On 23 August 2017, 3 million m3 of rock fell from Piz Cengalo (3369 m) in Bregaglia. A number of debris flows carried over 300,000 m3 of rock through Val Bondasca to the village of Bondo, and more such flows were anticipated in the event of heavy rainfall. The Bondo rock avalanche was one of the biggest in Switzerland in the past 100 years.

Given the rarity of rock avalanches and debris flows of this magnitude, the FOEN, in consultation with the Canton of Graubünden, decided that the event should be documented in aerial photographs, and documents made available for detailed analysis. swisstopo conducted aerial surveys of the area on 25 August, 30 August and 5 September. In each case, this resulted in single images (oblique) and an orthophoto mosaic with a ground resolution of 12.5 cm.

Based on SLF avalanche bulletin and snow situation (in german)

Two periods of heavy snowfall led to very critical avalanche situations in the Alps in late 2017 and early 2018. Early January 2018 saw a raft of major avalanches, mainly affecting the Valais, central Graubünden and the Engadine. As the situation started to improve in the north, intense snowfall began in the southern part of the Valais, leading to very extensive avalanche activity until mid-January.

The avalanche activity was comparable to that of 1999. This prompted the FOEN, in consultation with the affected cantons, to commission the collection of satellite data (taskings).
In an initial phase, four areas – Lower Engadine, Goms, Mattertal and Val d'Herens – were surveyed using the SPOT-6 satellite (1.5 m). In addition, five 10x10 km core zones were recorded by the very-high-resolution systems Pleiades (50 cm) and WorldView-4 (30 cm). As the weather forecast was unfavourable, TerraSAR-X (1 m and 3 m) was also deployed. In the canton of Valais, the SPOT-6/7 satellites (1.5 m) surveyed the regions of Simplon, Saastal, Mattertal and Val d'Anniviers.
All the image data was subsequently orthorectified by swisstopo.

Based on SLF avalanche bulletin and snow situation (in german)

A combination of orographic lift, very abundant precipitation and heavy wind, just days after previous heavy snowfall, led to the highest danger level (5, very high) being triggered locally on Monday, 14 January. Some very big avalanches occurred, and many transport routes had to be closed in the interests of safety.

The avalanche activity was comparable to that of 2018. This prompted the FOEN, in consultation with the affected cantons, to commission the collection of satellite data (taskings).
Approximately 10,000 km2 of the Central and Eastern Alps were surveyed by SPOT-6 (1.5 m) on 16 January 2019, with the data subsequently orthorectified by swisstopo.

In July 2021, there was sustained and repeated high precipitation in the Aare catchment area over several weeks (main event 12-15 July). This led to flooding on Lakes Biel and Neuchâtel with simultaneous high discharges in the Aare of at least 750 m3 /s. In order to investigate the behaviour of the system during such prolonged high discharges in the Aare, aerial flights were carried out along the Aare from the outflow from Lake Biel to the “Wasserschloss” (confluence of the Reuss and Limmat rivers at Windisch), divided into two different flight days.

The QuickOrthophotos of the aerial surveys from Lake Biel to Olten on 23 July 2023 and from Olten to the “Wasserschloss” on 29 July 2023 in the RGBN channels with a ground resolution of 10 cm are available.

In the night of 29 to 30 January 2022, a fire spread from the Alpe di Neggia (TI), which had been caused by improper extinguishing of a campfire. It spread to the entire summit area of Monte Gambarogno above Lake Maggiore over an area of six hectares. By Swiss standards, this was an unusually large area of forest fire. Ticino was experiencing a severe drought at the time. In some areas there had been no precipitation since the beginning of December 2021. Since 13 January 2022, an official ban on outdoor fires has been in place due to the drought. The rapid and large spread of the fire was favoured by a strong northerly foehn. Almost 60 inhabitants of the village of Indemini and the surrounding hamlets had to be evacuated as a precaution. The extinguishing work took about two weeks. At times, three helicopters, a Super Puma of the Swiss army and two Italian fire-fighting planes were used for the extinguishing work.

Aerial surveys were carried out to document the event and as a basis for subsequent monitoring of vegetation development after the event. Data with a recording date of 9 February 2023 are available as QuickOrthophoto RGBN, Orthophoto RGB and Orthophoto NRG with a ground resolution of 20 cm.

Due to the dry first half of 2022 and the below-average precipitation in July and until mid-August The water levels in Swiss waters are significantly lower than usual in summer. In mid-August, numerous small and medium-sized rivers recorded low water levels, which statistically occur every two to ten years, and in some cases less frequently. An exception were the mountain rivers in glacier catchment areas, where melt water caused the water levels to rise significantly during the day. Large rivers such as the Aare, Limmat, Reuss and Rhine also recorded significantly below-average water levels. The water levels of many lakes were lower than usual in the summer months. Lake Lucerne, Lake Walen and Lake Constance as well as Lake Maggiore and Lake Lugano showed water levels well below average. Since the beginning of summer, sporadic heavy thunderstorms had caused small and medium-sized rivers to rise sharply for a short time, but this did not lead to a fundamental easing of the low-water situation. By mid-August, many watercourses had dried up.

In order to gain scientific and practical knowledge for future drought periods, a large-scale imagery flight was carried out on 13 August 2022 in an area of approx. 2400 km2 between Lake Geneva, Lake Neuchâtel and Fribourg.

The data from the aerial surveys are available with a ground resolution of 25 cm as QuickOrthophoto RGBN and as Orthophoto RGB and NRG.