Tilly Jane Snow Park, Cloud Cap Rd, Mt Hood, OR 97041
Did you observe any avalanches?
Size 2: Could bury, injure, or kill a person
Observed several slab avalanches that appeared to be older on the far side of Polallie canyon from the Tilly Jane Trail uptrack
Signs of Unstable Snow
Did you see shooting cracks?
Did you experience collapsing or whumpfing?
Started at 9 am and toured up Tilly Jane from the snowpark with the goal of skiing some good snow on N/NE aspects while avoiding avalanche terrain. Dug a pit around 6200 ft to fine SH layer. Found good snow holding and high winds that forced us to turn around in the alpine around 7000 ft just before the shelter. Lots of wind transport on the upper mountain shown in the attached pictures but winds were mellow below 6600 ft. Did find some wind slab evidence with probing with a weak/strong/weak layering in the alpine.
Observed Avalanche Problem #1:
Dug a pit to find the PWL of SH around 6200 ft near the Polallie canyon on the Tilly Jane uptrack on NE aspect in an open meadow. Found the layer 70 cm down (4 inch of F and 12-14 inch of 4F above SH layer) but were not able to trigger with a column test. Climbing above with skis on and jumping on the column did cause propagation. Seems possible to trigger but grains did not seem as sugary.