On 7 September 2025, we made the following observations in the Blüemlisalp/Blüemlisalp Glacier, Fründehorn and Bütlassa areas, among others:
Blüemlisalp Glacier and Blüemlisalp Massif. Photo taken on 7 September 2025.
Blüemlisalphorn and north face. Photo taken on 7 September 2025.
Eastern tongue of the Blüemlisalp Glacier. Photo taken on 7 September 2025.
Detail of the eastern tongue of the Blüemlisalp Glacier. Photo taken on 7 September 2025.
Another part of the steeply sloping ice has broken off.
Western tongue of the Blüemlisalp Glacier. Photo taken on 7 September 2025.
Western tongue of the Blüemlisalp Glacier. Photo taken on 7 September 2025.
The western tongue has consisted of two parts for quite some time. A kind of trench has formed between the two parts, which extends further and further upwards.
Summit flank of Fründehorn. Photo taken on 7 September 2025.
The fresh snow hides the fact that the firn cap of the Fründehorn has completely melted away.
See also
Repeat photos Fründehorn.
Fründe Glacier and Fründejoch. Photo taken on 7 September 2025.
The fresh snow, which has remained on the northern flanks/walls and on the glacier, conceals the further melting of the glacier.
Fründe Glacier and Fründen Hut. Photo taken on 7 September 2025.
Above the yellow dot is the Fründen Hut (2561 m) belonging to the Swiss Alpine Club (SAC). To the right of it, you can see the tongue of the Fründen Glacier.
Bütlassa. Photo taken on 7 September 2025.
Due to the fresh snow, it is not clear how large the remains of the glacier on the north-west face of Bütlassa (formerly Bütlasse) still are. Not much is left.
See also
Repeat photos Bütlassa.
Zero degree limit: 4300 metres above sea level (forecast by MeteoSwiss)
Over the previous seven days, the zero degree line was between approx. 2400 and 4000 metres above sea level, averaging approx. 3370 metres above sea level.
In the days leading up to this, a few centimetres of fresh snow fell at altitudes of around 2300 metres above sea level.