1 notable storm slab and a few other small avalanches.

Date of Observation: 03/16/2023
Name: Evan Ross

Zone: Northwest Mountains
Route Description: Mt Axtell and Evans Basin. N-E-S 9,500ft to 11,600ft.

Observed avalanche activity: Yes
Avalanches: A variety of old storm slabs and loose snow avalanches that were no longer sharp looking.

East on Mt Axtell: Skier triggered 3 storm slabs. 2 small slabs were triggered on steep, unsupported pillows and didn’t have much propagation. The most notable propagated fairly wide on another steep east-facing slope at 11,300ft. The slab was about 30cm deep, and the avalanche became large in size. These slabs released on very small facets sitting on the 3/15 interface.

East in Evans Basin. Snowmobile triggered 2 small, stubborn, wind slabs that ran within the new snow, and not at the old snow interface like on Axtell.

Several small loose wet avalanches ran today in Evans Basin on E and SE slopes at NTL and ATL elevations.

Weather: Parly cloudy sky. Mostly light to calm winds. Previous transport from stronger winds in the lower Kebler corridor.

Snowpack: The Recent HST is in the range of 15 to 35cm depending on how much settlement it has seen. Similar to yesterday, east aspects produced the most notable results today, with a few soft slabs failing on the recent storm interface. They have been running on small facets above the 3/15 crust. We triggered 3 slabs on this interface. A couple ran on steep and unsupported pillows. The most notable ran on a nice plainer 40-something-degree slope. Interestingly, in the afternoon I targeted the same aspect in Evan’s Basin and was unable to get any results on the same interface on steep E and SE test slopes. The loose snow avalanches and wind slab avalanches in Evans Basin also didn’t produce results on the 3/15 interface like we had seen over on Axtell.

Steep northerly facing slopes skied nice, with a few slow-moving sluffs and one small wind slab.