Avalanche forecast for Jotunheimen Friday 2019-01-18

3
Considerable
Published:

Conditions are dangerous. Be careful in lee areas with wind deposited snow, typically behind ridges, ribs and in gullies. Be aware of a persistant weak layer buried by windslabs.

Wind drifted snow (slab avalanches)

Buried weak layer of new snow

Avoid steep (more than 30 degrees) areas with fresh wind deposited snow, especially convex terrain. An avalanche is easier to trigger where wind slabs are thin or soft. Look for areas where the wind recently has deposited snow, typically behind ridges, ribs and in gullies. Remember that local wind effects will cause variation in where the wind slabs occur.
2 - Medium
Low additional load
Many steep slopes
Possible

Persistent weak layer (slab avalanches)

Buried weak layer of faceted snow above a crust

Avoid skiing in avalanche terrain (steep terrain more than 30 degrees and in runout zones). NB, remote triggering is likely. Make very conservative route choices, especially in unknown terrain, after snowfall and if temperatures rise. Identifying areas where the weak layer is present might be difficult and requires experience. Danger signs are whoumpf-sounds, cracking and recent avalanches. However, absence of signs does not mean it is safe.
3 - Large
Low additional load
Some steep slopes
Possible

What are avalanche problems?

3 mm precipitation.
Strong breeze from northwest.
-17 °C to -11 °C at 1800 m a.s.l.
Partly cloudy.

For updated info, please visit yr.no
3 mm precipitation.
Strong breeze from northwest.
-18 °C to -12 °C at 1800 m a.s.l.
Partly cloudy.

For updated info, please visit yr.no

Observations the last 3 days

Rapportert av: Even@BerntsenFjell (***)

i kommune: VANG

Coloumn test

Poor

ECTP1@10cmQ2

Rapportert av: Leif@ObsKorps (*****)

i kommune: VANG

Snow profile (2012)

Lbt. Flak av 1F fokksnø over F tykt løssnølag kollapset ved frigjøring av søyla. Q3

100615

Snow profile (2012)

Q1 brudd nederst i fokksnølaget 85 cm ned ved moderat belastning på samme søyle. Brudd på P hard omdannet snø, mulig fra mildvær 10.01. Tegn til begynnende kantdannelse men små krystaller 1 mm. Enkelte 1,5.

100616

Click here for pictures and the full observation

Rapportert av: Leif@ObsKorps (*****)

i kommune: VANG

Dangersign

Other dangersign (specify)

Område: På dette stedet. Beskrivelse: Kant over 10.01 skarelaget. 1,5-2mm relativt godt utviklet her.

Snow profile (2012)

Ved lbt bryter nysnøen oppå kantkorn over 10.01 skarelaget. 4f myk fokksnø øverst F nedover mot 4f ned mot skaren.

100609

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Rapportert av: Leif@ObsKorps (*****)

i kommune: VANG

Snow cover

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Rapportert av: Even@BerntsenFjell (***)

i kommune: VANG

Weather

Not observed

Dangersign

Recent snowdrift

Område: I denne fjellsiden. Beskrivelse: Godt med vind fra V-NV

Rapportert av: Leif@ObsKorps (*****)

i kommune: VANG

Snow cover

58 cm snødybde

1 cm nysnø siste døgn

Rapportert av: Even@BerntsenFjell (***)

i kommune: VANG

Dangersign

Recently made cracks

Click here for pictures and the full observation

Rapportert av: Albert (*****)

i kommune: SKJÅK

Avalanche evaluation

3 Considerable

Coloumn test

Poor

CTV@0cmQ1

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Rapportert av: Leif@ObsKorps (*****)

i kommune: VANG

Avalanche activity

One (1) 1 - Small

Cornice

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Rapportert av: Even@BerntsenFjell (***)

i kommune: VANG

Dangersign

Recently made avalanches

Område: På dette stedet. Beskrivelse:

Dangersign

Recently made cracks

Område: På dette stedet. Beskrivelse:

Click here for pictures and the full observation

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.

Visit www.ut.no for topographic maps online. For slope angle maps, see NGI slope angel maps ("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.