Grassy Mt.

Observed Feb 8, 2021, 2:30 p.m. PST · kootenay-boundary

This report was submitted with an older form.

Quick report

Weather
Sunny, Cold
Ride type
Mellow slopes
Riding quality
Good
Snow conditions
Wind affected, Powder

Avalanche report

Comment
We were skiing mellow trees off the W side of Grassy South on the way back to the car. Skier 1 came out of the trees above a short steep slope above the uptrack, and called back to skier 2 to stay left to avoid the hazard. Skier 2 did not hear the communication and skied onto the slope, triggering the avalanche which ran below him. It was about 20 m wide and ran about 30 m, piling up on the flat uptrack below. From below the crown looked to be about 60 cm, most likely running on the mid-Jan surface hoar on crust.
Run length
30
Slab width
20
Trigger type
Skier
Wind exposure
No wind exposure
Avalanche size
1.5
Slab thickness
60
Trigger sub type
Accidental
Start zone aspect
W
Vegetation cover
Open slope
Start zone incline
40
Avalanche character
Persistent slab
Crust near weak layer
Yes
Number of avalanches
1
Start zone elevation
1700
Avalanche observation
12hrsAgo
Weak layer crystal type
Surface hoar
Start zone elevation band
Btl
Avalanche occurrence datetime
2021-02-08T14:30:00