Observation: NWAC Observer
Basic Information
Observation Details
Observation Date:
December 31, 2022Submitted:
December 31, 2022Observer:
NWAC Observer - Brooke MaushundZone or Region:
East CentralLocation:
Nason Ridge Area (S, 5000')Signs of Unstable Snow
Recent Avalanches?
YesCracking?
None ExperiencedCollapsing?
None ExperiencedMedia/Attachments
Advanced Information
Weather Summary
Cloud Cover:
Partly CloudyTemperature:
34°FWind:
Light , SWNew/Recent Snowfall:
HST 20cmTemperatures were above freezing, with 33°F at the road rising to 37°F up at ~5000'. Clouds were scattered and parting to few as the morning moved on, with sun hitting the slope.
Avalanche Observations
| # | Date | Location | Size | Type | Bed Sfc | Depth | Trigger | Photos | Details |
|---|---|---|---|---|---|---|---|---|---|
| 5 |
Dec 31, 2022 () |
Nason Ridge Area SE 3500ft |
D1 R1 |
WL-Wet Loose | I-New/Old Interface | N-Natural |
|
Report |
Small (D1) wet loose slides on S-facing aspects as expected in the forecast.
Snowpack Observations
CTN @4800' SE aspect, with 20cm of wet new snow from the last 48hrs on top of 2cm stout Christmas rain crust. While we did not get results from the CT, the new snow did not appear to be bonding well to the top of the Christmas crust — as demonstrated with skinning conditions. The crust supported skis, and earlier in the day boots as well, with BootPen & SkiPen being ~20cm (just new snow) and not penetrating the ice crust. As the temps increased and the sun came out, the crust still supported skis but BootPen rising to 31cm. Runnels illustrated the rain on snow events of late.
Avalanche Problems
| Problem | Location | Distribution | Sensitivity | Size | Comments |
|---|---|---|---|---|---|
Wet Loose
|
|
Comments: ATL N/O |
Wet loose slides observed on S aspects up to 5000'. Did not get into exposed terrain ATL to be able to collect data around the wind slab problem.