Whaleback Exit near Guy Hut

Quick report

cscrupa · Feb 24, 2024 · Waterton Lakes

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Observation photo 1

Quick report

Weather
cloudy, stormy, warm, windy
Ride Type
mellowSlopes
Stayed Away
alpineSlopes, steepSlopes
Riding Quality
good
Snow Conditions
powder, windAffected
Avalanche Conditions
avalancheConditionSlab, avalancheConditionSnow

Weather

Avg Temp
-5
Max Temp
-10
Min Temp
-10
Wind Speed
windSpeedModerate
Blowing Snow
moderate
Sky Condition
overcast
Snowfall Rate
1
Wind Direction
W
New Snow24 Hours
30
Storm Start Date
2024-02-23
Storm Snow Amount
30
Temperature Trend
steady
Precipitation Type
snow

Storm started Feb 23 afternoon with heavy winds and gusts est. 100 kph+. Approximately 10:00 am on Feb 24, winds subsided to moderate and rate of snowfall increased

Snowpack

Obs Type
point
Ski Penetration
20

Avalanche

Run Length
20
Slab Width
14
Trigger Type
skier
Avalanche Size
1
Slab Thickness
45
Trigger Sub Type
accidental
Start Zone Aspect
S
Vegetation Cover
openSlope
Start Zone Incline
30
Avalanche Character
stormSlab
Number Of Avalanches
1
Start Zone Elevation
2280
Runout Zone Elevation
2270
Avalanche Observation
12hrsAgo
Start Zone Elevation Band
alp
Avalanche Occurrence Datetime
2024-02-24T19:35:00.000Z

Skier triggered on south facing convex roll in low-consequence terrain descending a generally broad and low angle alpine creek bed

Incident

Group Size
2
Terrain Trap
gullyDepression, slopeTransitionOrBench
Group Activity
skiing
Number Injured
0
Number Involved
1
Number Caught Only
1
Number Fully Buried
0
Snow Depth Trigger Point
average
Terrain Shape Trigger Point
convex
Number Partly Buried Able Breathing
0
Number Partly Buried Impaired Breathing
0

Skier triggered small avalanche off convex roll in broad, shallow alpine creek bed. Skier remained on top of slide and was carried approx 10 m, while the runout at the toe was approx 20 m from the crown.