Forecasters will be gathering more information on this avalanche in the field tomorrow. If anyone has any additional details please send them to staff@chugachavalanche.org. Very glad the skier was able to escape and all are ok.
Avalanche: Turnagain
Location: Tincan Common Bowl NW Aspect 2900'
AVALANCHE REPORTED on Tincan Proper. Was informed that skier number 2 following the same line as skier number 1 and triggered a large avalanche near the top of Proper. It occurred on wind slab, 45 deg angle, the crown was between 3-6 feet. The skier managed to evade being caught. That report is found here:
https://www.cnfaic.org/observations/tincan-proper-west-rib-2/
Common Bowl Report 12/3/20
-4-6″ of low density pow on top of the rain crust.
-Rain crust ended at 2500′ which is conveniently located right at the base of the Common Bowl run.
-Dug a pit on the lee side of the bowl NW aspect. 33 deg slope. 2900′.
Top 15-25 cm blower
25 cm down to 55 cm dense layer
55 cm down to 90 cm slightly less dense
90 cm down to 155 cm more dense
ECTN 12; at the 55 cm interface. Granular interface, well-bonded, not reactive. Hard taps from shoulder did not force separation of layers. Shovel shear showed great bonding occurring.
Moderate shovel shear revealed a layer at the 155 cm depth, breaking on facets, low to medium level of bonding noted.
No red flags noted on our tour of Common Bowl. People were skiing the steepest aspects with some sluffage.
Forecaster Comments
| Trigger | Skier | Remote Trigger | Unknown |
| Avalanche Type | Unknown | Aspect | Southwest |
| Elevation | unknown | Slope Angle | 45deg |
| Crown Depth | unknown | Width | unknown |
| Vertical Run | unknown |
Avalanche Details
See comments above.