Avalanche forecast for Heiane Tuesday 2019-12-17

2
Moderate
Published:

Locally unstable avalanche conditions in the alpine. Be careful of recently loaded storm slabs. A persistent weak layer of facets may be triggered, especially where the snow cover is thin.

Illustrasjon av ferdselsråd Aviod terrain steeper than 30 degrees with new snow during and after the snowfall until the new snow has stabilized.
Illustrasjon av ferdselsråd Avoid terrain traps.

New snow (slab avalanches)

Buried weak layer of new snow

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

What are avalanche problems?

Observations the last 3 days (map placed)

7 mm precipitation, up to 14 mm in the most exposed areas.
Breeze from southwest., change to fresh breeze from the southwest during the afternoon.
-6 °C to -2 °C at 1100 m a.s.l.
Plus degrees up to 600 m a.s.l. during the evening.
Cloudy.

For updated info, please visit yr.no
2 mm precipitation.
Breeze from southeast.
-5 °C to -1 °C at 1100 m a.s.l.
Plus degrees up to 600 m a.s.l.
Cloudy.

For updated info, please visit yr.no

Observations the last 3 days

Heiane / SIRDAL

Snow

17.12.2019 kl. 12:36

1200 masl

Salvesen@obskorps (***)

Image Of Danger Sign
Image 1 of 11 Of:  Danger Sign Copyright:  Salvesen@obskorps
Image Of Weather
Image 2 of 11 Of:  Weather Copyright:  Salvesen@obskorps
Image Of Snow Cover
Image 3 of 11 Of:  Snow Cover Copyright:  Salvesen@obskorps Comment:  800moh
Image Of Snow Cover
Image 4 of 11 Of:  Snow Cover Copyright:  Salvesen@obskorps Comment:  900moh
Image Of Snow Cover
Image 5 of 11 Of:  Snow Cover Copyright:  Salvesen@obskorps Comment:  900moh
Image Of Snow Cover
Image 6 of 11 Of:  Snow Cover Copyright:  Salvesen@obskorps Comment:  550moh
Image Of Snow Cover
Image 7 of 11 Of:  Snow Cover Copyright:  Salvesen@obskorps Comment:  700moh
Image Of Snow Cover
Image 8 of 11 Of:  Snow Cover Copyright:  Salvesen@obskorps Comment:  600moh
Image Of Snow Profile
Image 9 of 11 Of:  Snow Profile Copyright:  Salvesen@obskorps
Image Of Snow Profile
Image 10 of 11 Of:  Snow Profile Copyright:  Salvesen@obskorps Comment:  Litt kantete stemning i det tykke laget sentralt i snøpakken
Image Of Snow Profile
Image 11 of 11 Of:  Snow Profile Copyright: 

Weather

No precipitation -4 °C 3 m/s from SE ↖ 80% clouds Rolige forhold, overskyet med gløtt av blå himmel.

Danger Sign

Recent snowdrift Område: I denne fjellsiden. Beskrivelse: Merkbart fra 900m

Recent cracks Snø sprekker opp rundt ski.

Snow Cover

40 cm in total No snowdrift 4 cm new snow Elevation of new snow 300 masl. Snow line at 300 masl. Layered snow begins at 600 masl Much loose snow (10-30cm) Dry Nysnø på rolige vindforhold den siste tiden har etterlatt et harmonisk vinterlandskap med mye (20cm) fin ubundnen snø i overflaten. Fra ca 850 meter har snøen flyttet litt mer på seg og gir myke flak i nord til nordvestlige himmelretninger.

Tests

LBT@10cmQ2 Nedføyket løs.

ECTN18@12cmQ3 Good

Avalanche Danger Assessment

2 Moderate I høyden finnes myke flak av fokksnø. Gir inntrykk av å ha stabilisert seg godt på tur i dag, men i brattheng kan det som vanlig heller ikke utelukkes. Mer nysnø og etter hvert vindøkning onsdag vil forverre situasjonen. Forecast correct

Avalanche Problems

Dry slab avalanche Buried weak layer of new snow Within half a meter The collapsing weak layer is thin < 3 cm. The overlying slab is soft. Easy to trigger 2 - Medium N, NE, W, NW above 800 masl

Avalanche Activity

17. Dec. During the day Loose dry avalanche Few (2-5). 1 - Small. Spontaneous release Isolated steep slopes. N, NE, E, SE, S, SW, W, NW Bare i svært bratt lende

Notes

Snøprofil ble gravd med tanke på jakt etter kantkorn ved bakken og representerer ikke mest utsatte lokalitet for på fokksnøproblematikk.

Snow Profile

10 cm 1F RG 1 mm D, 2 cm K MFcr D, 7 cm 1F-P RG 1 mm D-M, 1 cm K MFcr D, 17 cm 4F/1F RG/RGxf 1 mm D, 20 cm K/P MFcr/MFcl M, 3 cm 1F MF W -4.3 °C @ 0 cm, -3.2 °C @ 10 cm, -2.1 °C @ 20 cm, -1.5 °C @ 30 cm, -1.1 °C @ 40 cm, -1 °C @ 50 cm, -0.5 °C @ 60 cm

ObsID: 203408

Heiane / SULDAL

Snow

15.12.2019 kl. 12:46

564 masl

Salvesen@obskorps (***)

Image Of Snow Cover
Image 1 of 1 Of:  Snow Cover Copyright:  Salvesen@obskorps

Snow Cover

Nysnø siste 24

ObsID: 202156

Heiane / SIRDAL

Snow

15.12.2019 kl. 12:28

657 masl

Salvesen@obskorps (***)

Image Of Snow Cover
Image 1 of 1 Of:  Snow Cover Copyright:  Salvesen@obskorps

Snow Cover

10 cm new snow

ObsID: 202153

Heiane / GJESDAL

Snow

15.12.2019 kl. 12:22

566 masl

Salvesen@obskorps (***)

Image Of Snow Cover
Image 1 of 1 Of:  Snow Cover Copyright:  Salvesen@obskorps

Snow Cover

Det meldes om nysnø i Hunnedalen

ObsID: 202152

Heiane / BJERKREIM

Snow

15.12.2019 kl. 10:39

808 masl

Thomas Hetland (Unknown)

Image Of Notes
Image 1 of 1 Of:  Notes Copyright:  Thomas Hetland

Notes

ObsID: 202120

Heiane / SIRDAL

Snow

15.12.2019 kl. 09:40

526 masl

Gjesdalbu (Unknown)

Image Of Weather
Image 1 of 1 Of:  Weather Copyright:  Gjesdalbu

Weather

ObsID: 202104

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.