Support the forecast! Support the forecast!

Give to Friends of the Chugach National Forest Avalanche Info Center.

Observation: Turnagain

Location: Tincan

Date:
Observer:
Route & General Observations

Standard uptrack to 2300′. Checking out how the snowpack is adjusting to the snow load from 12.19-20 storm. Continuing to track the facet/crusts near the base of the snowpack in mid-elevation terrain

Red Flags
Red flags are simple visual clues that are a sign of potential avalanche danger. Please record any sign of red flags below.
Observer Comments

No obvious signs of current instability. No slab movement on steeper rollovers, no shooting cracks or whumpfing. Slabs avalanches from the storm observed on Seattle Ridge (see ob from 12.20.18) and on Tincan above skin track at 2200' and off of CFR ridge.
No mid-storm instabilities evident with hand pits or in snow pit.
Interesting cracking in the snowpack observed all the way from 1000' to 2300'. New snow sagging or creeping faster than the snow below. Looks like baby glide cracks.

Weather & Snow Characteristics
Please provide details to help us determine the weather and snowpack during the time this observation took place.
Weather

Overcast with periods of broken skies
No precipitation
Temperatures in the 20Fs
Calm winds

Snow surface

Soft snow: 3-4' of settled new snow
Minor wind effect observed around Treeline. Looks more pronounced in the Alpine

Snowpack

Boot pen... full leg
HS @ 1000': 135 cm. 120 down to melt-freeze crust. Ski pen 30 cm
HS @ 1600': 165 cm. 125 down to melt-freeze crust. Ski pen 40 cm
HS @ 2100' 190 cm. 165 down to melt-freeze crust. Ski pen 50 cm
Pit @ 2200' south aspect, 20 degree slope, HS: 205. 195 cm down crust and facets combo: two layers at the base of snowpack. Crust/facet combo inconsistent hardness on observation wall and in stability tests across pit. Too deep for ECT and not uniform enough for PST. See photo. Stability tests produced no results. No mid-storm or storm interface instabilities observed.

Photos & Video
Please upload photos below. Maximum of 5 megabytes per image. Click here for help on resizing images. If you are having trouble uploading please email images separately to staff.