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Chapman Tunnel SNOTEL

No snow sat on the pillow at Chapman Tunnel at the start of October 4, 2026. The NRCS median first snow is October 21, and the median peak is 15.4 in around April 19.

as of

All values are from the start of the day, midnight Pacific Standard Time

Last 8 days

Start-of-day readings for Chapman Tunnel, last 8 days.
DateSWEMedianPercentDepthPrecip since Oct 1
Oct 40.0 inches0.0 inches0 inches0.0 inches
Oct 30.0 inches0.0 inches0 inches0.0 inches
Oct 20.0 inches0.0 inches0 inches0.0 inches
Oct 10.0 inches0.0 inches0 inches0.0 inches
Sep 300.0 inches0.0 inches0 inches19.8 inches
Sep 290.0 inches0.0 inches0 inches19.8 inches
Sep 280.0 inches0.0 inches0 inches19.8 inches
Sep 270.0 inches0.0 inches0 inches19.8 inches

The Natural Resources Conservation Service (USDA) created the figures on this page, which are works of the US government and therefore have no copyright under 17 U.S.C. 105. The notice that 17 U.S.C. 403 requires appears in this sentence. Neither NRCS nor USDA endorses or is affiliated with WeatherTotals. See: Data sources and attribution.

Records at Chapman Tunnel

Record values for Chapman Tunnel, from daily snowpack history.
Highest SWE on record23.3 inches, April 17, 2008
Deepest snow on record81 inches, March 9, 2019
Biggest season peak23.3 in, 2007-08 season, on April 17, 2008
Smallest season peak7.8 in, 2025-26 season, on March 8, 2026
Last season's peak7.8 in, 2025-26 season, on March 8, 2026

19 complete water years in the record, daily SWE since September 7, 2007

Station details

Elevation10,090 ft
CountyPitkin
Position39.2621, -106.6294
Record startsSeptember 1, 2007
Median peak SWE15.4 in around April 19
Median first snowOctober 21
Median melt-outJune 1
NRCS station ID1101:CO:SNTL

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