Avalanche forecast for Vest-Telemark Sunday 2021-05-09

Highest danger level per day:
3
Considerable
Published:

Higher temperatures, rain in lower elevations and snow in higher elevations increases the risk of wet loose-snow and slab avalanches in steep terrain. Some avalanches may release naturally. Keep distance to avalanche terrain.

Illustrasjon av ferdselsråd Wet surface: Avoid slopes steeper than 35 degrees with wet loose snow and runout zones.
Illustrasjon av ferdselsråd Dry surface: Aviod terrain steeper than 30 degrees with fresh wind slabs and runout zones.
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
Likely

Wet snow (loose snow avalanches)

Loose snow

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

What are avalanche problems?

Observations the last 3 days (map placed)

0 mm precipitation.
Calm/light breeze from northwest., change to breeze from the west during the afternoon.
-7 °C to 4 °C at 1100 m a.s.l.
Plus degrees up to 1200 m a.s.l. during the afternoon.
Partly cloudy.

For updated info, please visit yr.no
10 mm precipitation, up to 20 mm in the most exposed areas.
Strong breeze from southeast., change to breeze from the southeast during the afternoon.
-2 °C to 2 °C at 1100 m a.s.l.
Plus degrees up to 1600 m a.s.l. during the evening.
Cloudy.

For updated info, please visit yr.no

Observations the last 3 days

Vest-Telemark / Tinn

Snow

08.05.2021 kl. 15:10

1807 masl

Valsø@forsvaret (***)

Image Of Danger Sign
Image 1 of 2 Of:  Danger Sign Copyright:  Valsø@forsvaret
Image Of Danger Sign
Image 2 of 2 Of:  Danger Sign Copyright:  Valsø@forsvaret

Danger Sign

Recent avalanches Område: I denne fjellsiden

ObsID: 271702

Vest-Telemark / Gaustatoppen, Renne 5

Snow

08.05.2021 kl. 12:10

1781 masl

Politiet i Sør-Øst (Unknown)

Avalanche Observation

8. May 12:10

ObsID: 271664

Vest-Telemark / Vinje

Snow

07.05.2021 kl. 12:19

1114 masl

Bård Henning@obskorps (****)

Image Of Danger Sign
Image 1 of 3 Of:  Danger Sign Copyright:  Bård Henning@obskorps
Image Of Snow Cover
Image 2 of 3 Of:  Snow Cover Copyright:  Bård Henning@obskorps
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Image 3 of 3 Of:  Snow Profile Copyright: 

Weather

No precipitation 2 °C 3 m/s from N ↓ 50% clouds Skiftende skydekke. Stor temperatur forskjell på skygge og sol

Notes

Det har forekommet tørre flaksred i regionen. Det er der fokksnøen har lagt seg.

Snow Cover

No snowdrift Crust Moist Skiftende mellom skare og enkelte lommer med fuktig fokksnø

Avalanche Danger Assessment

2 Moderate Økende skredfare med mildere vær og nedbør Kulden som har vært på nettene vil avta mot uka, og snøen vil bli mer ustabil og overflaten blir mykere Forecast too low Det finnes enkelte leheng og renner med ustabil fokksnø i høyden. Skiløpere må ta høyde for varierende forhold

Tests

ECTP20@22cmQ2 Good Må bruke 20 slag, men skarelag nede i dekket kan svekkes når det blir varmere

Danger Sign

Quick temperature change Område: Generelt på fjellet. Beskrivelse: Stor temperatur forskjell fra nattefrost til solstråling på dag

Avalanche Activity

7. May. During the day No avalanche activity Ingen skred observert i denne Dalen. God sikt

Avalanche Problems

Wet slab avalanche Poor bonding between crust and overlying snow Within half a meter Difficult to trigger 2 - Medium N, NE, E, SE, S, SW, W, NW between 1300 masl and 900 masl

Snow Profile

1 cm F DF 1 mm M, 15 cm P MFcr 3 mm M, 5 cm K MFcr 2 mm M, 57 cm 4F MF 2 mm M, 6 cm P MFcr 2 mm M-W, 20 cm 4F MF 2 mm W 0 °C @ 0 cm, -0.1 °C @ 10 cm, -0.1 °C @ 30 cm, -0.1 °C @ 60 cm, -0.1 °C @ 90 cm

ObsID: 271572

Vest-Telemark / Valle

Snow

07.05.2021 kl. 08:17

875 masl

ElisabethS@Obskorps (***)

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

Weather

No precipitation -3.6 °C 2 m/s from N ↓ 15% clouds

Snow Cover

120 cm in total No snowdrift 2 cm new snow Some loose snow (1-10cm) Dry

Avalanche Danger Assessment

1 Low Stabile forhold, men det har vært -4 i natt og det kom ikke mer enn 2-5cm snø. Skal være obs i lesider det det ligger mer enn 2-5 cm nøsnø. Det underliggende laget er hardt! Det er meldt varmere vær og ikke nattefrost. Det er nok faregrad 1 som er rett fra i morgen av. Forecast correct

Tests

ECTN18@15cmQ3 Good Det gir ikke veldig etter, det bare deler seg op

Danger Sign

No signs observed

Avalanche Activity

7. May. 18-24 Loose dry avalanche Few (2-5). 1 - Small. Spontaneous release Isolated steep slopes Nysnøen som kom(2-5cm) de siste to dagene slipper i brattheng. Bare små små skred.

Avalanche Problems

Loose snow

Snow Profile

3 cm F DF 1 mm, 1 cm P MFcr 1 mm D, 2 cm 4F DF 1 mm D, 6 cm K MFcr 2 mm D, 7 cm F RG/RGxf 2 mm D, 10 cm P RG 1 mm D, 10 cm K MF 2 mm D, 20 cm 4F MF 2 mm D, 60 cm K MF 1 mm/2 mm D -2.8 °C @ 20 cm, -1.2 °C @ 40 cm, -0.8 °C @ 60 cm, -0.7 °C @ 80 cm, -0.6 °C @ 100 cm, -0.6 °C @ 120 cm 1 tests connected to snow profile

ObsID: 271871

Vest-Telemark / Tinn

Snow

06.05.2021 kl. 15:05

1138 masl

wa@grenland-havn.no (Unknown)

Incident

Skred utløst i renne 6 Snow Did not affect anything Skiresort, off-piste

Avalanche Observation

6. May 12:08 Glide avalanche 2 - Medium Human triggered Avalanche release at 1652 masl and ended at 1652 masl Steep slope

ObsID: 271458

Vest-Telemark / Gaustatoppen

Snow

06.05.2021 kl. 13:01

1795 masl

Politiet i Sør-Øst (Unknown)

Avalanche Observation

6. May 12:29 Dry loose-snow avalanche Naturaly released N-facing 50 m wide fracture In gully or concave form

ObsID: 271429

Vest-Telemark / Tinn

Snow

06.05.2021 kl. 12:30

1842 masl

497101 (Unknown)

Image Of Avalanche Observation
Image 1 of 1 Of:  Avalanche Observation Copyright:  497101

Weather

No precipitation

Avalanche Observation

6. May 12:30 Dry slab avalanche 4 - Very large Human triggered NE-facing Avalanche release at 1848 masl and ended at 1491 masl 15 cm high and 15 m wide fracture In gully or concave form Renne 6 Stort skred i renne 6 hele veien ned til det flater ut

Avalanche Danger Assessment

3 Considerable Ikke riktig med 1 i skredfare, i vindutsatte bratte områder er det 3 eller 4 Forecast too low

ObsID: 271477

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.