Persistent weak layers
- Above 2,000 m
Still a highly unfavorable snowpack
Still a highly unfavorable snowpack
Older snowdrift accumulations can still be triggered. Marked weak layers in the old snowpack can be triggered by one single winter sports enthusiast, particularly on steep, little skied on slopes. The danger zones are not visible. Whumpf noises and fractures when treading on the surface are alarm signals. Activities in backcountry demand careful evaluation of the terrrain and assessment of the dangers. Due to higher daytime temperatures and solar radiation, isolated loose-snow avalanches can be expected in very steep terrain.
A small amount of fresh snow blankets older, generally somewhat stabilized snowdrift accumulations. The often lie deposited on loosely-packed snow or surface hoar and atop a weak old snowpack surface at higher altitudes (particularly on steep shady slopes). On sunny slopes and generally at lower altitudes, the snowpack becomes thoroughly moist, then generates a breakable melt-freeze crust during the nocturnal hours. The snowpack on steep south-facing slopes is often capable of bearing loads.
Monday will be quite sunny above the high fog. In the afternoon, some cirrus clouds will move in. Temperature at 2000m: -6 to -2 degrees; at 3000m: -8 degrees. Light winds at high altitudes.
Weak layers in the old snow can still be triggered by winter sports enthusiasts.
Bulletin data: Avalanche Warning Service Vorarlberg (CC BY 4.0)