Avalanche forecast for Indre Troms Wednesday 2019-02-20

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  3. Avalanche forecast for Indre Troms Wednesday 2019-02-20

2
Moderate
Published:

Be careful in areas with windslabs. A persistent weak layer of facets may be triggered, especially where the snow cover is thin.

Avalanche problems and travel advice

Wind drifted snow (slab avalanches)

Buried weak layer of new snow

Be careful and keep distance to each other in steep (above 30 degrees) terrain 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.
Avalanche size:
2 - Medium
Trigger/release:
Low additional load
Distribution:
Some steep slopes
Probability:
Possible

Persistent weak layer (slab avalanches)

Buried weak layer of faceted snow beneath a crust

Keep distance to each other when traveling in avelanche terrain. NB, remote triggering is possible. 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 and cracking which means that you influence weak layers and should avoid avalanche terrain. However, absence of signs does not mean it is safe.
Avalanche size:
3 - Large
Trigger/release:
High additional load
Distribution:
Some steep slopes
Probability:
Possible

What are avalanche problems?

0 mm precipitation.
Breeze from north.
-18 °C to -14 °C at 1100 m a.s.l.
Partly cloudy.

For updated info, please visit yr.no
8 mm precipitation, up to 15 mm in the most exposed areas.
Strong breeze from east., change to breeze from the northeast during the evening.
-17 °C to -5 °C at 1100 m a.s.l.
Plus degrees up to 200 m a.s.l. during the afternoon.
Cloudy.

For updated info, please visit yr.no

Observations the last 3 days

Rapportert av: StianS@forsvaret (***)

i kommune: BARDU

Single avalanche

1 - Small

Dry slab avalanche

Dangersign

Whumpf sound

Flere drønn i snøen på dette området.

Click here for pictures and the full observation

Rapportert av: Jonas.hansen@live.no (***)

i kommune: BARDU

Weather

Snow

-5.0 grader

Rapportert av: Stein Torbjørn (Unknown)

i kommune: BALSFJORD

Dangersign

Recent snowdrift

Område: På dette stedet. Beskrivelse: Øvelse

Rapportert av: tjg@nve (Unknown)

i kommune: BALSFJORD

Dangersign

Recent snowdrift

Område: På dette stedet. Beskrivelse:

Weather

Snow

Click here for pictures and the full observation

Rapportert av: StianS@forsvaret (***)

i kommune: BARDU

Dangersign

Whumpf sound

Område: På dette stedet. Beskrivelse:

Dangersign

Recent snowdrift

Område: I denne fjellsiden. Beskrivelse: Store skavldannelser i mange heng møt øst.

Weather

Not observed

7.0 grader

Click here for pictures and the full observation

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

i kommune: BARDU

Avalanche evaluation

2 Moderate

Avalanche problems

Buried weak layer of faceted snow near surface

Snow cover

135 cm snødybde

10 cm nysnø siste døgn

Avalanche activity

No avalanche activity Not given

Not given

Dangersign

No signs observed

Snow profile

Antall Lag: 5

Total dybde: 135,00 cm

Coloumn test

Good

CTH21@60cmQ2

Coloumn test

Good

ECTP23@60cmQ2

Weather

No precipitation

-7.0 grader

Click here for pictures and the full observation

Rapportert av: StianS@forsvaret (***)

i kommune: BARDU

Dangersign

Whumpf sound

Område: På dette stedet. Beskrivelse: Stort drønn i snøen, ca 100x100m.

Click here for pictures and the full observation

See all observations - RegObs

Avalanche problems

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.