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State of the Snowpack for 12/7/2019 - 12/13/2019
Submitted by andy on Fri, 12/13/2019 - 21:38
Dates of the Week:
12/7/2019 to 12/13/2019
- Wind slabs - Some avalanches reported 12/9 and 12/11.
- Storm slab - Result of storm snow instabilities and a buried surface hoar layer. Several avalanches reported on 12/9 with one near-miss/full burial resulting from a storm slab failing on Surface hoar.
- Loose wet - Some avalanches reported 12/12 - 12/13.
General Snowpack Structure:
- Upper pack wind slabs in wind loaded areas near and above treeline.
- Generally right-side-up snowpack with a buried surface hoar layer in some near and below treeline sheltered but open areas. This layer was reactive early in the week and stopped being reactive by the end of the week.
- Wet rain-soaked snow on and below the snow surface in areas below snow/rain level. Some rain crusts already exist in the upper pack and more should form as this wet snow refreezes.
- Winter storm with strong winds, warming temperatures, and significant precipitation falling as a mix of rain and heavy snow 12/7-12/8.
- Rain up to at least 8500 ft. 12/11-12/12
- Winter storm with falling snow levels, significant snow accumulation, and strong winds 12/13 and continuing into the weekend.