The danger level is three on a five-point scale and is in effect until 6 p.m. on Thursday. The conditions are life-threatening, according to the site.
"Avoid all terrain that slopes more than 25 degrees. Also, do not stay below steep snowfields as avalanches can be triggered from a distance," the site says.
On Wednesday, five people were swept away in an avalanche at Riksgränsen in Kiruna municipality. One person was seriously injured.
A level four - high avalanche danger - is expected to apply on Friday in both Abisko/Riksgränsfjällen and Kebnekaisfjällen.
There is a moderate avalanche danger in the western Vindelfjällen mountains, the southern Lapland mountains, the southern Jämtland mountains and the western Härjedalen mountains.
Avalanche danger is divided into a five-point scale:
1. Low danger. Conditions are generally safe. Snow may be unstable in isolated places. Avalanches are unlikely.
2. Moderate danger. Hazardous conditions in parts of the terrain. It is possible for people to trigger avalanches, but spontaneous avalanches are unlikely.
3. Significant hazard. Hazardous conditions. Human-triggered avalanches are likely and spontaneous avalanches are possible.
4. High danger. Very dangerous conditions. Very likely to have spontaneous avalanches and human-triggered avalanches.
5. Very high danger. Human-triggered and spontaneous avalanches are certain to occur.
Source: Avalanche Forecasts.se
