Avalanche forecast for Heiane Monday 2021-01-04

Highest danger level per day:
2
Moderate
Published:

Be aware of isolated wind slabs, otherwise stable conditions.

Illustrasjon av ferdselsråd Aviod terrain steeper than 30 degrees with fresh wind slabs.
Illustrasjon av ferdselsråd Avoid terrain traps.

Wind drifted snow (slab avalanches)

Poor bonding between layers in wind deposited snow

Read more about the avalanche problem
2 - Medium
High additional load
Specific steep slopes
Possible

What are avalanche problems?

Observations the last 3 days (map placed)

0 mm precipitation.
Breeze from east.
-12 °C to -6 °C at 1100 m a.s.l.
Partly cloudy.

For updated info, please visit yr.no
0 mm precipitation.
Fresh breeze from northeast.
-11 °C to -6 °C at 1100 m a.s.l.
Plus degrees up to 100 m a.s.l. during the afternoon.
Clear skies.

For updated info, please visit yr.no

Observations the last 3 days

Heiane / BJERKREIM

Snow

03.01.2021 kl. 17:05

709 masl

Thomas Hetland (Unknown)

Image Of Snow Cover
Image 1 of 1 Of:  Snow Cover Copyright:  Thomas Hetland

Danger Sign

Recent snowdrift Område: Generelt på fjellet

Weather

No precipitation -6 °C 5 m/s from E ← Strålende vær

Snow Cover

40 cm in total Elevation of new snow 400 masl. Snow line at 400 masl Wind slab (hard slab) Mye løssnø men også overaskene mye har vindpåvirket snø i utsatte områder. Hard snø bar til tider meg med sekk.

ObsID: 247223

Heiane / BJERKREIM

Snow

03.01.2021 kl. 14:46

646 masl

Thomas Hetland (Unknown)

Image Of Avalanche Observation
Image 1 of 4 Of:  Avalanche Observation Copyright:  Thomas Hetland
Image Of Avalanche Observation
Image 2 of 4 Of:  Avalanche Observation Copyright:  Thomas Hetland
Image Of Avalanche Observation
Image 3 of 4 Of:  Avalanche Observation Copyright:  Thomas Hetland
Image Of Avalanche Observation
Image 4 of 4 Of:  Avalanche Observation Copyright:  Thomas Hetland

Weather

No precipitation -6 °C 5 m/s from E ← Strålende vær

Incident

Snow Did not affect anything

Avalanche Observation

3. Jan 14:20 (+01:00) Dry slab avalanche 1 - Small Human triggered Buried weak layer of new snow 10 cm high and 3 m wide fracture Steep slope Naturlig utløst på retur fra klatretur. Hensikten var å prøve å utløse dette. I brattheng i område med fokksnø mot vest. Lett og løse ut med fot/stegjern.

ObsID: 247221

Heiane / Hundetodalen

Snow

03.01.2021 kl. 14:05

862 masl

Nurhan (Unknown)

Image Of Notes
Image 1 of 3 Of:  Notes Copyright:  Nurhan Comment:  Pic shows snow transport. Altitude ~860m
Image Of Notes
Image 2 of 3 Of:  Notes Copyright:  Nurhan Comment:  Pic shows snow transport. Altitude ~860m
Image Of Notes
Image 3 of 3 Of:  Notes Copyright:  Nurhan Comment:  Pic shows snow transport. Altitude ~860m

Danger Sign

Recent cracks Windblown snow >750 m, experienced slabs breaking off on SW slope. Slabs ~4cms thick, 50 x 50 cms long, wide. Slope angle ~16 degrees, so slabs broke and stopped, but would check SW facing slopes >30 degrees.

Notes

Snø red Cross ~20 cm (565 m) Hunnevatn (vegvesen webkamera 660m) ~ 30 cms +100m (760m) snø ~45 cms Snow in valley is continuous, no drifting, windblown, or ice from thawing/ freezing. Lovely snow, top 10 cms Vestlandet's powder, compacted lower section. Above 750 m wind blown snow. Wind has followed terrain, and appears to have blown from N round to NE (Cornices on S, SW facing slopes, and wind waves/scouring evidence in same areas). Some windblown icy patches higher, but good grip with metal edges. A little light on snow cover, some rocks/tree routes just below surface and easy to hit.

Weather

No precipitation -5 °C 4 m/s from NE ↙ 10% clouds

ObsID: 247239

Heiane / Sirdal

Snow

03.01.2021 kl. 13:00

930 masl

Martine-Sirdalskipatrol (Unknown)

Image Of Snow Cover
Image 1 of 5 Of:  Snow Cover Copyright:  Martine-Sirdalskipatrol
Image Of Tests
Image 2 of 5 Of:  Tests Copyright:  Martine-Sirdalskipatrol
Image Of Snow Profile
Image 3 of 5 Of:  Snow Profile Copyright:  Martine-Sirdalskipatrol
Image Of Snow Cover
Image 4 of 5 Of:  Snow Cover Copyright:  Martine-Sirdalskipatrol
Image Of Snow Cover
Image 5 of 5 Of:  Snow Cover Copyright:  Martine-Sirdalskipatrol

Weather

No precipitation -5 °C

Tests

CTV@15cmQ1 Good CT15

Snow Cover

No snowdrift Surface hoar on a hard surface Dry Penfoot: 14cm

Snow Profile

1 tests connected to snow profile

ObsID: 247227

Heiane / Sirdal / Vest-Agder

Snow

03.01.2021 kl. 12:55

924 masl

Rachael-sirdalskipatrol (Unknown)

Image Of Tests
Image 1 of 4 Of:  Tests Copyright:  Rachael-sirdalskipatrol
Image Of Tests
Image 2 of 4 Of:  Tests Copyright:  Rachael-sirdalskipatrol
Image Of Snow Profile
Image 3 of 4 Of:  Snow Profile Copyright:  Rachael-sirdalskipatrol
Image Of Notes
Image 4 of 4 Of:  Notes Copyright:  Rachael-sirdalskipatrol

Notes

1st pit Sirdal Ski Patrol 2021 by RB + MH. Dug to ground 165cm at 940m SW aspect 17 degrees. Profile shows a ‘right side up’ snow pack with temperature increase as we move down the layers. CT dug down to 100cm with failure on CT15. Below failure pack was solid and no sign of failure after continuing test . Surface melt forms gave us a 2cm top layer with cracking when walk/skied on, no propagation.

Weather

No precipitation -5 °C 4 m/s from S ↑

Tests

CTM15@15cmQ2 Medium

Snow Cover

165 cm in total No snowdrift 0 cm new snow Surface hoar on a hard surface Dry Footpen. 14cm

Snow Profile

1 tests connected to snow profile

ObsID: 247242

Heiane / Sirdal

Snow

02.01.2021 kl. 14:23

844 masl

Ajorg@rkh-skredgruppe (***)

Image Of Snow Cover
Image 1 of 3 Of:  Snow Cover Copyright:  Ajorg@rkh-skredgruppe Comment:  Overflaterim på ubunden snø
Image Of Snow Cover
Image 2 of 3 Of:  Snow Cover Copyright:  Ajorg@rkh-skredgruppe
Image Of Snow Cover
Image 3 of 3 Of:  Snow Cover Copyright:  Ajorg@rkh-skredgruppe

Weather

No precipitation -3 °C 1 m/s 40% clouds -8 på 680moh og stjerneklart natt til lørdag

Snow Cover

No snowdrift Surface hoar on a soft surface Dry

ObsID: 247083

Heiane / Sandnes

Snow

02.01.2021 kl. 13:30

808 masl

Erik Macdonald Karlsen (Unknown)

Image Of Danger Sign
Image 1 of 1 Of:  Danger Sign Copyright:  Erik

Snow Cover

50 cm in total Elevation of new snow 400 masl. Snow line at 400 masl Surface hoar on a soft surface Tilsynelatende lite lagdeling over700moh ikke nevneverdig snøfokk

ObsID: 247195

Heiane / Åseral

Snow

02.01.2021 kl. 11:32

796 masl

Nina@Obskorps (***)

Image Of Weather
Image 1 of 6 Of:  Weather Copyright:  Nina@Obskorps Comment:  Vardehei ca 800 moh sett fra øst
Image Of Weather
Image 2 of 6 Of:  Weather Copyright:  Nina@Obskorps Comment:  Snøgrensa lite vindpåvirket trær. Sett fra vest.
Image Of Weather
Image 3 of 6 Of:  Weather Copyright:  Nina@Obskorps Comment:  Skavldanning NV side
Image Of Snow Profile
Image 4 of 6 Of:  Snow Profile Copyright: 
Image Of Snow Profile
Image 5 of 6 Of:  Snow Profile Copyright: 
Image Of Snow Profile
Image 6 of 6 Of:  Snow Profile Copyright: 

Avalanche Activity

2. Jan. During the day (+01:00) No avalanche activity

Danger Sign

Recent snowdrift Område: Generelt på fjellet. Beskrivelse: Ikke noe stort snøfall de siste dagene, men litt hver natt og det ligger fortsatt en del løs snø som er tilgjengelig for transport.

Weather

No precipitation -3.9 °C 2 m/s from E ← 90% clouds Veldig stabil kaldt og lite vind siste døgnet.

Tests

LBT@75cmQ2

ECTN7@10cmQ2

Snow Cover

90 cm in total No snowdrift 2 cm new snow Elevation of new snow 300 masl. Snow line at 250 masl Some loose snow (1-10cm) Dry Siden det har vært lite vind, ligger det fortsatt en del løs snø overalt i terrenget. Etter stort snøfall og vind i begynnelsen av uka, fortsatt ulik fordeling av snøen, mest i NV vendt terreng. Fra 600 moh bra skiføre.

Avalanche Problems

Dry slab avalanche Poor bonding between layers in wind deposited snow Within half a meter The overlying slab is soft. Difficult to trigger 2 - Medium N, NE, SW, W, NW above 700 masl

Avalanche Danger Assessment

2 Moderate Generelt stabile forhold etter flere dager med kaldt vær og lite nedbør/vind. Men fortsatt ujevn fordeling av snø i terrenget med opphpning i nordvestlig sektor. I tilfelle det utløses skred, kan de bli middels til store i dette området. Fant dessuten facetterte partikler øverst på den gamle smelteomvandlet snøen. Her fikk jeg også brudd i LBT. Dette lage ligger nokså dypt nå der det ligger mye fokksnø (75 cm der jeg gravde). Men hvor dypt det laget ligger varierer selvølgelig og kan dermed også ligge nærmere overflaten, så at det er lettere å påvirke. Værest ser stabilt ut fremover, ikke noe særlig nedbør eller temperaturendring de neste dagene. Går ut ifra at det blir lite forandring de nærmeste dagene. Forecast correct

Snow Profile

10 cm 4F DF 1 mm/2 mm D, 20 cm 4F DF/RG 0 mm/1 mm D, 35 cm 1F RG 0 mm/1 mm D, 1 cm K FC/FCxr 1 mm/2 mm tynt lag med blanding av RGxf og FCxr. Ikke så veldig store facetterte partikler, men tydelige kanter og det er laget der jeg fikk brudd i LBT, 40 cm P MF/MFcl 1 mm/3 mm M -4.6 °C @ 0 cm, -4.6 °C @ 10 cm, -4.4 °C @ 20 cm, -3.3 °C @ 30 cm, -2.3 °C @ 40 cm, -1.6 °C @ 50 cm, -1.1 °C @ 60 cm, -0.7 °C @ 70 cm, -0.4 °C @ 80 cm, -0.2 °C @ 100 cm 1 tests connected to snow profile

ObsID: 247044

Heiane / BJERKREIM

Snow

01.01.2021 kl. 15:00

611 masl

SimonL@svv (***)

Image Of Snow Cover
Image 1 of 5 Of:  Snow Cover Copyright:  SimonL@svv Comment:  Mot NØ og Stavtjørna. Bilde tatt fra skibakken. Obs. her er det noe kunstsnø i forgrunnen.
Image Of Snow Cover
Image 2 of 5 Of:  Snow Cover Copyright:  SimonL@svv Comment:  Mot Ø og Skibufjellet (toppen 843 moh).
Image Of Snow Cover
Image 3 of 5 Of:  Snow Cover Copyright:  SimonL@svv Comment:  Mot Ø.
Image Of Snow Cover
Image 4 of 5 Of:  Snow Cover Copyright:  SimonL@svv Comment:  Mot S.
Image Of Snow Cover
Image 5 of 5 Of:  Snow Cover Copyright:  SimonL@svv Comment:  Mot V.

Notes

Med klar nattehimmel, relativt lav temperaturer (under 5C) og tynt snødekket vil det være høy temperaturgradient og fare for oppbyggende omvandling.

Weather

No precipitation -4 °C Var overskyet på morgenen og formiddagen (rundt 0C), klarnet opp på ettermiddagen og da sank temperaturen. Var også klart natt til 2. januar (-6C på 500moh).

Snow Cover

15 cm in total No snowdrift Some loose snow (1-10cm) Moist Totalt 10-20 cm snødybde i terrenget. Smelteomvandla snøover under et lag med nysnø.

ObsID: 247012

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.