Swiss Federal Institute for Forest, Snow and Landscape Research WSL

Avalanche bulletin and snow situation
Edition: Tue 21.4., 17:00
Avalanche Bulletin

News and media relations

We will be glad to assist the media in their research and to arrange interviews with our in-house experts. Both media representatives and freelancers are very welcome to visit our research sites and study plots all over the country.

New

16.04.2026

CERC workshop: satellite radar for natural hazards

Practice-oriented workshop on InSAR for natural hazard detection and monitoring. 28.9.2026, Davos. Register now.

A researcher in a colorful winter jacket and gloves is focused on operating a scientific instrument. The device is testing a block of snow, in a laboratory setting.
15.04.2026

Avalanches: when the house of cards collapses

Weak layers in snow remain a mystery. For a new SLF study, controlled fractures of these layers were triggered in the laboratory.

A scenic mountain landscape featuring a snow-capped peak in the background. In the foreground, a ridge covered with rocky terrain and evergreen trees slopes down towards a densely forested valley. The sky is clear with a few clouds.
08.04.2026

How forests affect snow cover

Forest, sunshine and slope position all affect when snow melts. The SLF has conducted the first large-scale study into these interactions.

Alt text: A green house interior with various plants, including large leafy greens and smaller bushes. Sunlight filters through transparent walls, and the sky is visible through the openings. The structure appears modern and well-maintained.
07.04.2026

When trees get ‘sunburn’

Young trees are able to withstand high temperatures, but only if there is enough water available in the ground.

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