Avalanche warning for region Jotunheimen Saturday 19.01.2019

Avalanche Problems

• Dry slab avalanche • Buried weak layer of new snow • Within half a meter • The weak layer collapses easily and clean (easy propagation). • Very easy to trigger • Very likely • Many steep slopes NE, E, SE

Avalanche Problems

• Dry slab avalanche • Buried weak layer of new snow • 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 • Many steep slopes E, SE, S above 900 masl • Dette svake laget ble påvist både ved snøprofil, i testheng og ved sjekk av drønn i snøen.

• 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. A big and identifiable crystal in the weak layer. • Very difficult to trigger • 2 - Medium • Many steep slopes N, NE, E, SE, S, SW, W, NW • Laget er i mange bratte heng der skaren er bevart og bærende under fokksnø/nysnø. I høgden fra 900 - 1100 var skaren mer brytende og sprø, uten overliggende kantkorn som har betydning for stabilitet. Her i dette området var laget mye vanskeligere å løse ut enn ved Bråtå / Breheimen.

Avalanche Problems

• Dry slab avalanche • Buried weak layer of new snow • Within half a meter • The overlying slab is soft. A big and identifiable crystal in the weak layer. • Easy to trigger • Possible • 1 - Small • Some steep slopes NE, E, SE between 2000 masl and 1000 masl • Skredproblemey er gjeldende der det er fokksnøflak. Over skoggrensa.

Avalanche Problems

• Dry slab avalanche • Buried weak layer of new 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 • Some steep slopes E, SE, S not between 1500 masl and 900 masl • Skredproblemet slik e ser det er foreløpig et nedføyka lag med nysnø fra siste dagers snøfall kombinert med vind. Utbredelsen varier med vind og lokale forhold

• Dry slab avalanche • Buried weak layer of faceted snow above a crust • Within a meter • The weak layer collapses easily and clean (easy propagation). A big and identifiable crystal in the weak layer. • Difficult to trigger • 3 - Large • Some steep slopes E, SE, S above 1500 masl • Fikk brudd i kantkornlag på omlag 1 meter, på omlag 1300 moh. Kom på ECTP13. Q2 brudd. Bør følge med på utvikling av kantkornlag mtp temperatur fremover.

Avalanche Problems

• Dry slab avalanche • Buried weak layer of new snow • Within a meter • E

Avalanche Problems

• Dry slab avalanche • Buried weak layer of new snow • Within half a meter • The overlying slab is soft. A big and identifiable crystal in the weak layer. • Easy to trigger • Possible • 2 - Medium • Some steep slopes E, SE, S above 1300 masl • Snødekket virker generelt stabilt, men øverst i dekket finner vi et nedføyket lag med nysnø. Der flaket er hardt vil brudd kunne propagere.

Avalanche Problems

• Dry slab avalanche • Buried weak layer of new snow • 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 • Possible • 2 - Medium • Many steep slopes E, SE, S above 900 masl

• Dry slab avalanche • Buried weak layer of faceted snow above a crust • Within a meter • The weak layer collapses easily and clean (easy propagation). The collapsing weak layer is thin < 3 cm. • Easy to trigger • Possible • 3 - Large • Many steep slopes NE, E, SE, S, SW above 900 masl • Vanskelig å bedømme lett eller vanskelig