Avalanche forecast for Vest-Telemark Sunday 2021-02-28

Highest danger level per day:
2
Moderate
Published:

Be careful in steep slopes with soft and wet snow, a skier can trigger avalanches here, or they can release when the temperature increases. At high altitudes, a persistent layer of facets are buried in the snowpack in isolated areas that may give big avalanches.

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

Persistent weak layer (slab avalanches)

Buried weak layer of surface hoar

Read more about the avalanche problem
3 - Large
High additional load
Isolated steep slopes
Possible

Wet snow (loose snow avalanches)

Loose snow

Read more about the avalanche problem
1 - Small
Spontaneous release
Specific steep slopes
Possible

What are avalanche problems?

Observations the last 3 days (map placed)

0 mm precipitation.
Fresh breeze from northwest., change to strong breeze from the northwest during the afternoon.
-1 °C to 2 °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 northwest.
-3 °C to 4 °C at 1500 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

Vest-Telemark / Valle

Snow

28.02.2021 kl. 15:58

929 masl

ElisabethS@Obskorps (***)

Image Of Avalanche Activity
Image 1 of 1 Of:  Avalanche Activity Copyright:  ElisabethS@Obskorps Comment:  Typisk skred som kommer på våren. Svalberg.

Avalanche Activity

28. Feb. During the day (+01:00) Slush avalanche One (1). 1 - Small. Spontaneous release Isolated steep slopes. SE, S, SW. Above 800 masl

ObsID: 258393

Vest-Telemark / Tinn

Snow

28.02.2021 kl. 13:48

1221 masl

Sturla (Unknown)

Image Of Tests
Image 1 of 2 Of:  Tests Copyright:  Sturla Comment:  Bruddet gikk i iskrystaller under islag
Image Of Tests
Image 2 of 2 Of:  Tests Copyright:  Sturla

Tests

LBT@60cmQ3 Bruddet gikk veldig lett, kun etter 2 slag. Snøen over var imidlertid meget hard og bærer godt

Snow Cover

No snowdrift Crust Dry Stort sett hard bærende skare overalt over tregrensen

ObsID: 258431

Vest-Telemark / Tinn

Snow

27.02.2021 kl. 23:12

605 masl

drift@svv (**)

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Image 1 of 4 Of:  Not given Copyright:  drift@svv Comment:  Statens vegvesen
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Incident

Snow Traffic stopped Road

Avalanche Observation

27. Feb 23:12 (+01:00) Snø på FV3430 løsnet fra vegskjæring 0-50m. Blokkert veglengde: Kun i grøft.

ObsID: 258605

Vest-Telemark / Smørklepp

Snow

27.02.2021 kl. 17:47

508 masl

drift@svv (**)

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Image 1 of 7 Of:  Not given Copyright:  drift@svv Comment:  Statens vegvesen
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Incident

Snow Traffic stopped Road

Avalanche Observation

27. Feb 17:47 (+01:00) Snø på EV134 løsnet fra vegskjæring 0-50m. Anslått skredvolum på veg: <1m^3.Blokkert veglengde: 0-10m.

ObsID: 259105

Vest-Telemark / Vinje

Snow

27.02.2021 kl. 13:29

1215 masl

håkon@obskorps (***)

Image Of Weather
Image 1 of 3 Of:  Weather Copyright:  håkon@obskorps
Image Of Snow Cover
Image 2 of 3 Of:  Snow Cover Copyright:  håkon@obskorps Comment:  Viser snødekket som ligger etter siste snøfall og gammel snø i bakgrunnen.
Image Of Snow Profile
Image 3 of 3 Of:  Snow Profile Copyright: 

Tests

CTV@45cmQ2 Poor

Avalanche Danger Assessment

2 Moderate Kantkorn er fremdels gjeldene problem i høyden. Lengre nede er det vår problematiken som er gjeldene. Fare for skavelbrudd under solpåvirknig og glideskred. Forventes og holde seg stabilt. Forecast correct

Snow Cover

No snowdrift Storm slab (soft slab) Moist

Danger Sign

Recent cracks Område: I denne fjellsiden

Weather

No precipitation -1 °C 10 m/s from W → 50% clouds

Avalanche Activity

27. Feb. During the day (+01:00) Cornice Few (2-5). 1 - Small. Spontaneous release Specific steep slopes. SW, W, NW

Avalanche Problems

Wet slab avalanche Buried weak layer of faceted snow near surface Within half a meter The weak layer collapses easily and clean (easy propagation). The collapsing weak layer is thin < 3 cm. The overlying slab is soft. Easy to trigger 2 - Medium SW, W, NW above 1200 masl

Snow Profile

45 cm 1F RG 1 mm M, 2 cm 4F SH 2 mm M, 5 cm 1F RG 1 mm D, 2 cm 4F SH 2 mm M, 70 cm P RG 1 mm W Det er framleis problemer med kantkorn, lengre nede er det rene påskestemningen.

ObsID: 258232

Vest-Telemark / Vinje

Snow

27.02.2021 kl. 12:31

1404 masl

svein@obskorps (****)

Image Of Snow Cover
Image 1 of 1 Of:  Snow Cover Copyright:  svein@obskorps Comment:  1400moh

Tests

ECTN25@35cmQ2 Good

Avalanche Danger Assessment

2 Moderate Det finnes fortsatt lag med kantkorna snø over ca 1300 moh. Fokksnøen i høyden har god binding til den gamle snøen. Det er våte løssnøskred under skoggrensa som er det største skredproblemet nå. Økende skredfare der sola og varmen kan påvirke snødekket

Snow Cover

90 cm in total No snowdrift Crust Dry

Weather

No precipitation -1 °C 3 m/s from W → 90% clouds

Avalanche Activity

27. Feb. During the day (+01:00) No avalanche activity

Avalanche Problems

Dry slab avalanche Buried weak layer of faceted snow above a crust Within half a meter The collapsing weak layer is thin < 3 cm. Difficult to trigger 3 - Large N, NE, E, SE, S, SW, W, NW above 1300 masl

Snow Profile

20 cm P DF D, 5 cm K MF D, 10 cm 1F DF D, 5 cm K MF D, 2 cm 1F FC 2 mm D, 50 cm P MF D 1 tests connected to snow profile

ObsID: 258205

Vest-Telemark / Valle

Snow

26.02.2021 kl. 21:32

1022 masl

ElisabethS@Obskorps (***)

Image Of Snow Cover
Image 1 of 5 Of:  Snow Cover Copyright:  ElisabethS@Obskorps
Image Of Snow Profile
Image 2 of 5 Of:  Snow Profile Copyright:  ElisabethS@Obskorps
Image Of Snow Profile
Image 3 of 5 Of:  Snow Profile Copyright:  ElisabethS@Obskorps
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Image 4 of 5 Of:  Snow Profile Copyright:  ElisabethS@Obskorps
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Image 5 of 5 Of:  Snow Profile Copyright: 

Tests

LBT@40cmQ3

LBT@7cmQ3 Rufsete brudd

Avalanche Danger Assessment

2 Moderate Snøen var fast og hadde godt stabelitet. Det øverste skarelaget kan man enkelt knekke, men man synker rett kjennon 30-40cm. Ved minusgrader vil skarelaget bli fastere og forhåpentligvis de underliggende lagene også binde seg. . Et evt Påfyll av snø og vind vil ha et fin glidelg på skaren. Forecast correct

Snow Cover

140 cm in total No snowdrift Wet loose snow 2cm fuktig nysnå oppå 5cm skare. Skare bærer skiløper. I snitt er det 110cm rundt om i terrenget . Toppene og ryggene er nesten bare, stein og tuver stikker fram.

Danger Sign

No signs observed

Weather

No precipitation -0.2 °C 3 m/s from NW ↘ 30% clouds

Avalanche Activity

26. Feb. During the day (+01:00) No avalanche activity

Avalanche Problems

Loose snow

Snow Profile

2 cm F DF 1 mm M, 5 cm K MFcr, 13 cm 4F MF 4 mm W, 12 cm 1F RG 1 mm M, 6 cm P RG 1 mm M, 1 cm I MFcr, 15 cm P RG 1 mm M, 1 cm I MFcr, 25 cm P RG 1 mm M, 1 cm K MFcr, 20 cm 4F MF 4 mm M, 20 cm P MF 2 mm M -0.7 °C @ 0 cm, -0.4 °C @ 20 cm, -0.4 °C @ 40 cm, -0.4 °C @ 60 cm, -0.5 °C @ 80 cm, -0.5 °C @ 100 cm, -0.6 °C @ 120 cm

ObsID: 258113

Vest-Telemark / Byrte

Snow

26.02.2021 kl. 11:54

484 masl

drift@svv (**)

Image Of Not given
Image 1 of 2 Of:  Not given Copyright:  drift@svv Comment:  Statens vegvesen
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Image 2 of 2 Of:  Not given Copyright:  drift@svv Comment:  Statens vegvesen

Avalanche Observation

26. Feb 11:54 (+01:00) Snø på FV3408 løsnet fra fjell/dalside 0-50m. Blokkert veglengde: 0-10m.

ObsID: 259090

Vest-Telemark / Mjonøy

Snow

26.02.2021 kl. 01:43

521 masl

drift@svv (**)

Image Of Not given
Image 1 of 1 Of:  Not given Copyright:  drift@svv Comment:  Statens vegvesen

Avalanche Observation

26. Feb 01:43 (+01:00) Snø på EV134 løsnet fra fjell/dalside 0-50m. Anslått skredvolum på veg: <10m^3.

ObsID: 258611

Vest-Telemark / Tinn

Snow

25.02.2021 kl. 14:42

1350 masl

Sturla (Unknown)

Image Of Notes
Image 1 of 5 Of:  Notes Copyright:  Sturla
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Image 2 of 5 Of:  Notes Copyright:  Sturla
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Image 3 of 5 Of:  Notes Copyright:  Sturla
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Image 4 of 5 Of:  Notes Copyright:  Sturla
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Image 5 of 5 Of:  Snow Profile Copyright: 

Snow Profile

7 cm K MFcr 2 mm D, 7 cm P RG 1 mm M, 12 cm 4F RG 1 mm M, 2 cm K MFcr 1 mm M, 20 cm 1F RG M, 6 cm P MFcr 1 mm M, 40 cm F RG 1 mm M 0 °C @ 12 cm

Notes

Testen ble tatt i fokksnø østvendt heng. Snødekke var stort bærende skare fra skoggrense og opp.

Tests

LBT@7cmQ3 Bruddet gikk forholdsvis lett i overgang skare fokksnø

Snow Cover

130 cm in total No snowdrift Crust Dry

Danger Sign

No signs observed

Weather

No precipitation 3 °C 10 m/s from NW ↘ 50% clouds

Avalanche Problems

Loose wet avalanche Difficult to trigger 2 - Medium S, SW, W between 1300 masl and 600 masl

ObsID: 257889

Vest-Telemark / Haukelili

Snow

25.02.2021 kl. 12:48

614 masl

drift@svv (**)

Image Of Not given
Image 1 of 1 Of:  Not given Copyright:  drift@svv Comment:  Statens vegvesen

Avalanche Observation

25. Feb 12:48 (+01:00) Snø på RV9 løsnet fra vegskjæring 0-50m. Blokkert veglengde: 0-10m.

ObsID: 257842

Vest-Telemark / Tinn

Snow

25.02.2021 kl. 11:44

653 masl

drift@svv (**)

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Image 2 of 3 Of:  Not given Copyright:  drift@svv Comment:  Statens vegvesen
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Incident

Snow Traffic stopped Road

Avalanche Observation

25. Feb 11:44 (+01:00) Snø på FV37 løsnet fra vegskjæring 0-50m.

ObsID: 258603

Vest-Telemark / Mellom urbøuri og Roe

Snow

25.02.2021 kl. 10:02

822 masl

drift@svv (**)

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Avalanche Observation

25. Feb 10:02 (+01:00) Snø på FV362 løsnet fra vegskjæring 0-50m. Blokkert veglengde: 0-10m.

ObsID: 257841

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.