Avalanche forecast for Lyngen Friday 2019-01-18

2
Moderate
Published:

The old persistent weak layer of facets is proving reactive in the high alpine. Wind loading has triggered these instabilities and caused naturally released avalanches earlier this week.

Persistent weak layer (slab avalanches)

Buried weak layer of faceted snow near surface

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.
3 - Large
High additional load
Some steep slopes
Unlikely

What are avalanche problems?

2 mm precipitation.
Breeze from south., change to breeze from the northwest during the evening.
-19 °C to -12 °C at 1400 m a.s.l.
Partly cloudy.

For updated info, please visit yr.no
1 mm precipitation.
Calm/light breeze from south.
-19 °C to -12 °C at 1400 m a.s.l.
Cloudy.

For updated info, please visit yr.no

Observations the last 3 days

Rapportert av: HåvardT@met (*****)

i kommune: TROMSØ

Weather

Snow

Snow cover

Rapportert av: Snømann (Unknown)

i kommune: TROMSØ

Avalanche activity

No avalanche activity Not given

Not given

Weather

No precipitation

-8.0 grader

Dangersign

No signs observed

Område: Generelt på fjellet. Beskrivelse: Tur fra 20 moh til ca 700 moh. Fokksnøen har satt seg og ingen aktivitet rundt skarelagene.

Snow cover

150 cm snødybde

30 cm nysnø siste døgn

Avalanche evaluation

2 Moderate

Avalanche problems

Poor bonding between crust and overlying snow

Rapportert av: Hallvard@SVV (****)

i kommune: TROMSØ

Avalanche activity

No avalanche activity Not given

Not given

Weather

No precipitation

Dangersign

Large snowfall

Område: Fylket/varslingsregion. Beskrivelse: Generelt 15-20 cm tilgjengelig snø for transport. Gjelder nok store deler av regionen, fortsatt mye snø tilgjengelig også på normalt vindutsatte plasser.

Snow cover

20 cm nysnø siste døgn

Notes

Kommentarer til varselet: I skredfarevurdering: er det rett at det skal stå at kaldt vær stabiliserer fokksnøen? Kanskje menes noe annet, men det var mulig å misforstå. Synes snødekkehistorikken er litt rotete, med noen gjentagelser. Den kunne med fordel ha blitt ryddet litt opp i. Ellers spot on varsel (for 17/1) etter min mening.

Avalanche evaluation

2 Moderate

Snow profile (2012)

Snøprofil 900 moh. Nysnø i snøpakka representerer nedføyka løs nysnø, om nå er ganske omvandlet.

100364

Avalanche problems

Poor bonding between layers in wind deposited snow

Coloumn test

Good

Not given@0cmNot specified

Click here for pictures and the full observation

Rapportert av: Hallvard@SVV (****)

i kommune: TROMSØ

Snow cover

Rapportert av: Johan@svv (***)

i kommune: TROMSØ

Weather

No precipitation

Snow profile (2012)

Lager et profil på hjemmesiden når jeg kommer hjem

100352

Snow profile

Antall Lag: 6

Total dybde: 100,00 cm

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.