Avalanche forecast for Jotunheimen Tuesday 2019-03-26

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.

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.
3 - Large
High additional load
Specific steep slopes
Possible

Persistent weak layer (slab avalanches)

Buried weak layer of faceted snow above a crust

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
High additional load
Isolated steep slopes
Possible

What are avalanche problems?

Observations the last 3 days (map placed)

2 mm precipitation.
Moderate gale from northwest., change to moderate gale from the west during the afternoon.
-12 °C to -4 °C at 1800 m a.s.l.
Cloudy.

For updated info, please visit yr.no
1 mm precipitation.
Breeze from north., change to gale from the northwest during the afternoon.
-12 °C to -7 °C at 1800 m a.s.l.
Partly cloudy.

For updated info, please visit yr.no

Observations the last 3 days

Jotunheimen / VANG

Snow

25.03.2019 kl. 18:20

1121 masl

paul@wyssen (****)

Danger Sign

Recent snowdrift Pålagring av snø fra NV frisk bris.

Weather

-5 °C 9 m/s from NW ↘ 70% clouds NV frisk bris siden kl 10:00 mandag. Har mer eller mindre vedvart hele dagen. Begrenset snøtransport tross vinden. Enkelte leformasjoner pålagres, mens andre leformasjoner pålagres ikke.

ObsID: 188143

Jotunheimen / LUSTER

Snow

25.03.2019 kl. 14:18

1286 masl

Rolf B. (**)

Danger Sign

No signs observed

ObsID: 188135

Jotunheimen / VANG

Snow

25.03.2019 kl. 14:15

1218 masl

paul@wyssen (****)

Image Of Snow Profile
Image 1 of 4 Of:  Snow Profile Copyright: 
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Image 2 of 4 Of:  Snow Profile Copyright:  Wyssen Norge AS Comment:  Snøprofil tatt omtrent ved fotografens posisjon.
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Image 3 of 4 Of:  Snow Profile Copyright:  Wyssen Norge AS Comment:  Nye innblåste fokksnøflak som bandt seg dårlig til glatt skare.
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Image 4 of 4 Of:  Snow Cover Copyright:  Wyssen Norge AS Comment:  Sikt mot avblåste rygger over østvendte heng. Formasjoner jeg hadde sikt til som hadde vært eksponert for V vind søndag virket avblåste. Leformasjoner hadde begrenset mengde løs snø tilgjengelig for transport.

Snow Cover

Some snow drift Storm slab (soft slab) Dry Lett snøfokk mot slutten av observasjonsturen. Pålagringen mellom kl 13:00 og 14:30 var begrenset.

Snow Profile

2 stratigraphy layers observed Snødekket fra gliflaten til kontrollert utløst skred søndag. Glatt snøoverflate (skare). Ny pålagret snø bandt seg dårlig til overflaten.

ObsID: 188142

Jotunheimen / VANG

Snow

25.03.2019 kl. 14:00

1171 masl

paul@wyssen (****)

Image Of Snow Profile
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Image 2 of 4 Of:  Snow Profile Copyright:  Wyssen Norge AS Comment:  Før graving og logging. Stav (140 cm) står i skare.
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Image 3 of 4 Of:  Snow Profile Copyright:  Wyssen Norge AS Comment:  Bruddflate for skredet synlig i bakgrunnen. Lamineringer av islag og kant ved lagmarkeringene.
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Image 4 of 4 Of:  Snow Profile Copyright:  Wyssen Norge AS Comment:  148 cm fra bruddflate til snøoverflate.

Avalanche Activity

25. Mar. During the day No avalanche activity Ingen ny skredaktivitet etter skredkontroll søndag.

Snow Cover

Some snow drift Storm slab (soft slab) Dry Vindpakket myk snø generelt i terrenget. Bruddflate for kontrollerte skred var stort sett glatt skare som trolig binder seg dårlig til ny innblåst snø.

Snow Profile

9 stratigraphy layers observed Kontrollert skred utløst på 148 cm dybde. Total snødybde inkl flaket: 322 cm.

ObsID: 188140

Jotunheimen / VANG

Snow

25.03.2019 kl. 11:40

939 masl

Leif@ObsKorps (*****)

Image Of Avalanche Activity
Image 1 of 2 Of:  Avalanche Activity Copyright:  Leif@ObsKorps
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Image 2 of 2 Of:  Avalanche Activity Copyright:  Leif@ObsKorps

Avalanche Activity

25. Mar. During the day Dry slab avalanche Few (2-5). 3 - Large. Spontaneous release Widespread steep slopes. NE, E, SE. Between 1400 masl and 1000 masl Alle kjente normale skredkøp fra Skørsnøse løsnet naturlig under uværet 23.03.

ObsID: 188105

Jotunheimen / Synshorn

Snow

25.03.2019 kl. 09:35

1135 masl

Andreas dahl (Unknown)

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Avalanche Activity

25. Mar. During the day Dry slab avalanche Few (2-5). 3 - Large Specific steep slopes. E. Not between 1200 masl and 1000 masl

ObsID: 188029

Jotunheimen / VANG

Snow

24.03.2019 kl. 21:05

1097 masl

Leif@ObsKorps (*****)

Avalanche Activity

24. Mar. 0-6 Dry slab avalanche Several (6-10). 3 - Large. Spontaneous release Widespread steep slopes. NE, E, SE. Between 1300 masl and 1100 masl Mange naturlig utløste skred trolig utløst natt til 24.03 eller 23.03. Mel2 naturlig over vei str. 3,5, Mel1 naturlig str. 2, Varden naturlig på vei str.2, brattheng Melvike str. 3, langt ut på myra til skiløypa, støl1 over vei str. 2,5, flere mindre str.1-2 skred fra støl1 og langs leside østover. Langøddin str.2 i natt, brattheng gamle skiheis str. 3 i natt, skørsnøse str. 3 i natt.

ObsID: 187962

Jotunheimen / VANG

Snow

24.03.2019 kl. 21:04

1104 masl

Leif@ObsKorps (*****)

Avalanche Observation

24. Mar 15:00 Dry slab avalanche 2 - Medium Released by explosives E-facing Avalanche release at 1308 masl and ended at 1150 masl Lee side Mel2

ObsID: 187960

Jotunheimen / VANG

Snow

24.03.2019 kl. 20:55

1110 masl

Leif@ObsKorps (*****)

Image Of Avalanche Observation
Image 1 of 5 Of:  Avalanche Observation Copyright:  Leif@ObsKorps
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Image 2 of 5 Of:  Avalanche Observation Copyright:  Leif@ObsKorps
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Image 3 of 5 Of:  Avalanche Observation Copyright:  Leif@ObsKorps
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Image 4 of 5 Of:  Avalanche Observation Copyright:  Leif@ObsKorps
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Image 5 of 5 Of:  Avalanche Observation Copyright:  Leif@ObsKorps

Avalanche Observation

24. Mar 14:30 Dry slab avalanche 4 - Very large Released by explosives E-facing Avalanche release at 1205 masl and ended at 1083 masl Buried weak layer of faceted snow beneath a crust 100 cm high and 350 m wide fracture Lee side Støl2 Trolig str. 3,5. Svært bred forplantning. Skredet gikk ca 100 m over vei og 50m utpå isen. Stor mektighet i skredmassene. forplantning til over Tyinstølen.

ObsID: 187959

Jotunheimen / VANG

Snow

24.03.2019 kl. 20:48

1091 masl

Leif@ObsKorps (*****)

Image Of Avalanche Observation
Image 1 of 4 Of:  Avalanche Observation Copyright:  Leif@ObsKorps
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Image 2 of 4 Of:  Avalanche Observation Copyright:  Leif@ObsKorps
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Image 3 of 4 Of:  Avalanche Observation Copyright:  Leif@ObsKorps
Image Of Avalanche Observation
Image 4 of 4 Of:  Avalanche Observation Copyright:  Leif@ObsKorps Comment:  Naturlig utløst natt til 24.03. Bruddkant under tårnet.

Avalanche Observation

24. Mar 14:15 Dry slab avalanche 3 - Large Released by explosives NE-facing Avalanche release at 1194 masl and ended at 1083 masl Steep slope Langøddin Str. 2,5 krysset veien to steder. Naturlig utløst str2 i natt under tårnet.

ObsID: 187958

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.