Trophy Mountain Avalanche Incident

Incident

jeremy · Feb 5, 2022 · Clearwater

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Quick report

Weather
cloudy, windy, sunny
Ride Type
mellowSlopes, denseTrees, openTrees
Stayed Away
convexSlopes, alpineSlopes
Riding Quality
good
Snow Conditions
crusty, powder, heavy, windAffected, hard
Avalanche Conditions
avalancheConditionSnow, avalancheConditionSlab

Weather

Avg Temp
-5
Max Temp
-9
Min Temp
-4
Wind Speed
windSpeedExtreme
Blowing Snow
intense
Sky Condition
scatteredClouds
Wind Direction
NW
New Snow24 Hours
6
Storm Start Date
2022-02-03
Storm Snow Amount
15
Temperature Trend
steady
Precipitation Type
snow

Avalanche

Run Length
150
Slab Width
150
Trigger Type
skier
Wind Exposure
crossLoadedSlope
Avalanche Size
2
Slab Thickness
20
Trigger Sub Type
remote
Start Zone Aspect
NE
Trigger Distance
20
Vegetation Cover
sparseTrees
Start Zone Incline
30
Avalanche Character
windSlab, stormSlab
Number Of Avalanches
2-5
Start Zone Elevation
2120
Runout Zone Elevation
2040
Weak Layer Burial Date
2022-02-05
Avalanche Observation
24to48hrsAgo
Weak Layer Crystal Type
stormSnow
Start Zone Elevation Band
tln
Avalanche Occurrence Datetime
2022-02-05T18:00:00.000Z

Ski remote triggered 20 meters that propagated about 150 meters up and along the slope above. The first avalanche was wind slab with a 20-30 cm crown. Moments later, a second avalanche started about 10 meters below the first on the previous storm slab with all of the debris coming to rest in a small flat area and a nearby depression.

Incident

Group Size
6
Terrain Trap
slopeTransitionOrBench
Group Activity
skiing
Number Injured
0
Number Involved
1
Number Caught Only
0
Number Fully Buried
0
Snow Depth Trigger Point
average
Terrain Shape Trigger Point
planar
Number Partly Buried Able Breathing
1
Number Partly Buried Impaired Breathing
0

Our group of six was traversing across a relatively flat area about 20 meters from the base of a wind loaded slope following a line of trees. One of the group proceeded to move ahead a little bit to our next rally point. As he moved onto the bench out of the trees, he remotely triggered the first slide. As it was coming down, he had nearly moved out of the way when a second, deeper slab released. The second avalanche caught up with him before he was clear and he was swept away. Multiple members of the group witnessed this happening and noted his point last seen. After waiting a few moments for the avalanche to end, the group ensured they were safe, switched to search, and then had a couple of members start towards the buried member. Within two minutes, his head and one arm were spotted and we moved to his location. He had been swept about 15 meters from him PLS. He was fine with no impaired breathing and no injuries and we had him freed within a few minutes. He still had his poles and one ski and we found the second after a few minutes of searching.