Upper Colorado snowpack › Upper Green › Blind Bull Sum
Blind Bull Sum snowpack
NRCS SNOTEL station 353 at 8,880 ft in Sublette County, Wyoming, in the Upper Green basin, with daily records since Mar 5, 1979. Latest reading Oct 29, 2026.
Snow water equivalent
0%
of the 1991–2020 median for this date · 0% of average
SWE today
0 in
median 1.2 in · average 1.4 in
Water-year precipitation
100%
of average since Oct 1 · 2 in vs. 2 in
Toward the normal peak
0%
of the average peak, 27.1 in around Apr 20
This water year against the normals
Water year 2027Water year 20261991–2020 median1991–2020 average
Water-year precipitation
Water year 2027Water year 20261991–2020 average
Peak snowpack by water year
Since 1981 this station's snowpack has peaked as high as 48.1 in (Apr 30, 2017) and as low as 14.4 in (Apr 8, 1981). The 1991–2020 average peak is 27.1 in around Apr 20.
| Water year | Peak SWE (in) | Peak date | % of normal peak | April 1 SWE (in) | Days of data |
|---|---|---|---|---|---|
| 2026 | 25.7 | Apr 25, 2026 | 95% | 23.2 | 365 |
| 2025 | 28.6 | Apr 26, 2025 | 106% | 26.4 | 365 |
| 2024 | 27.4 | May 10, 2024 | 101% | 23.6 | 366 |
| 2023 | 28.5 | Apr 26, 2023 | 105% | 25.6 | 365 |
| 2022 | 23.9 | May 10, 2022 | 88% | 16.7 | 365 |
| 2021 | 19.7 | Apr 30, 2021 | 73% | 19.1 | 365 |
| 2020 | 29.7 | May 6, 2020 | 110% | 26 | 366 |
| 2019 | 26.3 | Apr 18, 2019 | 97% | 22.7 | 365 |
| 2018 | 37.7 | Apr 21, 2018 | 139% | 32.7 | 365 |
| 2017 | 48.1 | Apr 30, 2017 | 177% | 42.2 | 365 |
| 2016 | 27.1 | May 7, 2016 | 100% | 25.1 | 366 |
| 2015 | 24.5 | May 1, 2015 | 90% | 23.5 | 365 |
| 2014 | 39.3 | May 18, 2014 | 145% | 36.5 | 365 |
| 2013 | 22.7 | Apr 24, 2013 | 84% | 17.8 | 365 |
| 2012 | 24.6 | Apr 19, 2012 | 91% | 22.9 | 366 |
| 2011 | 45.8 | May 8, 2011 | 169% | 33.9 | 365 |
| 2010 | 20.9 | May 11, 2010 | 77% | 14.5 | 365 |
| 2009 | 32.5 | May 7, 2009 | 120% | 26.8 | 365 |
| 2008 | 28.4 | Apr 25, 2008 | 105% | 26.4 | 366 |
| 2007 | 24.2 | Apr 23, 2007 | 89% | 21.3 | 365 |
| 2006 | 31.1 | Apr 20, 2006 | 115% | 28.8 | 365 |
| 2005 | 20.2 | Apr 21, 2005 | 75% | 19.5 | 365 |
| 2004 | 20.6 | Apr 20, 2004 | 76% | 19.9 | 366 |
| 2003 | 23.6 | Apr 18, 2003 | 87% | 23 | 365 |
| 2002 | 24.1 | May 1, 2002 | 89% | 21 | 365 |
| 2001 | 18.1 | Apr 23, 2001 | 67% | 15.8 | 365 |
| 2000 | 25.2 | Apr 20, 2000 | 93% | 24.9 | 366 |
| 1999 | 33.6 | May 15, 1999 | 124% | 29.8 | 365 |
| 1998 | 25.9 | Apr 17, 1998 | 96% | 24.3 | 365 |
| 1997 | 44.6 | May 2, 1997 | 165% | 41.5 | 365 |
| 1996 | 41.3 | May 18, 1996 | 152% | 35.5 | 366 |
| 1995 | 29.4 | May 15, 1995 | 108% | 24 | 365 |
| 1994 | 20.3 | Apr 8, 1994 | 75% | 18.9 | 365 |
| 1993 | 29.7 | May 7, 1993 | 110% | 22.8 | 365 |
| 1992 | 15.6 | Apr 17, 1992 | 58% | 13.3 | 366 |
| 1991 | 22.9 | May 10, 1991 | 85% | 20 | 365 |
| 1990 | 18.5 | Apr 28, 1990 | 68% | 18.2 | 365 |
| 1989 | 28.8 | Apr 4, 1989 | 106% | 27.6 | 365 |
| 1988 | 21.8 | Apr 9, 1988 | 80% | 20.6 | 366 |
| 1987 | 17.6 | Apr 9, 1987 | 65% | 17.1 | 365 |
| 1986 | 47.1 | May 15, 1986 | 174% | 44.6 | 365 |
| 1985 | 21.6 | Apr 5, 1985 | 80% | 21.3 | 365 |
| 1984 | 28.1 | May 6, 1984 | 104% | 22.8 | 366 |
| 1983 | 29.5 | May 19, 1983 | 109% | 23 | 365 |
| 1982 | 46.2 | Apr 20, 1982 | 170% | 41.5 | 365 |
| 1981 | 14.4 | Apr 8, 1981 | 53% | 13.9 | 365 |
Water years with fewer than 150 days of data are omitted. Data: NRCS National Water and Climate Center AWDB (station 353:WY:SNTL), pulled nightly; current-year values are provisional. Station location: 42.9641, -110.6099. Other stations in the Upper Green basin are listed on the basin page.