Avalanche forecast for Vest-Telemark Monday 2019-12-16

2
Moderate
Published:

Locally unstable conditions. Be aware that there can be pockets with persistent weak layers and unstable wind slabs.

Illustrasjon av ferdselsråd Aviod terrain steeper than 30 degrees and runout zones where the avalanche problem is present. Remote triggering is possible.
Illustrasjon av ferdselsråd NB: Identifying the avalanche problem is very difficult.
Illustrasjon av ferdselsråd Avoid terrain traps.

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

Persistent weak layer (slab avalanches)

Buried weak layer of faceted snow near the ground

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

What are avalanche problems?

Observations the last 3 days (map placed)

5 mm precipitation.
Breeze from east.
-7 °C to -3 °C at 1100 m a.s.l.
Plus degrees up to 300 m a.s.l. during the afternoon.
Cloudy.

For updated info, please visit yr.no
0 mm precipitation.
Breeze from south.
-10 °C to -4 °C at 1100 m a.s.l.
Plus degrees up to 400 m a.s.l. during the evening.
Cloudy.

For updated info, please visit yr.no

Observations the last 3 days

Vest-Telemark / VINJE

Snow

16.12.2019 kl. 13:30

1081 masl

tmeling@nortind.no (**)

Weather

No precipitation Lite til ingen vind, skiftende skydekke med prrioder med helt klart

Danger Sign

Whumpf sound Område: Generelt på fjellet

Avalanche Activity

16. Dec. During the day No avalanche activity

ObsID: 202285

Vest-Telemark / VINJE

Snow

15.12.2019 kl. 14:00

1144 masl

håkon@obskorps (***)

Image Of Snow Cover
Image 1 of 2 Of:  Snow Cover Copyright:  håkon@obskorps Comment:  Viser snødekket ved 1000moh. Mer vindpåvirket I høyden
Image Of Snow Profile
Image 2 of 2 Of:  Snow Profile Copyright: 

Tests

CTE3@10cmQ2 Medium Var puddersnøen som løste ut.

Weather

No precipitation -4 °C 0 m/s from N ↓ 90% clouds Kommet 10 cm snø siste døgn men vind fra øst

Snow Cover

No snowdrift 10 cm new snow Much loose snow (10-30cm) Dry Er sterkt varierert snødybde da det har blåst mye siste uken.

Avalanche Danger Assessment

2 Moderate Er svake bindinger i fokksnøen, og henger dårlig på skare utsatte kuler. Dagens profil så var det ikke kantkorn, men det har ikke vært vær som tilsvarer at det skal vær borte. Det forventes en økt skredfare grunnet varsel om 10cm snø og vind på ca 10ms. Fra vestlig retning mandag. Forecast correct

Danger Sign

Recent snowdrift Område: Generelt på fjellet

Avalanche Problems

Dry slab avalanche Poor bonding between crust and overlying snow Within half a meter The overlying slab is soft. Difficult to trigger 2 - Medium S, SW, W, NW

Dry slab avalanche Poor bonding between layers in wind deposited snow Within half a meter The overlying slab is soft. Easy to trigger 2 - Medium SW, W, NW above 1000 masl

Avalanche Activity

15. Dec. During the day No avalanche activity Begrenset sikt

Snow Profile

10 cm F PP 2 mm D, 30 cm 1F DF 1 mm D, 0.5 cm K IF 1 mm D, 1 cm 1F DF 1 mm D, 1 cm P MFcr 1 mm D, 40 cm 1F DF 1 mm D, 5 cm 1F DF 1 mm D

ObsID: 202171

Vest-Telemark / VINJE

Snow

15.12.2019 kl. 12:20

994 masl

Ida (Unknown)

Image Of Danger Sign
Image 1 of 2 Of:  Danger Sign Copyright:  Ida
Image Of Danger Sign
Image 2 of 2 Of:  Danger Sign Copyright:  Ida

Danger Sign

No signs observed Område: Generelt på fjellet. Beskrivelse: Tre svake lag ved profilgraving (østvendt side) Skle ikke ut ved tap-test.

ObsID: 202177

Vest-Telemark / Raulandsfjell

Snow

13.12.2019 kl. 15:22

1155 masl

svein@obskorps (****)

Image Of Snow Cover
Image 1 of 3 Of:  Snow Cover Copyright:  Comment:  1150moh mot NØ
Image Of Snow Cover
Image 2 of 3 Of:  Snow Cover Copyright:  Comment:  1150moh mot V
Image Of Snow Profile
Image 3 of 3 Of:  Snow Profile Copyright: 

Weather

Snow -1 °C 2 m/s from NE ↙ 100% clouds

Snow Cover

60 cm in total No snowdrift 5 cm new snow Some loose snow (1-10cm) Dry Under skoggrensa der vinden ikke har tatt er det ca 25cm med tørr løssnø som ligger oppå det gamle hardere laget. Over skoggrensa og der vinden har fått tak, er det mye mindre løssnø tilgjengelig for transport. Fokksnøen er stabil og det er vanskelig å få til brudd.

Avalanche Danger Assessment

1 Low Ingen skred observert. Stort sett stabile forhold i fokksnøen akkurat nå i Raulandsområdet. Hvis det kommer inn mere vind , så vil skredfaren øke noe.

Danger Sign

Recent snowdrift Små mengder

Avalanche Problems

Dry slab avalanche Poor bonding between layers in wind deposited snow Within half a meter The collapsing weak layer is thin < 3 cm. Difficult to trigger 1 - Small S, SW above 1000 masl

Snow Profile

3 cm F PP 0 mm/0 mm D, 22 cm 1F DF 0 mm/0 mm D, 10 cm 4F DF 0 mm/0 mm D, 20 cm P DF 0 mm/0 mm D, 20 cm 4F RG 1 mm/0 mm D

ObsID: 201962

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.