WSL Institute for Snow and Avalanche Research SLF

Research 15.12.2025
Switch flipped for conditions conducive to fire
Switch flipped for conditions conducive to fire

Dry weather and low humidity are the main drivers of forest fires, with temperature playing a minor role.

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Hubschrauber mit rotem Löschbehälter fliegt vor orangefarbenem Rauch über grünem Feld mit Feuerwehrzelt.
 
Research 10.12.2025
CCAMM: conclusion highlights changing risks
CCAMM: conclusion highlights changing risks

Programme ends: researchers reveal how climate change is altering natural hazards in the Alps – and where action is now required.

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A mountain landscape featuring snow-covered peaks, rocky cliffs, and a waterfall flowing into a river. In the foreground, a green plain with scattered houses. Three people sit at a table examining maps or plans. The sky shows the sun, clouds, and wind lines indicating weather phenomena. On the right side, a grid pattern is overlaid on a mountain.
 
Services and products 03.12.2025
New to White Risk: avalanche reporting made easy
New to White Risk: avalanche reporting made easy

This season, citizen scientists have an even simpler and more intuitive way to report avalanches – and so help with avalanche warnings.

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Zwei Personen mit Skistöcken wandern auf einem schneebedeckten Bergpfad. Im Vordergrund ist eine Person unscharf zu sehen, während die zweite Person weiter entfernt und scharf abgebildet ist. Im Hintergrund sind schneebedeckte Berge und ein bewölkter Himmel zu erkennen. Im linken Bildbereich sind halbtransparente Benutzeroberflächen mit Karten, Textfeldern und Symbolen eingeblendet, die Informationen zur Lawinenbeobachtung und zur Meldung von Lawinen, Wummgeräuschen, Kommentaren und Triebschnee zeigen.
 
Research 18.11.2025
By a mountain stream with folding rule and laptop
By a mountain stream with folding rule and laptop

Extreme water temperatures harm people, nature and the economy. The SLF is researching how they occur so that countermeasures can be taken.

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A woman in a red outdoor jacket sits on rocks in a mountainous landscape, writing in a notebook, with a laptop on her lap.
 

Research for people and the environment in a changing world

NEWS

Snow and avalanches
15.12.2025
Snow-covered mountain with visible avalanche tracks under a clear blue sky, blurred propeller in the foreground.

Winter 24/25 was the third warmest since 1864

Warm temperatures and low precipitation lead to low snowfall – the 2024/25 winter report is here. (only in German and French)

Research
26.11.2025
A panoramic view of majestic snow-covered mountains under a clear blue sky. The landscape features glaciers and rugged terrain, showcasing the beauty of a winter alpine environment. Snow blankets the ground, creating a serene and untouched atmosphere.

Avalanches sustain glaciers worldwide

An international research team shows that avalanches contribute significantly to the health of many glaciers.

Research
25.11.2025
Mountain village Ftan in the Lower Engadine with green meadows in the foreground and snow-covered peaks of the Swiss Alps in the background.

Mountain climate change: billions at risk

Scientists warn: development faster and more intensely than predicted, with devastating consequences for billions of people.

Institutional
24.11.2025
Man standing in front of a blackboard with physics formulas

“Everything should be made as simple as possible.”

The students of ETH Zurich have voted: SLF researcher Johan Gaume receives the Golden Owl 2025 for excellent teaching.

Services and products
07.11.2025

White Risk is Switzerland's best app

The Best of Swiss Apps jury has named White Risk, the SLF app for avalanche prevention, Master of Swiss Apps.

Services and products
03.11.2025
Diagram shows different tree species in a three-dimensional grid with labels for growth, competition, reproduction, seed production, seed dispersal and mortality.

Top models and hard facts: calculating the world

Forests, rockfalls and insects: researchers at WSL and SLF are modelling nature. How, why and for whom explains the new DIAGONAL.

All news

AvaBlog

Our experts analyze the avalanche situation.
7 December 2025

current AvaBlog (in German)
current AvaBlog (in French)