Date of Observation: 03/22/2023
Name: Irwin Guides
Zone: Northwest Mountains
Route Description: Irwin cat-ski tenure.
Observed avalanche activity: Yes
Avalanches: Several, SS-ASc-D1 storm slabs 8-14″ thick on W and S aspects. Party hats L SS-ASc-R2-D2-I. W aspect NTL 14-16″ X 100′ X 800′ Failed on the 3/20 MFC interface.
Weather:
Snowpack: We did not travel E aspects today due to visibility. In the AM storm slabs on W
aspects tittered between stubborn and reactive. 6-8″ storm slabs grew to 12-16″ as the day progressed with
isolated loaded areas up to 24″ thick. By the afternoon avg. crown heights were in the 12-14″ range and
trended towards very touchy with remote triggers up to 25′ away. S aspects reacted vary similar to W BTL/ NTL
today. All were failing on the 3/20 MFC interface. The MFC produced repeat offence avalanches in our tenure
as guides skied certain slopes after snow safety passes.