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Image 16 of 16 Of:  Tests Copyright:  barbro@obskorps Comment:  Overflaterim @20cm
Danger Sign
• Recent snowdrift • Område: I denne fjellsiden. Beskrivelse: Blåser jevnt i dette området (fra tregrensa og oppover), men varierer i regionen.
Avalanche Activity
• 12. Feb. During the day (+01:00) • No avalanche activity
Snow Cover
• Some snow drift • 3 cm • Elevation of new snow 0 masl. Snow line at 0 masl. Layered snow begins at 400 masl • Storm slab (soft slab) • Dry • Good • Under tregrensa løssnø/vindpakket myk snø over "gammel snø".
Over tregrensa varierer snøoverflaten fra vindpakket hard/vindpakket myk til flekker med skaredekke. Veldig bra skiføre under tregrensa, varierende over tregrensa (veldig bra i lesider -dårlig i vindutsatte områder). Snødekket består øverst av lag med fokksnø, nedenfor dette lagvis skare og avrundede korn/smelteformer som er delvis/helt fasettert (sukkersnø i flere størrelser).
Weather
• No precipitation • -11 °C • 10 m/s from SE ↖ • 50% clouds • Vindretning i dette området Ø, men for regionen SØ. Kontinuerlig vindhastighet på cirka 10m/s.
• ECTP6@20cm(Q1) • Nedsnødd overflaterim 9mm
• ECTN29@60cm(Q1) • Fasetterte smelteformer 2mm
Snow Profile
• N • 4 tests connected to snow profile • Persistent weak layer: thin layer, below slab, near surface • 12 temperature points observed
Avalanche Problems
• Dry slab avalanche • Buried weak layer of surface hoar • Within half a meter • The weak layer collapses easily and clean (easy propagation). The overlying slab is soft. A big and identifiable crystal in the weak layer. • Easy to trigger • 2 - Medium • Few steep slopes N, NE, E, SE, S, SW, W, NW above 400 masl
• Dry slab avalanche • Buried weak layer of new snow • Within half a meter • The overlying slab is soft. • Difficult to trigger • 1 - Small • Few steep slopes N, NE, E, SE, S, SW, W, NW above 400 masl
• Dry slab avalanche • Poor bonding between layers in wind deposited snow • Within half a meter • Very difficult to trigger • 1 - Small • N, NE, E, SE, S, SW, W, NW above 400 masl
Avalanche Danger Assessment
• Høy temperaturgradient i de øverste 30cm av snødekket. Funn av overflaterim med bruddflate Q1, svært usikker på utbredelsen av overflaterim i regionen.
Ellers ujevn bruddflate i fokksnøen Q2 (både ved nedføyket nysnø og ved dårlig binding i fokksnøen).
Også brudd i tykkere lag med delvis kantkorn (sukkersnø), men svært vanskelig å påvirke under flere lag med skaredekke. • Vindtransporten fortsetter de neste dagene. Mest vind meldt sør i Lofoten. • 2 Moderate • Forecast correct