Avalanche forecast for Indre Troms Wednesday 2019-02-13

2
Moderate
Published:

Be aware that there can be pockets with persistent weak layers and unstable wind slabs. Be careful in lee areas with wind deposited snow, typically behind ridges, ribs and in gullies. Especially where the wind deposited slabs are thin or soft, slab avalanche is easier to trigger here.

Wind drifted snow (slab avalanches)

Poor bonding between layers in wind deposited 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.
2 - Medium
Low additional load
Some steep slopes
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.
2 - Medium
High additional load
Isolated steep slopes
Possible

What are avalanche problems?

2 mm precipitation.
Strong breeze from southeast., change to fresh breeze from the south during the evening.
-12 °C to -3 °C at 1100 m a.s.l.
Plus degrees up to 200 m a.s.l. during the evening.
Cloudy.

For updated info, please visit yr.no
4 mm precipitation.
Strong breeze from southwest., change to fresh breeze from the west during the evening.
-11 °C to -6 °C at 1100 m a.s.l.
Plus degrees up to 100 m a.s.l. during renoon.
Cloudy.

For updated info, please visit yr.no

Observations the last 3 days

Rapportert av: StianS@forsvaret (***)

i kommune: BARDU

Avalanche problems

Buried weak layer of new snow

Snow profile

Antall Lag: 6

Total dybde: 143,50 cm

Weather

Snow

Notes

Fersk vindtransportert snø har dannet et fokksnølag på mellom 15-25cm i sør- og østvendte heng. Under ligger det rester av nysnøen fra i går som lett går til brudd med liten tilleggsbelastning. Får utslag på 1. slag på 3 av 4 ECT-er med propagering på samtlige.

Coloumn test

Poor

CTE1@20cmQ2

Coloumn test

Poor

ECTP1@20cmQ2

Dangersign

Recent snowdrift

Område: I denne fjellsiden. Beskrivelse:

Click here for pictures and the full observation

Rapportert av: StianS@forsvaret (***)

i kommune: BARDU

Snow cover

90 cm snødybde

25 cm nysnø siste døgn

Notes

Mye nedbør som har lagt seg i hele fjellet, med enkelte perioder lett snøfokk gjennom dagen. Nå ligger det store mengder snø tilgjengelig for transport, og mange le-heng har bygd opp store fonner allerede.

Dangersign

Large snowfall

Område: Generelt på fjellet. Beskrivelse: Stort snøfall siste døgnet med lett snøfokk med vind fra vest. Rundt 25cm nysnø generelt under skoggrensa og oppbygging av skavler over 1 meter i leheng, spesielt i tilknytning til bekkedaler og juv.

Click here for pictures and the full observation

Rapportert av: torben@obskorps (***)

i kommune: BALSFJORD

Avalanche problems

Buried weak layer of faceted snow beneath a crust

Snow cover

100 cm snødybde

Coloumn test

Medium

ECTP16@45cmQ2

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.