Avalanche forecast for Vest-Telemark Sunday 2020-01-26

1
Low
Published:

Be careful in lee areas with wind deposited snow high in the mountains, typically behind ridges, ribs and in gullies. Especially where the wind deposited slabs are thin or soft, a slab avalanche is easier to trigger here. Risk of glide avalanches in the lower parts due to rain/warmth.

Illustrasjon av ferdselsråd Avoid staying for a longer period in steep areas with glide cracks and below areas like this.

Glide avalanches

Wet snow/melting near the ground

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

What are avalanche problems?

Observations the last 3 days (map placed)

0 mm precipitation, up to 6 mm in the most exposed areas.
Moderate gale from southwest.
-3 °C to 1 °C at 1100 m a.s.l.
Plus degrees up to 1100 m a.s.l. during the afternoon.
Partly cloudy.

For updated info, please visit yr.no
1 mm precipitation.
Fresh breeze from southwest.
-3 °C to 0 °C at 1100 m a.s.l.
Plus degrees up to 900 m a.s.l. sunday night.
Partly cloudy.

For updated info, please visit yr.no

Observations the last 3 days

Vest-Telemark / VINJE

Snow

25.01.2020 kl. 13:08

1250 masl

håkon@obskorps (***)

Image Of Snow Cover
Image 1 of 1 Of:  Snow Cover Copyright:  håkon@obskorps Comment:  Viser regnskare med delvis fokksnø

Avalanche Activity

25. Jan. During the day No avalanche activity Noe begrenset sikt

Snow Cover

120 cm in total Moderate snow drift 20 cm new snow Storm slab (soft slab) Dry

Weather

No precipitation 0 °C 10 m/s from W → 80% clouds Har vært vind opp i mot 20ms i natt og noe snøvær.

Tests

CTM12@40cmQ2 Good Nysnøen har festet seg godt til underlaget, bruddet kom i nedsnødd nysnø under hardt skarelag

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. Very difficult to trigger 2 - Medium NE, E, SE above 1000 masl

Avalanche Danger Assessment

2 Moderate Mild temperatur har gjlmlrt at nysnøen har stabilisert seg bra mot tidligere regnskare. Men er dårlig binding i tidligere fokksnø men er vanskelig og løyse ut. Forventes og holde seg stabilt neste døgnet. Forecast correct

Danger Sign

Recent snowdrift Område: Generelt på fjellet

ObsID: 209722

Vest-Telemark / VINJE

Snow

25.01.2020 kl. 12:54

979 masl

Rolf B. (**)

Image Of Danger Sign
Image 1 of 1 Of:  Danger Sign Copyright:  Rolf B.

Avalanche Activity

25. Jan. During the day No avalanche activity

Snow Cover

150 cm in total No snowdrift 20 cm new snow Much loose snow (10-30cm) Dry Tørr innblåst snø over fuktig smelte om vandletet snø.

Weather

from W → 80% clouds

ObsID: 209706

Vest-Telemark / Holtardalen

Snow

24.01.2020 kl. 14:41

1101 masl

svein@obskorps (****)

Image Of Snow Cover
Image 1 of 5 Of:  Snow Cover Copyright:  Comment:  1100moh
Image Of Snow Cover
Image 2 of 5 Of:  Snow Cover Copyright:  Comment:  1100moh
Image Of Snow Profile
Image 3 of 5 Of:  Snow Profile Copyright: 
Image Of Snow Profile
Image 4 of 5 Of:  Snow Profile Copyright: 
Image Of Snow Profile
Image 5 of 5 Of:  Snow Profile Copyright: 

Avalanche Activity

24. Jan. During the day No avalanche activity

Snow Cover

60 cm in total No snowdrift Crust Dry Snødekket er preget av mildværet som har vært. Det er smelte - fryseskare over alt i Raulandsområdet. Snødekket blir hardere i høyden der det er vindskare med is oppå. Det er nesten ikke løs snø tilgjengelig for transport å finne lenger. Nede i snødekket snøen lagdelt med mange smelte-fryselag. Det finnes løs snø mellom smelte-fryselagene.

Weather

No precipitation -1 °C 6 m/s from W →

Tests

ECTN12@20cmQ2 Medium

Avalanche Problems

Dry slab avalanche Poor bonding between layers in wind deposited snow Within half a meter Difficult to trigger 1 - Small NE, E, SE, S above 900 masl

Danger Sign

No signs observed

Avalanche Danger Assessment

2 Moderate Det er stabile forhold i Raulandsområdet akkurat nå. Det kan løse ut skred i løse lag under skaren,men det blir ikke store skred av det. Vær likevel forsiktig i høyden der det ikke har vært plussgrader. Der kan det fortsatt være fokksnø som kan løse ut. Det finnes også et lag med kantkorn nede i dekket,men det ligget under harde lag og er vanskelig å påvirke. Det vil ikke bli noen store endringer de neste 2 døgn

Snow Profile

2 cm K MFcr 0 mm/0 mm D, 3 cm 4F DF 0 mm/0 mm D, 2 cm K MFcr 0 mm/0 mm D, 5 cm 4F DF 0 mm/0 mm D, 2 cm K MFcr 0 mm/0 mm D, 10 cm 1F DF 0 mm/0 mm D, 2 cm K MFcr 0 mm/0 mm D, 5 cm 1F FC 1 mm/0 mm D, 1 cm K MFcr 0 mm/0 mm D, 30 cm P MF 0 mm/0 mm M -2 °C @ 2 cm, -1.7 °C @ 5 cm, -1 °C @ 15 cm, -0.7 °C @ 25 cm, -0.4 °C @ 40 cm, 0 °C @ 55 cm 1 test connected to snow profile

ObsID: 209596

Vest-Telemark / TOKKE

Snow

24.01.2020 kl. 11:15

818 masl

heidi@nve.no (*****)

Image Of Weather
Image 1 of 1 Of:  Weather Copyright:  heidi@nve.no

Weather

Snow 0.5 °C from SW ↗ 80% clouds Lettt snøfokk langs brøytekantene (litt lavere enn skoggrensen). Ser ikke fokksnø i fjellet, men den snøen har kanskje blåst vekk allerede? Lengere øst er der betydelig mindre skyer, fremdeles kraftig vind, men ingen løs tilgjengelig snø.

ObsID: 209527

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.