The last avalanche forecast for the 2023-2024 season will post on April 21st. Thank you to all who contributed to the avalanche center this season through observations, volunteer time, and/or financial contributions.
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State of the Snowpack for 1/18/2020 - 1/24/2020
Submitted by andy on Sat, 01/25/2020 - 14:18
Dates of the Week:
1/18/2020 to 1/24/2020
Location
FS 30 Rd near 6,700'.
United States
39° 13' 53.9148" N, 120° 13' 12.504" W
See map: Google Maps
US
- Persistent Slabs - Large D3 snowbike-triggered avalanche and a smaller skier-triggered avalanche reported on 1/18. Numerous whumpfs and unstable snowpit tests early during the week.
- Wind Slabs - Skier triggered and natural wind slab avalanches reported on 1/18, 1/20, and 1/24.
- Loose Wet - Minor activity reported.
- A rain crust has formed on the snow surface up to about 8500 ft.
- The Jan 4 weakness started the week with widespread signs of instability. By the end of the week, data indicated that this layer is gaining strength.
- Below the Jan 4 crust/facet combination, a well-consolidated snowpack exists.
- A clear day Jan 18 gave way to cloudy skies and warmer weather through Jan 20.
- Small storm with wind and limited snow on Jan 21.
- Another warm and weak storm with rain up to 8500 ft. on the night of Jan 23.
