Avalanche warning for region Voss Friday 08.02.2019

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 collapsing weak layer is thin < 3 cm. The overlying slab is soft. A big and identifiable crystal in the weak layer. • Easy to trigger • Possible • 2 - Medium • Some steep slopes above 0 masl

Avalanche Problems

• Buried weak layer of surface hoar • 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. • N between 800 masl and 0 masl • BT @35. Q2.

Avalanche Problems

• Buried weak layer of surface hoar • Within half a meter • The collapsing weak layer is thin < 3 cm. The overlying slab is soft. A big and identifiable crystal in the weak layer. • Tydelige krystaller, overflaterim. BT M @35 Q2 Bryter glatt men ikke lett.

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 collapsing weak layer is thin < 3 cm. The overlying slab is soft. A big and identifiable crystal in the weak layer. • Easy to trigger • Possible • 1 - Small • Some steep slopes S above 800 masl

Avalanche Problems

• Buried weak layer of surface hoar • Within half a meter • The collapsing weak layer is thin < 3 cm. The overlying slab is soft. A big and identifiable crystal in the weak layer. • Nysnø, lett bundet snø over svakt lag

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. • Easy to trigger • Possible • 1 - Small • Some steep slopes S above 800 masl

Avalanche Problems

• Dry slab avalanche • Buried weak layer of new snow • Within half a meter • The overlying slab is soft. • Difficult to trigger • Possible • 2 - Medium • Some steep slopes N, NE, E, SE, S, SW, W, NW above 500 masl • Sjiktovergang i delvis nedbrutt nysnø.

• Dry slab avalanche • Buried weak layer of surface hoar • Within half a meter • The collapsing weak layer is thin < 3 cm. The overlying slab is soft. A big and identifiable crystal in the weak layer. • Difficult to trigger • Possible • 2 - Medium • Some steep slopes N, S above 600 masl • Vi har observert nedsnødd overflateterim i både sør og nordvendte sider.

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 collapsing weak layer is thin < 3 cm. The overlying slab is soft. A big and identifiable crystal in the weak layer. • Very easy to trigger • Possible • 1 - Small • NE, E above 0 masl

Avalanche Problems

• Dry slab avalanche • Buried weak layer of surface hoar • Within half a meter • The overlying slab is soft. • Difficult to trigger • Possible • 2 - Medium • NE above 700 masl

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 collapsing weak layer is thin < 3 cm. The overlying slab is soft. A big and identifiable crystal in the weak layer. • Easy to trigger • Possible • 2 - Medium • Some steep slopes N, NE, SW, W, NW above 600 masl • Akkurat her er det kun ca 15-20 cm mykt flak over rimlaget. Mulig ikke større enn str 1 skred

• Dry slab avalanche • Buried weak layer of faceted snow above a crust • Within half a meter • The collapsing weak layer is thin < 3 cm. The overlying slab is soft. • Difficult to trigger • Unlikely • 2 - Medium • Some steep slopes N, NE, E, SE, S, SW, W, NW above 600 masl

Avalanche Problems

• Dry slab avalanche • Buried weak layer of surface hoar • Within half a meter • A big and identifiable crystal in the weak layer. • Easy to trigger • Possible • 2 - Medium • Many steep slopes N, NE, E, W, NW above 900 masl • Foktig sno, middels skredfare på Nord-Aust/Vest

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 collapsing weak layer is thin < 3 cm. The overlying slab is soft. A big and identifiable crystal in the weak layer. • Easy to trigger • Likely • 1 - Small • Some steep slopes N between 600 masl and 400 masl

Avalanche Problems

• Dry slab avalanche • Buried weak layer of surface hoar • Within 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 • Likely • 2 - Medium • between unknown masl and 0 masl

• Dry slab avalanche • Buried weak layer of faceted snow near the ground • Over one meter • A big and identifiable crystal in the weak layer. • Very difficult to trigger • Unlikely • 3 - Large • between unknown masl and 0 masl

Avalanche Problems

• Buried weak layer of new snow • Within half a meter • The collapsing weak layer is thin < 3 cm. • Bryter glatt, men ikke lett. Bruddkant ved 25 cm. Ovenfor lag er 1F hardt, fokksnø. Det svake laget er mulig blanding av overflaterim og nysnø.

Avalanche Problems

• Dry slab avalanche • Buried weak layer of surface hoar • Within half a meter • 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 • Some steep slopes N, NE, E, NW above 900 masl

• Dry slab avalanche • Buried weak layer of faceted snow near surface • Within half a meter • The weak layer collapses easily and clean (easy propagation). The overlying slab is soft. • Easy to trigger • 1 - Small • Some steep slopes N, NE, SW, W, NW above 900 masl

Avalanche Problems

• Buried weak layer of surface hoar • Within a meter • The collapsing weak layer is thin < 3 cm. A big and identifiable crystal in the weak layer.

Avalanche Problems

• Dry slab avalanche • Poor bonding between layers in wind deposited snow • Within half a meter • The collapsing weak layer is thin < 3 cm. The overlying slab is soft. • Easy to trigger • 2 - Medium • Some steep slopes N, NE, E, W, NW above 600 masl

• Dry slab avalanche • Buried weak layer of faceted snow above a crust • Within half a meter • The collapsing weak layer is thin < 3 cm. The overlying slab is soft. • Difficult to trigger • 2 - Medium • Few steep slopes N, NE, E, SE, S, SW, W, NW above 600 masl • Er usikker på hvor potent dette skredproblemet er. MEn det er kantkorna snø i snødekket, og det kan noek by på problemer spesielt der snødekket er tynt. Det er kantkorndanning både i forbindelse med et tynt skarelag (gjelder antagelig ikke høyere til fjells) øverst i smeltepakka og nede ved bakken.

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 collapsing weak layer is thin < 3 cm. • Difficult to trigger • 2 - Medium • S between 900 masl and 0 masl • Bruddet løser etter 25 slag på ETC test. Q 1

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 collapsing weak layer is thin < 3 cm. The overlying slab is soft. A big and identifiable crystal in the weak layer. • Easy to trigger • Possible • 2 - Medium • Some steep slopes NE, E between unknown masl and 0 masl • Flaket over nedsnødd rim hadde store variasjoner i tykkelse og hardhet. Lilleblokk test ble utført i leheng og resulterte i brudd ved svak påkjenning.

Avalanche Problems

• Dry slab avalanche • Buried weak layer of faceted snow near the ground • Within a meter • The weak layer collapses easily and clean (easy propagation). A big and identifiable crystal in the weak layer. • Very difficult to trigger • Possible • 2 - Medium • Some steep slopes SE, S between 1200 masl and 800 masl

Avalanche Problems

• Dry slab avalanche • Buried weak layer of new snow • Within half a meter • The weak layer collapses easily and clean (easy propagation). • Difficult to trigger • 2 - Medium • Some steep slopes N, W, NW above 700 masl

• Dry slab avalanche • Buried weak layer of faceted snow beneath a crust • Within a meter • The weak layer collapses easily and clean (easy propagation). The collapsing weak layer is thin < 3 cm. • Difficult to trigger • 2 - Medium • Some steep slopes N, NE, E, SE, S, SW, W, NW above 700 masl

Avalanche Problems

• Dry slab avalanche • Buried weak layer of faceted snow near surface • Within half a meter • The weak layer collapses easily and clean (easy propagation). The collapsing weak layer is thin < 3 cm. • Difficult to trigger • Possible • 2 - Medium • Some steep slopes N, NE • Observasjon gjort i nord. Ikke observasjon i andre himmelretninger

Avalanche Problems

• Dry slab avalanche • Buried weak layer of faceted snow near surface • Within half a meter • The weak layer collapses easily and clean (easy propagation). The collapsing weak layer is thin < 3 cm. • Difficult to trigger • Possible • 2 - Medium • Some steep slopes N, NE, E between 0 masl and 600 masl • Jeg observerte skredproblemet i 700-800 moh

Avalanche Problems

• Dry slab avalanche • Buried weak layer of faceted snow near surface • Within half a meter • The weak layer collapses easily and clean (easy propagation). The collapsing weak layer is thin < 3 cm. • Difficult to trigger • Possible • 2 - Medium • Some steep slopes N, NE above 0 masl • Over tregrensen

Avalanche Problems

• Dry slab avalanche • Buried weak layer of faceted snow above a crust • Within a meter • Difficult to trigger • Possible • Few steep slopes

Avalanche Problems

• Dry slab avalanche • Buried weak layer of faceted snow near the ground • Within a meter • A big and identifiable crystal in the weak layer. • Difficult to trigger • Unlikely • 2 - Medium • Few steep slopes N, NE, E above 0 masl • Har ikke sjekket de andre sidene Kun sannsynlig å nå ned til de svake laget der dekke er tynt

Avalanche Problems

• Dry slab avalanche • Buried weak layer of faceted snow beneath a crust • Over one meter • A big and identifiable crystal in the weak layer. • Very difficult to trigger • Unlikely • 2 - Medium • N, E above 900 masl • Svakt lag nås kun der overliggende lag er tynt.

Avalanche Problems

• Dry slab avalanche • Buried weak layer of faceted snow near surface • Within half a meter • The weak layer collapses easily and clean (easy propagation). The collapsing weak layer is thin < 3 cm. • Difficult to trigger • Possible • 2 - Medium • Some steep slopes N, NE • Vi observerte skred problemet over skoggrensen, i helning nord, nord øst.

Avalanche Problems

• Loose snow

Avalanche Problems

• Dry slab avalanche • Buried weak layer of new snow • Within half a meter • The overlying slab is soft. • Very easy to trigger • 2 - Medium • Some steep slopes N, S, SW, W, NW above 700 masl • Vinden har vært fra SØ i dag. Ikke vindpåvirket snø under tregrensen, så aktivt skredproblem fra tregrensen og oppover. Kommet 10 cm tørr nysnø frem til klokken 13:30 ca 400 m o.h. Snør fortsatt S-2

• Dry slab avalanche • Buried weak layer of faceted snow beneath a crust • Within half a meter • The collapsing weak layer is thin < 3 cm. • Very difficult to trigger • 2 - Medium • Few steep slopes S, SW, W above 700 masl • I dagens profil som var mot toppen av et SV-vendt heng, var det en porøs smeltefrys under snøfallet fra to dager siden. Små kant var begynt å danne seg under skaren, men har ikke kontroll på utbredelsen av denne skaren.