Avalanche forecast for Nordenskiöld Land Tuesday 2019-02-12

2
Moderate
Published:

Wind deposited snow could rest on a persistent weak layer of facets. In some areas an avalanche can be triggered by snowmobiles. There are wind-slabs in the high mountains, most in eastern part of the region.

Wind drifted snow (slab avalanches)

Poor bonding between layers in wind deposited snow

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.
2 - Medium
High additional load
Specific steep slopes
Possible

Persistent weak layer (slab avalanches)

Buried weak layer of faceted snow near surface

Keep distance to each other when traveling in avelanche terrain. 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 and cracking which means that you influence weak layers and should avoid avalanche terrain. However, absence of signs does not mean it is safe.
3 - Large
High additional load
Specific steep slopes
Unlikely

What are avalanche problems?

Observations the last 3 days (map placed)

1 mm precipitation.
Breeze from northeast.
-19 °C to -12 °C at 700 m a.s.l.
Cloudy.

For updated info, please visit yr.no
3 mm precipitation.
Fresh breeze from east.
-22 °C to -15 °C at 700 m a.s.l.
Cloudy.

For updated info, please visit yr.no

Observations the last 3 days

Nordenskiöld Land / SVALBARD

Snow

11.02.2019 kl. 10:27

25 masl

Martini@unis (****)

Image Of Weather
Image 1 of 2 Of:  Weather Copyright:  Martini@unis Comment:  Mot Adv dalen fra unis
Image Of Weather
Image 2 of 2 Of:  Weather Copyright:  Martini@unis Comment:  Mot Sukkertoppen fra Unis

Weather

Snow -6 °C 5 m/s from S ↑ 100% clouds Lett snø, snøbyger på morgenen mandag. Stigende temperatur igjennom natta. Perioder med lett snøfokk ned i Longyearbyen, men ikke mye løs snø som flyttes.

ObsID: 180289

Nordenskiöld Land / SVALBARD

Snow

10.02.2019 kl. 15:00

150 masl

mnskeyser (Unknown)

Image Of Snow Profile
Image 1 of 2 Of:  Snow Profile Copyright:  mnskeyser
Image Of Snow Profile
Image 2 of 2 Of:  Snow Profile Copyright:  mnskeyser

Snow Cover

35 cm in total No snowdrift Wind slab (hard slab) Dry

Avalanche Problems

Buried weak layer of faceted snow above a crust Within half a meter A big and identifiable crystal in the weak layer.

A big and identifiable crystal in the weak layer.

Weather

No precipitation -17 °C 5 m/s from E ←

ObsID: 180185

Nordenskiöld Land / Larshjerta

Snow

09.02.2019 kl. 12:30

729 masl

mrtnlvs (Unknown)

Image Of Snow Profile
Image 1 of 1 Of:  Snow Profile Copyright: 

Avalanche Problems

Buried weak layer of surface hoar Within half a meter A big and identifiable crystal in the weak layer.

Weather

No precipitation -15 °C 3 m/s from SE ↖ 40% clouds Lett snøfokk

Tests

CTH23@38cmQ1 Good sklir ikke ut

ObsID: 180011

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.