Avalanche forecast for Vest-Telemark Thursday 2020-12-17

Highest danger level per day:
2
Moderate
Published:

Locally unstable conditions. Use caution in steep terrain with wind deposited snow.

Illustrasjon av ferdselsråd Aviod terrain steeper than 30 degrees with fresh wind slabs.
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
Low additional load
Specific steep slopes
Possible

What are avalanche problems?

Observations the last 3 days (map placed)

Little to no precipitation.
Breeze from southwest.
-4 °C to -1 °C at 1100 m a.s.l.
Cloudy.

For updated info, please visit yr.no
8-12 mm precipitation.
Strong breeze from southeast, changing to breeze from the southwest during the afternoon.
-3 °C to 0 °C at 1100 m a.s.l.
Cloudy.

For updated info, please visit yr.no

Observations the last 3 days

Vest-Telemark / D0801(CIA10) Telemark vest 2018-2026

Snow

17.12.2020 kl. 12:39

457 masl

drift@svv (**)

Danger Sign

Recent snowdrift

Large snowfall

Avalanche Danger Assessment

2 Moderate Moderat skredfare (vurdert fra veg). varsom.no. FV806 Byrte kraftverk - Utistog er mest utsatt. Uforandret skredfare neste døgn.

ObsID: 245224

Vest-Telemark / D0801(CIA10) Telemark vest 2018-2026

Snow

17.12.2020 kl. 12:02

456 masl

drift@svv (**)

Danger Sign

No signs observed

ObsID: 245217

Vest-Telemark / Valle

Snow

14.12.2020 kl. 12:31

916 masl

ElisabethS@Obskorps (***)

Image Of Tests
Image 1 of 6 Of:  Tests Copyright:  ElisabethS@Obskorps
Image Of Tests
Image 2 of 6 Of:  Tests Copyright:  ElisabethS@Obskorps
Image Of Tests
Image 3 of 6 Of:  Tests Copyright:  ElisabethS@Obskorps Comment:  Øverste er @9 og det nr2 er @11 på 20cm
Image Of Snow Profile
Image 4 of 6 Of:  Snow Profile Copyright:  ElisabethS@Obskorps
Image Of Weather
Image 5 of 6 Of:  Weather Copyright:  ElisabethS@Obskorps Comment:  Tung snø, hellingen ligger i le for vinden
Image Of Snow Cover
Image 6 of 6 Of:  Snow Cover Copyright:  ElisabethS@Obskorps

Weather

Snow -1.5 °C 8 m/s from E ← 100% clouds

Danger Sign

No signs observed

Tests

ECTP11@20cmQ2 Medium

ECTP9@13cmQ2 Medium Brudde forblanter seg men kun i det øverste laget med nysnø. Det kolapser/synker sammen

LBT@40cmQ2

Avalanche Danger Assessment

3 Considerable Det er svake lag i snøen. Det er vintransport og moderat pålagring av snø. I rette hellinger kan det utløses naturlige skred, kan også løses ut av skiløper. Det snør og blåser godt på 900moh. Snøen som kommer ned var delevis nedbrutt og fuktig. Det er moderat vindtransport i lesider som fører til mye oppsamling av snø. Forecast correct Rett

Avalanche Activity

14. Dec. During the day No avalanche activity

Notes

I bratte heng mer enn 30% så kommer det snøballer ned.

Snow Cover

70 cm in total Some snow drift 20 cm new snow Elevation of new snow 490 masl. Snow line at 480 masl Wet loose snow Moist Våt nysnø

Avalanche Problems

Dry slab avalanche Buried weak layer of new snow Within half a meter The overlying slab is soft. Difficult to trigger 1 - Small N, S, SW, W, NW above 500 masl Snøen som kommer i dag er tung. Det er mye vind og en del vindtransport som fører til moderat pålagring

Snow Profile

16 cm F DF/PP 1 mm M, 5 cm 1F RG 1 mm D, 5 cm F DF 1 mm D, 107 cm P RG 1 mm M -1.7 °C @ 133 cm 2 tests connected to snow profile

ObsID: 244958

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.