Avalanche forecast for Voss Wednesday 2019-02-13

3
Considerable
Published:

Temperature rise may give some wet sluffs below approx. 1100 m a.s.l. Moderate gale from SW, and some snow, will form storm slabs at higher altitudes. Persistent week layers in the snow pack may in some cases lead to slab avalanches, caused by snow melt at low altitudes or loading at higher altitudes.

New snow (slab avalanches)

Buried weak layer of new snow

Avoid terrain traps and steep slopes until the new snow has stabilized. The avalanche problem is generally widely distributed on any steep slope with deep new snow. Look for cohesive new snow that breaks apart or is poorly bonded to the old snow. Cracks around your skis are a typical dangersign.
3 - Large
Spontaneous release
Some steep slopes
Possible

Wet snow (loose snow avalanches)

Loose snow

Avoid avalanche release and run out areas. Wet snow avalanches tend to release spontaneously. Timing is important. Stability decreases when the snow surface gets wet and soft.
2 - Medium
Spontaneous release
Some steep slopes
Possible

Persistent weak layer (slab avalanches)

Buried weak layer of faceted snow near surface

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
High additional load
Some steep slopes
Possible

What are avalanche problems?

5 mm precipitation.
Moderate gale from west., change to strong breeze from the southwest.
-6 °C to -1 °C at 1400 m a.s.l.
Plus degrees up to 1100 m a.s.l. during the evening.
Cloudy.

For updated info, please visit yr.no
12 mm precipitation, up to 20 mm in the most exposed areas.
Strong breeze from northwest., change to moderate gale from the southwest during the afternoon.
-8 °C to -3 °C at 1400 m a.s.l.
Plus degrees up to 800 m a.s.l. during the evening.
Cloudy.

For updated info, please visit yr.no

Observations the last 3 days

Rapportert av: Njål@SVV (*****)

i kommune: VOSS

Avalanche activity

One (1) 1 - Small

Cornice

Click here for pictures and the full observation

Rapportert av: steinar@tindeguide.no (*****)

i kommune: VOSS

Avalanche activity

Numerous (10 or more) 2 - Medium

Loose wet avalanche

Avalanche activity

Numerous (10 or more) 3 - Large

Dry slab avalanche

Weather

No precipitation

-2.0 grader

Dangersign

Recently made avalanches

Click here for pictures and the full observation

Rapportert av: Njål@SVV (*****)

i kommune: VOSS

Avalanche evaluation

2 Moderate

Avalanche problems

Buried weak layer of surface hoar

Avalanche problems

Loose snow

Snow profile (2012)

104476

Snow profile (2012)

Mildværet har trengt ca 16 cm ned i snødekket så langt. Det er et rimlag som gir ECTP20@35,5down,Q1 - repetert test. Videre er det et kantlag som gir ECTX 58down, tilnærmet Q1 brudd dersom det går. Ser tydelig at det kjapt samler seg vann i disse lagene i profilveggen som er eksponert. Med t-skje. Det er fortsatt 20 cm igjen før fuktighet når ned til det øverste svake laget.

104493

Snow profile (2012)

104518

Coloumn test

Medium

ECTP20@35cmQ1

Coloumn test

Good

ECTX@0cmNot specified

Avalanche activity

Few (2-5) 1 - Small

Loose wet avalanche

Dangersign

Other dangersign (specify)

Våte løssnøskred og isnedfall under ca 500 m o.h. på morningen i dag.

Click here for pictures and the full observation

Rapportert av: oormasen (*)

i kommune: VOSS

Avalanche activity

Few (2-5) 1 - Small

Loose wet avalanche

Avalanche activity

Few (2-5) 2 - Medium

Dry slab avalanche

Snow cover

80 cm snødybde

10 cm nysnø siste døgn

Snow profile

Antall Lag: 5

Total dybde: 47,00 cm

Weather

No precipitation

2.0 grader

Dangersign

No signs observed

Med unntak av noen få små løssnøskred på motsatt side av dalen observerte vi ingen tydelige faretegn på vår tur mot Øyastølsfjellet.

Click here for pictures and the full observation

Rapportert av: Njål@SVV (*****)

i kommune: VOSS

Weather

No precipitation

3.0 grader

Click here for pictures and the full observation

Rapportert av: drift@svv (**)

i kommune: VOSS

Avalanche evaluation

3 Considerable

Dangersign

Recently made avalanches

Dangersign

Quick temperature change

Dangersign

Much water in the snow

regn på snø

Dangersign

Recent snowdrift

Rapportert av: drift@svv (**)

i kommune: HØYANGER

Dangersign

Quick temperature change

Dangersign

Much water in the snow

regn på snø

Rapportert av: jkvn@alf (**)

i kommune: SAMNANGER

Snow cover

90 cm snødybde

15 cm nysnø siste døgn

Weather

Rain

2.0 grader

Dangersign

Quick temperature change

Område: I denne fjellsiden. Beskrivelse: Temperaturen steg fra minus 2 til pluss to grader i ettermiddag og kveld.

Rapportert av: Siggen@obskorps (****)

i kommune: VOSS

Snow cover

13 cm nysnø siste døgn

Weather

Snow

-0.5 grader

Rapportert av: Siggen@obskorps (****)

i kommune: VOSS

Snow cover

4 cm nysnø siste døgn

Weather

Snow

-2.2 grader

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.