Image 1 of 11 Of: Snow Profile Copyright: barbro@obskorps
Image 2 of 11 Of: Snow Cover Copyright: barbro@obskorps Comment: Mot V - Steiroblåheia
Image 3 of 11 Of: Snow Cover Copyright: barbro@obskorps Comment: Mot SV - Steiroblåheia
Image 4 of 11 Of: Snow Cover Copyright: barbro@obskorps Comment: Mot NØ/Ø
Image 5 of 11 Of: Snow Cover Copyright: barbro@obskorps Comment: Mot NV
Image 6 of 11 Of: Snow Cover Copyright: barbro@obskorps Comment: Mot NØ
Image 7 of 11 Of: Snow Cover Copyright: barbro@obskorps Comment: Mot V
Image 8 of 11 Of: Snow Cover Copyright: barbro@obskorps Comment: Mot SV
Image 9 of 11 Of: Snow Cover Copyright: barbro@obskorps Comment: Mot S
Image 10 of 11 Of: Snow Cover Copyright: barbro@obskorps Comment: Mot Ø
Image 11 of 11 Of: Snow Cover Copyright: barbro@obskorps Comment: Mot SØ
Danger Sign
• No signs observed • Ingen drønn, ingen skytende sprekker eller fjernutløsning.
Avalanche Activity
• 13. Dec. During the day (+01:00) • No avalanche activity • Ingen ny skredaktivitet observert. Se obs https://www.regobs.no/Registration/358627
Weather
• No precipitation • -4 °C • 5 m/s from S ↑ • 25% clouds • Lufttemperatur ifølge Yr, ikke målt. Mer vind nær toppen.
Snow Cover
• No snowdrift • 0 cm • Snow line at 0 masl. Layered snow begins at 300 masl • Wind slab (hard slab) • Dry • Good • Skiføre over tregrensa er greit, og under tregrensa perfekt (hvis man ser bort fra lav snømengde - målt til 60cm). Under tregrensa løssnø/vindpakket myk snø/hard snø (F-P), fasettert mot bakken. Over tregrensa er snødekket ujevnt fordelt, og består av vindpakket snø (F-P) over skarelag (K), samtlige lag delvis fasettert.
Tests
• ECTP7@16cm(Q3) • Poor • Stabilitetstest 1. Ujevn bruddflate (Q3).
• ECTP11@67cm(Q2) • Medium • Stabilitetstest 1.
• ECTP17@52cm(Q1) • Medium • Stabilitetstest 2. Test utført i umiddelbar nærhet av stabilitetest 1. Stabilitetstest 2 ga utslag @52cm, jevn bruddflate.
Snow Profile
• N • 3 tests connected to snow profile • Persistent weak layer: thin layer, below slab, near surface • 8 temperature points observed
Avalanche Problems
• Dry slab avalanche • Poor bonding between layers in wind deposited snow • Within half a meter • The weak layer collapses easily and clean (easy propagation). The collapsing weak layer is thin < 3 cm. 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, SW, W, NW above 300 masl
• Dry slab avalanche • Buried weak layer of faceted snow above a crust • Within a meter • The collapsing weak layer is thin < 3 cm. A big and identifiable crystal in the weak layer. • Difficult to trigger • 2 - Medium • Some steep slopes N, NE, E, SE, S, SW, W, NW above 300 masl
• Dry slab avalanche • Buried weak layer of faceted snow near the ground • Within a meter • The overlying slab is soft. A big and identifiable crystal in the weak layer. • Difficult to trigger • 1 - Small • Some steep slopes N, NE, E, SE, S, SW, W, NW below unknown masl • Anser ikke skredproblemet som kritisk, men bør nevnes fordi det er nydelig skiføre under tregrensa nå.
Avalanche Danger Assessment
• Stabilitetstester viser lagdeling i fokksnøen. Fokksnøen er delvis fasettert, med høyest temperaturgradient øverst i snødekket (innen en halv meter). • Fortsatt kantkornutvikling frem mot værskiftet på fredag. • 2 Moderate • Forecast correct
