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Poison Flat SNOTEL

No snow sat on the pillow at Poison Flat at the start of October 4, 2026. The NRCS median first snow is November 21, and the median peak is 18.3 in around April 3.

as of

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

Last 8 days

Start-of-day readings for Poison Flat, last 8 days.
DateSWEMedianPercentDepthPrecip since Oct 1
Oct 40.0 inches0.0 inches0.0 inches
Oct 30.0 inches0.0 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 inches29.2 inches
Sep 290.0 inches0.0 inches0 inches29.2 inches
Sep 280.0 inches0.0 inches0 inches29.2 inches
Sep 270.0 inches0.0 inches0 inches29.2 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 Poison Flat

Record values for Poison Flat, from daily snowpack history.
Highest SWE on record59.0 inches, April 7, 2023
Deepest snow on record134 inches, March 1, 2023
Biggest season peak59.0 in, 2022-23 season, on April 7, 2023
Smallest season peak4.2 in, 2014-15 season, on February 10, 2015
Last season's peak13.0 in, 2025-26 season, on February 20, 2026

46 complete water years in the record, daily SWE since October 1, 1980

Station details

Elevation7,730 ft
CountyAlpine
Position38.5058, -119.6262
Record startsOctober 1, 1980
Median peak SWE18.3 in around April 3
Median first snowNovember 21
Median melt-outMay 13
NRCS station ID697:CA:SNTL

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