Avalanche forecast for Heiane Monday 2019-12-16

2
Moderate
Published:

Be careful in lee areas with wind deposited snow, 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.

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)

12 mm precipitation.
Breeze from east., change to fresh breeze from the west during the afternoon.
-5 °C to -2 °C at 1100 m a.s.l.
Plus degrees up to 400 m a.s.l. during the afternoon.
Cloudy.

For updated info, please visit yr.no
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

Observations the last 3 days

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

Heiane / SIRDAL

Snow

13.12.2019 kl. 12:32

863 masl

Salvesen@obskorps (***)

Image Of Snow Profile
Image 1 of 11 Of:  Snow Profile Copyright:  Salvesen@obskorps Comment:  Kjapp forenklet profil i dag, men essensen er med
Image Of Tests
Image 2 of 11 Of:  Tests Copyright:  Salvesen@obskorps
Image Of Danger Sign
Image 3 of 11 Of:  Danger Sign Copyright:  Salvesen@obskorps
Image Of Danger Sign
Image 4 of 11 Of:  Danger Sign Copyright:  Salvesen@obskorps
Image Of Danger Sign
Image 5 of 11 Of:  Danger Sign Copyright:  Salvesen@obskorps
Image Of Weather
Image 6 of 11 Of:  Weather Copyright:  Salvesen@obskorps
Image Of Weather
Image 7 of 11 Of:  Weather Copyright:  Salvesen@obskorps
Image Of Snow Cover
Image 8 of 11 Of:  Snow Cover Copyright:  Salvesen@obskorps
Image Of Snow Cover
Image 9 of 11 Of:  Snow Cover Copyright:  Salvesen@obskorps Comment:  800moh
Image Of Snow Cover
Image 10 of 11 Of:  Snow Cover Copyright:  Salvesen@obskorps Comment:  550moh Hunnedalen
Image Of Snow Profile
Image 11 of 11 Of:  Snow Profile Copyright: 

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. The overlying slab is soft. Easy to trigger 2 - Medium N, NE, SW, W, NW above 600 masl Fristende å sette vanskelig å løse ut fordi den milde relativt fuktige nysnøen later til å stabilisere seg raskt, men det blåser så friskt at jeg turte ikke.

Avalanche Danger Assessment

2 Moderate Klassisk fokksnøproblematikk, men relativt mildt så stabiliserer seg fortløpende. Vedvarende vind og noe snø vil opprettholde situasjonen gjennom helga. Forecast correct Temmelig spot on. Teksten har høy grad av gjenkjenning på tur i dag.

Avalanche Activity

13. Dec. During the day No avalanche activity

Danger Sign

Recent cracks Område: I denne fjellsiden. Beskrivelse: Myke flak, oppsprekking rundt ski og ferske naturlige sprekker i små leheng

Recent snowdrift Område: Generelt på fjellet. Beskrivelse: Fremtredende helt ned til snøgrensen

Weather

No precipitation -1 °C 16 m/s from SE ↖ 90% clouds Vindfullt.

Snow Cover

40 cm in total Heavy snow drift Snow line at 500 masl Some loose snow (1-10cm) Dry Begynner å minne om vinter her nå. Snødekte veier fra 650moh og tørr(ere) snøoverflate enn før. Skiføre fra 700moh. Overflaten veksler mellom avblåst regnskare og fokksnø med hardhet som øker med høyden. Nordvest til vestvendte heng har samlet mest.

Tests

ECTN13@10cmQ2 Medium Neste kollaps ectn25 @30 Q3

Snow Profile

10 cm 4F/4F-1F DFbk 1 mm, 20 cm 1F DF/RG 1 mm M, 70 cm P/1F MF/MFcl 1 mm/3 mm M -3 °C @ 0 cm, -0.8 °C @ 10 cm, -0.1 °C @ 20 cm, -0.1 °C @ 30 cm, -0.1 °C @ 40 cm, -0.1 °C @ 50 cm, -0.1 °C @ 60 cm, -0.1 °C @ 70 cm, -0.1 °C @ 80 cm, -0.1 °C @ 90 cm, -0.1 °C @ 100 cm 1 test connected to snow profile

ObsID: 201949

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.