Avalanche forecast for Indre Sogn 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
Many 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
Low additional load
Some steep slopes
Possible

What are avalanche problems?

5 mm precipitation, up to 15 mm in the most exposed areas.
Moderate gale from west., change to strong breeze from the southwest.
-7 °C to -2 °C at 1400 m a.s.l.
Plus degrees up to 1000 m a.s.l. during the evening.
Cloudy.

For updated info, please visit yr.no
8 mm precipitation, up to 16 mm in the most exposed areas.
Fresh breeze from northwest., change to moderate gale from the southwest during the afternoon.
-10 °C to -4 °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: vegard@nrh (Unknown)

i kommune: SOGNDAL

Avalanche evaluation

0 Not given

Incident

Not specified

Single avalanche

2 - Medium

Not given

Click here for pictures and the full observation

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

i kommune: SOGNDAL

Notes

Video av snøoverflaten og kommentarer før man begynner å sjekke hva flaket evt ligger på. Så gode bindinger i flaket over, ikke nødvendigvis til det svake lag.

Avalanche evaluation

2 Moderate

Avalanche problems

Buried weak layer of surface hoar

Snow cover

248 cm snødybde

15 cm nysnø siste døgn

Weather

No precipitation

0.0 grader

Coloumn test

Poor

ECTPV@78cmQ1

Snow profile

Antall Lag: 12

Total dybde: 158,00 cm

Dangersign

Whumpf sound

Område: På dette stedet. Beskrivelse: Drønn i rim/kantkorn. Ligger på 40cm her under 1f+ snø gradvis til 1f- snø. Fikk et drønn til da sprakk snøen også opp, ca 10-15meter sprekk. Hadde nok løsna hadde det var bratt nok. Flake som sprakk var super lite. Sprekken var vel så stor den kunne ha blitt.

Dangersign

Recently made avalanches

Gått en rekke skred, pga pålagring av snø i kombinasjon med temp økning. Trolig sist døgn. Ved Kamba , Reppanippa, Myllobotn ( Torstadnakken). Og helt sikkert andre steder også. Ø til S sektor. Str 1-2.5. Flak. Flere snøballer / løsnøskred også.

Click here for pictures and the full observation

Rapportert av: Henning (Unknown)

i kommune: LUSTER

Notes

Flere ferske skred observert fra helikopter etter mye nedbør og mildvær.

Weather

No precipitation

0.0 grader

Avalanche activity

Few (2-5) 2 - Medium

Dry slab avalanche

Dangersign

Recently made avalanches

Område: I denne fjellsiden. Beskrivelse: Ferske skred observert på flere fjell

Rapportert av: Linda (Unknown)

i kommune: SOGNDAL

Snow cover

Rapportert av: Tomf (Unknown)

i kommune: SOGNDAL

Snow profile

Antall Lag: 3

Total dybde: 107,00 cm

Click here for pictures and the full observation

Rapportert av: Andreas@nve (*****)

i kommune: SOGNDAL

Avalanche evaluation

3 Considerable

Coloumn test

Medium

ECTP21@60cmQ1

Dangersign

Recently made avalanches

Område: På dette stedet. Beskrivelse: Fjernutløst str 2 skred. Bruddet går i rimlaget.

Click here for pictures and the full observation

Rapportert av: drift@svv (**)

i kommune: SOGNDAL

Incident

Traffic stopped

Single avalanche

Not given

Not given

Click here for pictures and the full observation

Rapportert av: Daniel (Unknown)

i kommune: SOGNDAL

Avalanche activity

One (1) Not given

Dry slab avalanche

Dangersign

Recent snowdrift

Click here for pictures and the full observation

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

i kommune: SOGNDAL

Avalanche activity

Few (2-5) 2 - Medium

Wet slab avalanche

Click here for pictures and the full observation

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

i kommune: SOGNDAL

Snow cover

15 cm nysnø siste døgn

Weather

No precipitation

4.0 grader

Avalanche activity

Numerous (10 or more) 1 - Small

Loose wet avalanche

Dangersign

Quick temperature change

Temp steg i løpet av går kveld / natt fra minus til godt over på pluss siden nå i lavlandet. På 600moh er det nå pluss 4. På 1585moh er det -5 nå.

Dangersign

Recently made avalanches

Har gått skred pga temp økning foreløpig kun små - middels. Både flak og løssnø.

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.