The last avalanche forecast for the 2019-2020 season posted on May 3rd. Thank you to everyone who supported the avalanche center this past season with volunteer hours, donations, and/or avalanche, snowpack, and weather observations. These contributions are crucial to avalanche center operations.
State of the Snowpack for 11/30/2019 - 12/6/2019
Submitted by andy on Fri, 12/06/2019 - 19:10
Dates of the Week:
11/30/2019 to 12/6/2019
- Wind slabs - Several avalanches reported in two different groups. One group during and just after the storm from 11/30-12/2 and another group during a wind event on 12/5 and 12/6. Both groups had natural and human-triggered avalanches. One near miss occurred on Thursday.
- Storm slab - A few instabilities reported during the storm from 11/30 to 12/2.
- Loose wet - A few natual avalanches reported during the rain (12/1-12/2) and on Tuesday (12/3) when the sun came out.
General Snowpack Structure:
- The 11/30-12/2 storm deposited heavy snow on top of colder lighter snow creating an upside-down snowpack early in the week. In some areas, a thin layer of facets existed near the base of the snowpack.
- By the end of the week, the snowpack had gained strength and consolidated into a right-side-up pack.
- Large winter storm with strong winds, warming temperatures, and significant precipitation falling as a mix of rain and heavy snow last weekend 11/30-12/2.
- Wind event that transported snow and formed wind slabs on the night of 12/4 and during the day on 12/5 and 12/6.