Avalanche forecast for Vest-Finnmark Monday 2019-05-13

Highest danger level per day:
3
Considerable
Published:

Be careful in areas with fresh wind deposited snow in the mountains. Natural triggered wet avalanches can occur below the 0-isotherm.

Illustrasjon av ferdselsråd 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.
Illustrasjon av ferdselsråd Avoid steep (more than 30 degrees) areas 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.

Wind drifted snow (slab avalanches)

Buried weak layer of new snow

Read more about the avalanche problem
2 - Medium
Low additional load
Widespread steep slopes
Possible

Wet snow (loose snow avalanches)

Loose snow

Read more about the avalanche problem
2 - Medium
Spontaneous release
Specific steep slopes
Possible

What are avalanche problems?

Observations the last 3 days (map placed)

9 mm precipitation.
Breeze from north., change to fresh breeze from the northeast during the afternoon.
-3 °C to 3 °C at 1100 m a.s.l.
Plus degrees up to 1600 m a.s.l. during renoon.
Cloudy.

For updated info, please visit yr.no
16 mm precipitation, up to 30 mm in the most exposed areas.
Gale from west., change to strong breeze from the west during the evening.
-4 °C to 0 °C at 1100 m a.s.l.
Plus degrees up to 500 m a.s.l. monday night.
Cloudy.

For updated info, please visit yr.no

Observations the last 3 days

Vest-Finnmark / Alta

Snow

10.05.2019 kl. 13:32

800 masl

Johannes@obskorps (***)

Image Of Tests
Image 1 of 1 Of:  Tests Copyright:  Johannes@obskorps Comment:  Profil på ca 820moh.
ObsID: 194297

Vest-Finnmark / Alta

Snow

10.05.2019 kl. 12:46

805 masl

Johannes@obskorps (***)

Image Of Danger Sign
Image 1 of 1 Of:  Danger Sign Copyright:  Johannes@obskorps Comment:  I fjella sør for Langfjordbotn.

Avalanche Activity

10. May. During the day No avalanche activity

Weather

No precipitation 4 °C 6 m/s from SE ↖ 100% clouds Forholdsvis mildt det siste døgnet. Må sikkert opp på 11/1200 moh før du nærmer deg nullisotermen. Tror ikke det har vært noe nedbør det siste døgnet.

Avalanche Danger Assessment

2 Moderate Fokksnø i høyfjellet er hovedproblemet, men det stsbiliserer seg raskt med tanke på rimelig milde tempraturer. Det skal komme en del nedbør i form av regn, men tror det vil bruke litt tid nedover i snødekket siden sol/regnsksren er såtjukk og hard før det eventuelt metter snøen ved dypere gamle skarelag. Forecast correct

Avalanche Problems

Dry slab avalanche Buried weak layer of new snow Within half a meter The collapsing weak layer is thin < 3 cm. The overlying slab is soft. Difficult to trigger 1 - Small N, NE, W, NW above 900 masl

Snow Cover

100 cm in total Moderate snow drift 0 cm new snow Snow line at 0 masl. Layered snow begins at 400 masl Some loose snow (1-10cm) Moist Det meste av snøen er i ytre strøk av regionen. Under tregrensen er begynner det å bli lite snø en del plasser.

Danger Sign

Recent snowdrift Område: Generelt på fjellet. Beskrivelse: Lett vindtransport aller høyest på fjellet, men ser ut som det er først fra 1000/1100moh. Ikke veldig mye tilgjengelig snø å flytte på.

Tests

ECTX Good

ObsID: 194295

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.

For slope angle maps, download the app Varsom Regobs on App Store | Google Play or see our slope angle map at senorge.no ("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.