Avalanche forecast for Nord-Troms Monday 2019-03-25

3
Considerable
Published:

Demanding condiotions. Avoid areas with wind-deposited snow. It is also possible to trigger avalanches in a persistant weak layer in old snow, typically found in bowls and gullies where the snow cover is thin.

New snow (slab avalanches)

Buried weak layer of new snow

Avoid terrain traps and steep slopes until the new snow has stabilized. The avalanche problem is generally widely distributed on any steep slope with deep new snow. Look for cohesive new snow that breaks apart or is poorly bonded to the old snow. Cracks around your skis are a typical dangersign.
3 - Large
Low additional load
Specific steep slopes
Possible

Persistent weak layer (slab avalanches)

Buried weak layer of faceted snow above a crust

Avoid skiing in avalanche terrain (steep terrain more than 30 degrees and in runout zones). NB, remote triggering is likely. 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.
3 - Large
High additional load
Specific steep slopes
Possible

What are avalanche problems?

Observations the last 3 days (map placed)

12 mm precipitation, up to 20 mm in the most exposed areas.
Breeze from west., change to moderate gale from the northwest during the afternoon.
-10 °C to -3 °C at 1100 m a.s.l.
Cloudy.

For updated info, please visit yr.no
5 mm precipitation, up to 12 mm in the most exposed areas.
Fresh breeze from northwest.
-12 °C to -6 °C at 1100 m a.s.l.
Partly cloudy.

For updated info, please visit yr.no

Observations the last 3 days

Nord-Troms / D1907(55340) Nord Troms 2017-2022

Snow

25.03.2019 kl. 06:24

masl

drift@svv (**)

Avalanche Activity

No avalanche activity Gjelder Fv347 Lauksundskaret - Arnøyhamn,

ObsID: 188012

Nord-Troms / D1907(55340) Nord Troms 2017-2022

Snow

25.03.2019 kl. 06:24

masl

drift@svv (**)

Danger Sign

No signs observed

ObsID: 188013

Nord-Troms / KÅFJORD

Snow

24.03.2019 kl. 11:30

422 masl

jan arild@obskorps (*****)

Image Of Snow Profile
Image 1 of 2 Of:  Snow Profile Copyright:  jan arild@obskorps Comment:  Nv vendt heng, skogsgrense. 25 cm4F/1F Fokksnø- 7 cm 4F kantkorn (1mm kornstørrelse)- 30cm K skare. Tot snødybde 110 cm
Image Of Tests
Image 2 of 2 Of:  Tests Copyright: 

Tests

ECTP14@25cmQ1 Medium

Weather

Sleet -1 °C from SW ↗ 100% clouds Økende vind og byger. Null sikt over tregrensen

Avalanche Problems

Dry slab avalanche Buried weak layer of faceted snow above a crust The weak layer collapses easily and clean (easy propagation). A big and identifiable crystal in the weak layer. Difficult to trigger 2 - Medium N, NE, E, SE, S, SW, W, NW below 700 masl

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. Easy to trigger 2 - Medium N, NE, E above 500 masl

Danger Sign

No signs observed

Avalanche Activity

24. Mar. During the day (+01:00) No avalanche activity

Snow Cover

Wind slab (hard slab) Moist Snøbyger og vind over tregrensen. Ingen sikt. Sannsynlig at det vil legge seg ustabile fokksnøflak i bratte leheng

Avalanche Danger Assessment

3 Considerable Pågående snøvær med vind vil legge ustabile fokksnøflak i le for sv vind. Skredfaren vil også styres av tilstedeværelse av vedvarende svakt lag av kantkorn som kan gå skred på ved stor tilleggsbelastning. I høyden er dette laget mer beskyttet i snødekket

ObsID: 187894

Nord-Troms / D1907(55340) Nord Troms 2017-2022

Snow

24.03.2019 kl. 09:26

masl

drift@svv (**)

Weather

No precipitation 5 °C Arnøya (0moh) kl 07:00 0 cm nysnø akkumulert siste døgn.

Danger Sign

No signs observed

Avalanche Activity

No avalanche activity Gjelder Fv347 Lauksundskaret - Arnøyhamn,

ObsID: 187861

Nord-Troms / D1907(55340) Nord Troms 2017-2022

Snow

23.03.2019 kl. 08:45

masl

drift@svv (**)

Weather

Snow 5 °C Arnøya (0moh) kl 07:00 3 cm nysnø akkumulert siste døgn. Snøfokk siste 12 timer.

Danger Sign

Quick temperature change

Recent snowdrift

Avalanche Activity

No avalanche activity Gjelder Fv347 Lauksundskaret - Arnøyhamn,

ObsID: 187701

Nord-Troms / KÅFJORD

Snow

22.03.2019 kl. 11:29

616 masl

jan arild@obskorps (*****)

Image Of Notes
Image 1 of 1 Of:  Notes Copyright:  jan arild@obskorps Comment:  650 moh NV vendt side. Profil tatt ned til gammel hardt skarelag. 5cm 4F fokksnø / 20 cm 1F fokksnø / 7 cm 4F begynnende kantkorn / 2 cm K skare/ tynt lag F kantkorn / over ganmel skarelaget

Avalanche Problems

Dry slab avalanche Buried weak layer of faceted snow above a crust A big and identifiable crystal in the weak layer. Difficult to trigger 2 - Medium N, NE, E, SE, S, SW, W, NW below 600 masl

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. Easy to trigger 2 - Medium N, NE, E above 400 masl

Danger Sign

No signs observed

Avalanche Activity

22. Mar. During the day (+01:00) No avalanche activity

Avalanche Danger Assessment

3 Considerable Ustabile fokksnøflak i le for sv vind etter siste døgn med nysnø kombinert med vind. Kan lett påvirkes og løse ut skred selv om det ikke ga faretegn i form av skytende sprekker. Høyde under 700 m er tilstedeværelse av vedvarende svakt lag av kantkorn over gammel skarelag som kan påvirkes med stor tilleggsbelastning. Vurderer dette laget som godt beskyttet høyere i fjellet. Forventet vær vil gjøre snødekket mer ustabilt med mildvær og regn. Naturlig utløste våte flakskred er også mulig Forecast correct

ObsID: 187593

Nord-Troms / KÅFJORD

Snow

22.03.2019 kl. 11:12

547 masl

jan arild@obskorps (*****)

Image Of Snow Cover
Image 1 of 1 Of:  Snow Cover Copyright:  jan arild@obskorps

Snow Cover

Some snow drift Storm slab (soft slab) Dry Over tregrensen myke fokksnøflak i le fo SV. Ustabil. Over rygger gammel fokksnø /skare

ObsID: 187590

Nord-Troms / KÅFJORD

Snow

22.03.2019 kl. 10:31

250 masl

jan arild@obskorps (*****)

Image Of Snow Profile
Image 1 of 1 Of:  Snow Profile Copyright:  jan arild@obskorps Comment:  15 cm nysnø over 18 cm 4F fokksnø over 4 cm 4F- kantkorn våt

Snow Cover

18 cm new snow Dry

ObsID: 187573

Nord-Troms / KÅFJORD

Snow

22.03.2019 kl. 10:05

26 masl

jan arild@obskorps (*****)

Image Of Snow Cover
Image 1 of 1 Of:  Snow Cover Copyright:  jan arild@obskorps

Snow Cover

15 cm in total

ObsID: 187553

Nord-Troms / KÅFJORD

Snow

22.03.2019 kl. 09:55

9 masl

jan arild@obskorps (*****)

Weather

Snow 100% clouds

Snow Cover

25 cm new snow Moist 25 cm nysnø. Fuktig ved havnivå

ObsID: 187547

Nord-Troms / D1907(55340) Nord Troms 2017-2022

Snow

22.03.2019 kl. 08:06

masl

drift@svv (**)

Weather

Snow 2 °C Arnøya (0moh) kl 06:00 7 cm nysnø akkumulert siste 12 timer. Snøfokk siste 12 timer.

Danger Sign

Recent snowdrift

Avalanche Activity

No avalanche activity Gjelder Fv347 Lauksundskaret - Arnøyhamn,

ObsID: 187521

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.