	111
Upper Green	95	97	92	106	94
Lower Green	85	79	79	110	112
Upper Bear	87	82	78	106	118
Statewide SNOTEL Percent of Median	84	84	82	99	97
Weighted State Average (Area)	76	86	86	94	86
Minimum	9	3	7	48	52
Maximum	107	110	109	110	118

 

red = down       blue = up      green = same       * Basin SWE values, close to dates of first measurable                                                                                                                      snowfall and melt-out, can be irregular or erratic

 

For more info contact:

 

Jeff Coyle Jeffrey.Coyle@usda.gov

(307) 233-6787

NRCS Snow Survey

100 East B St., Room 3124

Casper, WY 82601