Avalanche forecast for Nord-Troms Monday 2021-04-19

Highest danger level per day:
3
Considerable
Published:

High temperature elevates the danger of wet avalanches. Be careful with recently formed wind slabs at high elevations. If the heat effect the deep persistent weak layers it could result in very big avalanche. Remember to use slightly different approaches on wet and dry snow.

Illustrasjon av ferdselsråd Wet surface: Avoid slopes steeper than 35 degrees with wet loose snow and runout zones.
Illustrasjon av ferdselsråd Dry surface: Avoid terrain steeper than 30 degrees and runout zones. Remote triggering is likely.
Illustrasjon av ferdselsråd Avoid terrain traps.

Wet snow (loose snow avalanches)

Loose snow

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

Persistent weak layer (slab avalanches)

Buried weak layer of faceted snow beneath a crust

Read more about the avalanche problem
4 - Very large
Spontaneous release
Isolated steep slopes
Possible

What are avalanche problems?

Observations the last 3 days (map placed)

0 mm precipitation.
Breeze from southwest.
-10 °C to 1 °C at 1100 m a.s.l.
Plus degrees up to 1000 m a.s.l. during the afternoon.
Partly cloudy.

For updated info, please visit yr.no
0 mm precipitation.
Fresh breeze from southwest.
-6 °C to 5 °C at 1100 m a.s.l.
Plus degrees up to 1600 m a.s.l. during the afternoon.
Clear skies.

For updated info, please visit yr.no

Observations the last 3 days

Nord-Troms / D1907(CLA20) Nord Troms 2017-2022

Snow

19.04.2021 kl. 06:46

6 masl

drift@svv (**)

Danger Sign

No signs observed

Weather

No precipitation 5 °C Arnøya (0moh) kl 06:47

Avalanche Activity

No avalanche activity Gjelder Fv7940 Lauksundskaret - Arnøyhamn,

ObsID: 268232

Nord-Troms / Gáivuotna

Snow

18.04.2021 kl. 14:48

965 masl

StigR@Obskorps (***)

Image Of Weather
Image 1 of 4 Of:  Weather Copyright:  StigR@Obskorps
Image Of Snow Cover
Image 2 of 4 Of:  Snow Cover Copyright:  StigR@Obskorps
Image Of Snow Profile
Image 3 of 4 Of:  Snow Profile Copyright:  StigR@Obskorps
Image Of Snow Profile
Image 4 of 4 Of:  Snow Profile Copyright: 

Avalanche Activity

18. Apr. During the day Loose wet avalanche One (1). 1 - Small. Spontaneous release Isolated steep slopes. S. Above 700 masl

Avalanche Problems

Loose wet avalanche Loose snow Spontaneous release 1 - Small E, SE, S, SW, W above 600 masl

Dry slab avalanche Buried weak layer of faceted snow beneath a crust Over one meter Very difficult to trigger 4 - Very large N, NE, E, SE, S, SW, W, NW above 500 masl

Dry slab avalanche Poor bonding between layers in wind deposited snow Within a meter Difficult to trigger 2 - Medium N, NW

Avalanche Danger Assessment

2 Moderate Det er komplekst i fjellet men virker å hastabilisert seg. Mildværet vil påvirke i sider mot solen og innstråling vil gi flere skred i bratte sider. Forecast too high

Danger Sign

Quick temperature change Område: Fylket/varslingsregion. Beskrivelse: Høy temp og fuktig sne opp til ca800 moh. Derfra tørrere og vindpåvirket.

Snow Profile

17 cm 1F RG D, 23 cm 4F DF D, 42 cm 1F RG D, 20 cm P RG D

Snow Cover

300 cm in total No snowdrift 0 cm new snow Elevation of new snow 400 masl. Snow line at 0 masl. Layered snow begins at 400 masl Wind slab (hard slab) Dry I skogen myk ogpåvirket av mildværet. Bryter opp rundt ski, men ikke skytende sprekker. Våt sne opp til700 moh. Derfra Mie tørrere selv moden stedvis over detter er fuktig. Fra 900 moh tørr og vindpåvirket over konvekser. Mykt i forsenkninger.

Tests

ECTX Good

Weather

No precipitation 0.4 °C 5 m/s from S ↑ 35% clouds Sol og noe disig.

ObsID: 268170

Nord-Troms / D1907(CLA20) Nord Troms 2017-2022

Snow

18.04.2021 kl. 09:51

6 masl

drift@svv (**)

Danger Sign

No signs observed

Weather

No precipitation 5 °C Arnøya (0moh) kl 07:00

Avalanche Activity

No avalanche activity Gjelder Fv7940 Lauksundskaret - Arnøyhamn,

ObsID: 268099

Nord-Troms / D1907(CLA20) Nord Troms 2017-2022

Snow

17.04.2021 kl. 11:56

391 masl

drift@svv (**)

Danger Sign

Much water in the snow kraftig solstråling

Quick temperature change

Weather

No precipitation 6 °C Oladalen (100moh) kl 11:56

Avalanche Activity

17. Apr 11:59 - 16. Apr 11:59 Dry slab avalanche 3 - Large. Spontaneous release NW. Between 500 masl and 400 masl Gjelder Ev6 Mettevoll - Rakkenes (Kvænangsfjellet),

ObsID: 267967

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.