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Conditions on Gray Butte
Location Name:Gray Butte
Date and time of observation:Wed, 01/16/2019 - 1:00pm
Observation made by:Forecaster
Red Flags:Recent avalanche activityWhumphing noises, shooting cracks, or collapsingRecent loading by new snow, wind, or rain
96067 Mount Shasta , CA
United States41° 20' 39.552" N, 122° 11' 44.5704" W
Conditions on Gray Butte @ 1:00 p.m. 01/16/19:
- Height of storm snow (HST): 25 - 40 cm (10 - 24 in).
- Signs of instability: Skier triggered storm slabs and propagating wind slabs. Blocking and cracking.
- Column tests: ECTN1 ↓ 15 cm, ECTN7 ↓ 20 cm, ECTN14 ↓ 40 cm atop crust; CT2 ↓ 15 cm RP, CT4 ↓ 20 cm RP.
- Temperatures: Below 6000 feet, increasing temperatures made snowpack very heavy and sluggish.
Column tests and shovel tilt tests indicate the presence of a storm slab problem especially coupled with reactive ski test results on steep slopes near and below treeline.
Cloud Cover:100% of the sky covered by clouds
Accumulation rate:Greater than 1 in. per hour
Air temperature:Below Freezing
Air temperature trend:Warming