Basin Click to View Chart	Date	Today SWE (inches)	Today SWE % of Median	Minimum SWE (in)	10th Percentile (inches)	30th Percentile Inches	Median (inches)	70th Percentile (inches)	90th Percentile (inches)	Maximum (inches)	Last Year SWE (inches)	Last Year SWE % of Median
Belle Fourche	18 May 2026	0.00	0	0.00	0.00	0.00	0.00	0.00	0.01	0.83	0.00	0
Bighorn	18 May 2026	0.00	0	0.99	3.26	5.56	7.34	9.31	13.52	16.15	5.07	69
Cheyenne	18 May 2026	0.00	0	0.00	0.00	0.00	0.00	0.00	0.00	0.95	0.00	0
Laramie	18 May 2026	0.00	0	0.03	4.05	6.90	8.56	13.34	17.05	24.77	4.49	52
Little Snake	18 May 2026	0.00	0	1.55	3.37	6.31	9.61	12.15	17.16	24.60	5.53	58
Lower Green	18 May 2026	0.00	0	1.16	2.18	3.00	4.23	6.83	9.47	14.90	2.85	67
Lower North Platte	18 May 2026	0.00	0	0.00	0.00	0.46	2.92	5.82	9.57	22.30	0.50	17
Madison	18 May 2026	0.00	0	0.04	3.98	9.13	12.56	17.00	20.99	25.40	7.76	62
Powder	18 May 2026	0.00	0	0.00	0.88	2.74	4.44	7.09	10.65	13.50	1.53	34
Shoshone	18 May 2026	0.00	0	2.78	5.45	9.03	12.40	18.13	23.83	30.64	8.12	65
Snake	18 May 2026	0.00	0	0.95	4.07	8.44	12.53	16.05	22.96	31.38	10.38	83
South Platte	18 May 2026	0.00	0	0.00	0.00	0.00	0.00	0.00	0.09	0.30	0.00	0
Sweetwater	18 May 2026	0.00	0	0.00	1.68	5.05	6.87	10.46	19.76	25.70	4.47	65
Tongue	18 May 2026	0.00	0	0.00	1.75	5.53	7.51	10.53	15.31	18.60	5.83	78
Upper Bear	18 May 2026	0.00	0	0.00	1.74	4.29	6.63	11.92	18.57	29.51	3.76	57
Upper Green	18 May 2026	0.00	0	0.07	2.40	6.06	7.84	10.68	19.76	27.02	6.16	79
Upper North Platte	18 May 2026	0.00	0	2.67	8.42	12.57	16.17	20.75	28.52	36.52	11.18	69
Wind	18 May 2026	0.00	0	1.55	3.07	5.83	8.34	11.92	17.79	23.74	5.48	66
Yellowstone	18 May 2026	0.00	0	2.15	9.35	13.27	16.53	21.65	25.59	30.06	14.08	85

Data from Natural Resources Conservation Service SnoTel Network