Avalanche forecast for Nord-Troms Friday 2019-01-18

2
Moderate
Published:

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, a slab avalanche is easier to trigger here. A persistent weak layer is present deep in the snowpack, but locked by strong crust layers.

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

What are avalanche problems?

Observations the last 3 days (map placed)

1 mm precipitation.
Fresh breeze from southeast., change to breeze from the southeast during the afternoon.
-19 °C to -11 °C at 1100 m a.s.l.
Cloudy.

For updated info, please visit yr.no
1 mm precipitation.
Calm/light breeze from south., change to breeze from the northwest during the evening.
-18 °C to -12 °C at 1100 m a.s.l.
Cloudy.

For updated info, please visit yr.no

Observations the last 3 days

Nord-Troms / KÅFJORD

Snow

18.01.2019 kl. 11:58

850 masl

jan arild@obskorps (*****)

Image Of Snow Cover
Image 1 of 3 Of:  Snow Cover Copyright:  jan arild@obskorps Comment:  Avblåst over rygger og snø ligg ujevnt fordelt i terreng. Bildet fra Lilledalen ved Giilavarre
Image Of Snow Profile
Image 2 of 3 Of:  Snow Profile Copyright:  jan arild@obskorps Comment:  5 cm F nysnø/ 1cm P MF/ 6 cm 4F RG/ 1 cm p MF/ 5 cm F-4F begynnende kantkorn/ 30 cm 1F-p gammel smelteomvandlet snødekke. Profil tatt over konveks NV brattheng på 800 moh
Image Of Snow Profile
Image 3 of 3 Of:  Snow Profile Copyright:  jan arild@obskorps

Avalanche Danger Assessment

2 Moderate Fokksnøflak har stabilisert seg godt. Lite ubundet snø tilgjengelig til vindtransport som kan gi økning i skredfaren. Skal mye nedbør og vind for at skredfaren skal øke til betydelig. Forecast correct

Avalanche Problems

Dry slab avalanche Buried weak layer of new snow Within half a meter Difficult to trigger Possible 3 - Large Not given E, SE, S above 400 masl

Danger Sign

No signs observed

Snow Cover

No snowdrift 5 cm new snow Some loose snow (1-10cm) Dry Snødekke i høyden ligger snø ujevnt fordelt i terrenget. Avblåst og gammel skarelag etter siste mildvær i forrige uke over rygger. Mildværet har gått i to runder men vært kortvarig. Dannet to tynne skarelag i snødekket. Steder hvor snødekket er tynt er det utviklet lag med kantkorn. Stor temperaturgradient (6 grader på 13 cm). Men utbredelse og evne til forplantning virker å være svært begrenset. Fokksnøflak i leformasjoner virker å ha stabilisert seg godt.

Avalanche Activity

18. Jan. During the day (+01:00) No avalanche activity

ObsID: 176359

Nord-Troms / KÅFJORD

Snow

18.01.2019 kl. 10:10

508 masl

jan arild@obskorps (*****)

Image Of Snow Cover
Image 1 of 2 Of:  Snow Cover Copyright:  jan arild@obskorps
Image Of Snow Cover
Image 2 of 2 Of:  Snow Cover Copyright:  jan arild@obskorps

Snow Cover

120 cm in total No snowdrift 4 cm new snow Dry Litt nysnø over godt bundet fokksnø. Over konveks ligger løssnø over tynn hinne med skare. Men ser ikke kantkornutvikling

ObsID: 176319

Nord-Troms / KÅFJORD

Snow

18.01.2019 kl. 09:15

33 masl

jan arild@obskorps (*****)

Weather

No precipitation -7 °C Lette snøfiller men blir ikke mye mengde av dette

ObsID: 176286

Nord-Troms / D1907(55340) Nord Troms 2017-2022

Snow

18.01.2019 kl. 06:00

masl

drift@svv (**)

Danger Sign

No signs observed

Weather

No precipitation -4 °C Arnøya (0moh) kl 06:00 0 cm nysnø akkumulert siste døgn.

Avalanche Activity

No avalanche activity Gjelder Fv347 Lauksundskaret - Arnøyhamn,

ObsID: 176267

Nord-Troms / D1907(55340) Nord Troms 2017-2022

Snow

17.01.2019 kl. 06:00

masl

drift@svv (**)

Danger Sign

No signs observed

Weather

Snow -3 °C Arnøya (0moh) kl 06:01 1 cm nysnø akkumulert siste døgn.

ObsID: 176062

Nord-Troms / D1907(55340) Nord Troms 2017-2022

Snow

17.01.2019 kl. 06:00

masl

drift@svv (**)

Danger Sign

No signs observed

Weather

No precipitation -4 °C Arnøya (0moh) kl 06:01 0 cm nysnø akkumulert siste døgn.

Avalanche Activity

No avalanche activity Gjelder Fv347 Lauksundskaret - Arnøyhamn,

ObsID: 176266

Nord-Troms / D1907(55340) Nord Troms 2017-2022

Snow

16.01.2019 kl. 17:35

masl

drift@svv (**)

Danger Sign

No signs observed

ObsID: 176001

Nord-Troms / D1907(55340) Nord Troms 2017-2022

Snow

15.01.2019 kl. 21:00

masl

drift@svv (**)

Danger Sign

No signs observed

ObsID: 175835

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.