Avalanche forecast for Nord-Troms Wednesday 2020-05-20

Highest danger level per day:
2
Moderate
Published:

Be careful in sun-exposed steep slopes and in high north facing areas with dry wind slabs. Avoid areas below cornices/crests.

Illustrasjon av ferdselsråd Wet surface: Move gradually away from the fall line when skiing on large slopes to avoid to be caught by small sluffs you or someone else in your group release while skiing.
Illustrasjon av ferdselsråd Dry surface: Aviod terrain steeper than 30 degrees with fresh wind slabs.
Illustrasjon av ferdselsråd Avoid terrain traps.

Wet snow (loose snow avalanches)

Loose snow

Read more about the avalanche problem
2 - Medium
Spontaneous release
Specific steep slopes
Possible

Wind drifted snow (slab avalanches)

Buried weak layer of new snow

Read more about the avalanche problem
2 - Medium
High additional load
Specific steep slopes
Possible

What are avalanche problems?

Observations the last 3 days (map placed)

2 mm precipitation.
Breeze from north.
-7 °C to -2 °C at 1100 m a.s.l.
Plus degrees up to 400 m a.s.l. during the afternoon.
Cloudy.

For updated info, please visit yr.no
0 mm precipitation.
Breeze from north.
-8 °C to -2 °C at 1100 m a.s.l.
Plus degrees up to 500 m a.s.l. during the afternoon.
Partly cloudy.

For updated info, please visit yr.no

Observations the last 3 days

Nord-Troms / Gáivuotna

Snow

20.05.2020 kl. 19:39

723 masl

StigR@obskorps (***)

Image Of Weather
Image 1 of 4 Of:  Weather Copyright:  StigR@obskorps Comment:  Bilde sør Lyngenfjorden
Image Of Snow Profile
Image 2 of 4 Of:  Snow Profile Copyright:  StigR@obskorps Comment:  I hovedsak fuktig 1F/P hardhet. Enkelte partier har mere vann i seg, men finner samme hardhet. fra 45 cm kan det se et som det er på tur å utvikle seg kantkorn. Skarelag nede i dekket er svakere og bløtere.
Image Of Snow Profile
Image 3 of 4 Of:  Snow Profile Copyright:  StigR@obskorps Comment:  Viser et lag som er glatt og bryter opp ved bruk av spade. Dette etter utført CT test uten brudd.
Image Of Snow Profile
Image 4 of 4 Of:  Snow Profile Copyright: 

Weather

No precipitation -0.7 °C 1 m/s from SE ↖ 50% clouds

Danger Sign

No signs observed

Snow Cover

No snowdrift 0 cm new snow Wet loose snow Moist I skogen mye råtten våt snø uten lagdeling. Over ca 600 moh mere hardpakket men fuktig. Fra ca 700 moh mildværsskare.

Avalanche Danger Assessment

3 Considerable Forecast correct

Tests

CTN Good Ingen brudd i test. Men ved ytterligere påvirkning med spade i bakkant løsner det flere glatte lag rundt 60-70 cm.

Avalanche Problems

Wet slab avalanche Poor bonding between crust and overlying snow Within a meter The weak layer collapses easily and clean (easy propagation). Difficult to trigger 3 - Large N, NE, E, SE, S, SW, W, NW

Avalanche Activity

20. May. During the day Loose wet avalanche Few (2-5). 1 - Small. Spontaneous release Widespread steep slopes. N, NE, E, SE, S, SW, W, NW. Between 900 masl and 200 masl

Snow Profile

48 cm 1F RG M, 42 cm P MF M, 45 cm 1F RG W -0.1 °C @ 0 cm, -0.4 °C @ 10 cm, -0.4 °C @ 20 cm, -0.5 °C @ 30 cm, -0.7 °C @ 40 cm, -0.8 °C @ 50 cm, -0.8 °C @ 60 cm, -0.8 °C @ 70 cm, -0.8 °C @ 80 cm, -0.7 °C @ 90 cm, -0.7 °C @ 100 cm 1 test connected to snow profile

ObsID: 236358

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.

For slope angle maps, download the app Varsom Regobs on App Store | Google Play or see our slope angle map at senorge.no ("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.