Avalanche

Skiumah

Sarah WilliamsFlathead Range & Glacier NP
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Photo d’observation 1Photo d’observation 2Photo d’observation 3Photo d’observation 4Photo d’observation 5Photo d’observation 6Photo d’observation 7Photo d’observation 8Photo d’observation 9Photo d’observation 10Photo d’observation 11

Quick report

We toured in the Skiumah drainage today after six weeks since FAC's last visit.

  • Access and snow coverage have improved, but still plenty of alder trees and other surface hazards in this drainage. Skinning and skiing on the trail were sporty 
  • In terms of observing recent avalanche activity, Skiumah gets 5 out of 5 stars.  In contrast, ski conditions were frozen avalanche debris with a little soft snow, which earned Skiumah 1 out of 5 stars. 
  • Temperatures stayed well below freezing, as the sun did not hit the basin until after 130pm. The surface snow that we traveled on stayed dry all day. We did not travel on snow that was getting solar input.
  • We observed fracture lines from a hard slab avalanche of both persistent slab and wet slab characteristics that likely failed during late January's atmospheric river.
  • Additionally, soft slab slides of loose dry characteristics were noted on steep aspects across the compass.
  • For comparison, there is a photo from February 2023 of the same cliff band we visited today which highlights both (2024)'s increased avalanche debris and relatively shallow snowpack.
No signs of instability were observed today.

Weather

Air Temp
5 to 15
Cloud Cover
clear
Wind Loading
none
Rain Elevation
0
Recent Snowfall
0 new; 25 cm (recent)
Snow Avail For Transport
moderate amounts

Clear skies, no wind, and sunshine.

Snowpack

In the limited time that we spent traveling on snow that was not frozen avalanche debris, we found soft snow (25 to 30 cm) above a stout crust complex (15 to 20 cm).

Avalanche

Size
D3
Type
HS
Count
4
Aspect
NW
Trigger
N
Elevation
6700 ft

Estimated date and bed surface based on similar avalanches that failed around that time.