Avalanche forecast for Tromsø Monday 2018-12-17

Highest danger level per day:
1
Low
Published:

Be careful in areas with fresh wind deposited snow. Keep in mind that even small avalanches can have consequences if you fall into rockery terrain.

Illustrasjon av ferdselsråd Be careful where the avalanche problem is found in combination with terrain traps.You will only find the avalanche problem in a few isolated areas.

Wind drifted snow (slab avalanches)

Poor bonding between layers in wind deposited snow

Read more about the avalanche problem
2 - Medium
High additional load
Isolated steep slopes
Possible

What are avalanche problems?

Observations the last 3 days (map placed)

0 mm precipitation.
Breeze from south.
-7 °C to -2 °C at 700 m a.s.l.
Plus degrees up to 200 m a.s.l. during renoon.
Clear skies.

For updated info, please visit yr.no
0 mm precipitation.
Breeze from south.
-8 °C to -3 °C at 700 m a.s.l.
Plus degrees up to 100 m a.s.l.
Clear skies.

For updated info, please visit yr.no

Observations the last 3 days

Tromsø / Tverrfjellet

Snow

16.12.2018 kl. 11:30

435 masl

harvey@ObsKorps (***)

Image Of Snow Profile
Image 1 of 4 Of:  Snow Profile Copyright: 
Image Of Weather
Image 2 of 4 Of:  Weather Copyright:  Harvey Goodwin
Image Of Weather
Image 3 of 4 Of:  Weather Copyright:  Harvey Goodwin
Image Of Snow Profile
Image 4 of 4 Of:  Snow Profile Copyright:  Harvey Goodwin Comment:  Lagdelt under skarelaget i kantkorn. NB. Gikk ikke til brudd under stabilitetstest

Snow Profile

7 cm K MFcr 0 mm/0 mm D, 1.5 cm 1F RG/FCxr 0 mm/0 mm D, 0.5 cm K MFcr 0 mm/0 mm D, 1 cm 4F FCxr/FCso 1 mm/1 mm D, 6 cm P MFcl/FCxr 1 mm/2 mm D, 26 cm 1F MFcl 0 mm/1 mm D-M, 1 cm K MFcl 1 mm/4 mm D -10.9 °C @ 0 cm, -9.3 °C @ 3 cm, -5.2 °C @ 8 cm, -3.7 °C @ 13 cm, -0.7 °C @ 23 cm, 0 °C @ 33 cm, 0 °C @ 43 cm

Tests

ECTX Good bør følge med utvikling av kantkorn under skarelaget i tiden framover

Danger Sign

No signs observed

Snow Cover

No snowdrift 0 cm new snow Snow line at 0 masl. Layered snow begins at 0 masl Crust Dry Overflate skarelag helt til topps (ca.520m). Fra ca. 300m ligger tørrsnø under 5-10cm skarelag. Snøen under dette og mot bakken er smelteomvandlet og muligens litt fuktg. Under skarelaget er tendens til dannelse av kantkorn. Dette bør følges med i tiden framover med kaldt vær da det var en sterk temp gradient nært overflaten i dag.

Weather

No precipitation -5 °C 1 m/s from NW ↘

Avalanche Danger Assessment

1 Low Overflate er skarelag til topps på Tverrfjellet og snødekket ansees som stabilt. kaldt tørt vær vil stabilisere snødekket ytterligere Forecast correct

Avalanche Activity

16. Dec. During the day (+01:00) No avalanche activity

ObsID: 171610

Tromsø / Tromsø

Snow

14.12.2018 kl. 10:28

752 masl

torben@obskorps (***)

Image Of Weather
Image 1 of 5 Of:  Weather Copyright:  torben@obskorps
Image Of Weather
Image 2 of 5 Of:  Weather Copyright:  torben@obskorps Comment:  Mot buren
Image Of Snow Cover
Image 3 of 5 Of:  Snow Cover Copyright:  torben@obskorps Comment:  Våt snø. Ca opp til 350-400moh Tenker hele snødekket generellt er vått. Bilde fra Ca 300moh
Image Of Snow Cover
Image 4 of 5 Of:  Snow Cover Copyright:  torben@obskorps Comment:  Fuktig og kram snødekke på Ca 500moh
Image Of Tests
Image 5 of 5 Of:  Tests Copyright:  torben@obskorps Comment:  Blokktest Ca 750moh NØ. Q2/50cm løsnet på nedføyka nysnø, mulig det øverste 10cm løsnet pga dårlig binding i fokksnøen

Snow Cover

Weather

Drizzle 4 °C 4 m/s from S ↑ 100% clouds observasjon fra parkering . Sluddbyger fra ca 350-400moh. Snøbyger fra ca 600/650moh

Notes

Tenker at overflaterimet fra onsdag er borte de fleste plasser I denne regionen

Avalanche Problems

Dry slab avalanche Buried weak layer of new snow Within half a meter The weak layer collapses easily and clean (easy propagation). The collapsing weak layer is thin < 3 cm. Difficult to trigger Possible 1 - Small Specific steep slopes N, NE, E above 600 masl

Avalanche Danger Assessment

2 Moderate Forecast correct Varsom har et riktig og godt bilde av snødekket

ObsID: 171408

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.