February 2, 2022
February 3, 2022
Chris Engelhardt | ESAC Forecaster
Zone or Region:
Lee Vining Canyon-faceted surface snow
Stability Rating: Very Good
Confidence in Rating:
Stability Trend: Steady
- Raking northeasterly winds were visibly stripping snow off the highest peaks and further eroding alpine northerly and easterly aspects.
- Chilly day with temperatures in the teens to 20sF. 20degF @ 9000ft @ 230pm
- Fairly calm conditions in lower Lee Vining Canyon until I reached 9000ft where the northerly breeze was blowing.
- Robust well-developed large surface hoar upwards of 1-1.5cm in size in moist creek bottoms and along the Lee Vining creek. Did not observe surface hoar beyond these moister environments.
- Thin temperature crusts up to 8500ft that are degrading and easily skied through.
- A majority of travel through northerly terrain within the forest found 5-15cm ski penetration on near surface faceted snow.
- Boot Penetration at 9300ft was 25cm on due north aspect.
- Snowpit at 933oft found 90cm of rounding solid snow pack. NO RESULT on column tests or Extended column tests. 10cm of Fist hardness near-surface facets on the surface above a a top-down progressively firm pack Finger-Pencil hardness with no faceted snow at base of snowpack here.
- NO instability what so ever.