Avalanche forecast for Nordenskiöld Land Wednesday 2017-04-26


There is a persistent weak layer buried in the snow pack. Show special care in slopes beneath cornices and where storm slabs have formed above the week layers. The sun is closing on zenith and the bonds in a otherwise stable snow pack may get weaker, thus making triggering more likely.

Persistent slab avalanches

Buried weak layer of faceted snow above a crust
Slab avalanche
3 - Medium
High additional load
Some steep slopes

Keep distance to each other and to release areas. NB, remote triggering is possible. Make very conservative route choices, especially in unknown terrain, after snowfall and if temperatures rise. Identifying areas where the weak layer is present might be difficult and requires experience. Danger signs are whoumpf-sounds, cracking and recent avalanches. However, absence of signs does not mean it is safe.

Wind slab avalanches

Poor bonding between layers in wind deposited snow
Slab avalanche
2 - Small
High additional load
Some steep slopes

Be careful and keep distance to each other in steep (above 30 degrees) terrain with fresh wind deposited snow, especially convex terrain. An avalanche is easier to trigger where wind slabs are thin or soft. Look for areas where the wind recently has deposited snow, typically behind ridges, ribs and in gullies. Remember that local wind effects will cause variation in where the wind slabs occur.
Avalanche danger scale

For safer travel:

The bulletin does not include a detailed text about the avalanche conditions. This is only given in Norwegian. Translate it using google translate if you like. The text result will be informative, and most likely amusing

For planning your trip and recognizing avalanche terrain, use maps.

Norway has 1:50 000 maps for the whole country. Maps can be bought at bookstores and sports shops, or printed from the net.

Visit www.ut.no for topographic maps online. For slope angle maps, see NGI slope angel maps ("helning" means slope angle).

Modelled snowpack and historic and current weather information can be found on the webpage senorge.no. This site uses information from the weather stations and interpolate values from the stations for gridded maps.

Detailed weather forecast can be found online at www.yr.no or www.storm.no. Yr.no is also in English, but the weather in text format is only given in Norwegian.