Avalanche Observation
• 22. Apr 14:57 • Dry loose-snow avalanche • 1 - Small • Human triggered • S-facing • Avalanche release at 170 masl and ended at 164 masl • Poor bonding between crust and overlying snow • 25 cm high and 6 m wide fracture • Lee side • Antok at skred ville løsne i underkant av skavl og det gjorde det. Fremprovosert.
Incident
• Lives in municipality • Many times on the trip before • None • Traversing • 0 • 0 • 0 • 0
Weather
• Snow • -3.5 °C • 10 m/s from NW ↘ • 100% clouds
Snow Cover
• 60 cm • Moderate snow drift • 20 cm • Elevation of new snow 0 masl • Much loose snow (10-30cm) • Dry • Ok
Avalanche Problems
• Loose dry avalanche • Poor bonding between crust and overlying snow • Within half a meter • The collapsing weak layer is thin < 3 cm. The overlying slab is soft. • Easy to trigger • 2 - Medium • Few steep slopes SE, S, SW • I enkelte leheng har det dannet seg fokksnøflak på glasert skareoverflate. Denne sitter veldig dårlig og er veldig enkel å løse ut. Fortsatt myke flak, så er ikke veldig god binding i laget som raser ut.
• Dry slab avalanche • Buried weak layer of faceted snow above a crust • Within half a meter • The weak layer collapses easily and clean (easy propagation). The collapsing weak layer is thin < 3 cm. • Difficult to trigger • 2 - Medium • Few steep slopes SE, S, SW • Ser antydning til at kanting har begynt i enkelte heng der det er annen snø enn ren smelte-fryse-skare. Kjappe tester indikerer at kanting har begynt 15-20cm under overflaten. Overliggende flak er mykt og har ikke veldig god binding.