Incidents historiques

Résumé de l'incident

Date
2020-01-04
Location
Cabin Lake
Location Description
Approx. 35km SW of Merritt
Province
BC
Coordinates
49.97211 °, -121.22597 °
Elevation
1850 m
Activity
Snowmobiling
Involvement
1
Injury
0
Fatality
1
Description
Two people were snowmobiling on a small but steep slope above Cabin Lake. A slab avalanche 300 metres wide with an average thickness of 60cm thick was triggered. The avalanche ran up to 175 metres and caught one person who was buried and did not survive. Storms had recently deposited significant amounts of new snow in the area, accompanied by strong south-westerly winds. Preliminary investigation found a layer of surface hoar 60-70cm deep on the bed surface of the slide. The presence of surface hoar and the significant propagation of the fracture line on a relatively small treeline feature suggest this was a Persistent Slab avalanche.

Avalanches

Date/HeureTailleTypeDéclencheurAltitudeVersantLargeur de la plaqueÉpaisseur de la plaque
2.5SMa1915 mNE300 m60 cm

Weather

Température actuelleTempérature maximaleTempérature minimaleTendance 24hVitesse du ventDirection du ventCondition du cielType et intensité des précipitations
--------

Commentaire météo: Weather stations west and north of the scene recorded 21-26mm overnight prior to the date of the incident.

Snowpack

Manteau neigeuxNeige 24 hrsNeige de tempêteDate de la tempête
175 cm---

Commentaire sur le manteau neigeux: Fracture line profile carried out the day after the incident found a snow depth of 175cm with a layer of surface hoar 70cm below the surface. Testing indicated moderate to hard results with a sudden planar fracture character.

Documents

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