Dave Petley (@davepetley.bsky.social)

@kristencook.bsky.social Oct 11, 2026, 6:30 AMReposted by @davepetley.bsky.social

Another flow disaster in Nepal, just one catchment to the west of the Trishuli. This one is also caused by a landslide, but with a different mechanism - the landslide dammed the river and an outburst flood followed. Landslide was at 4:22 local time, and the largest flood pulse started around 6 am.

spectrogram of seismic data on 10 October from KKN station. background is purple to black, and a yellow spike shows a large landslide

@davepetley.bsky.social Oct 11, 2026, 6:20 AM

#nepal has suffered another significant landslide and flood event, this time on the Budhi Gandaki river at Chumnubri & Dharche in Gorkha. The cause may be a valley blocking landslide near Chumchet. At least 5 people may be missing and bridges & houses have been destroyed.
youtube.com/shorts/ZBlOC...

@davepetley.bsky.social Oct 8, 2026, 6:36 AM

On 25 January 2026, a very large landslide reactivated at Niscemi in Sicily, Italy, causing significant damage. A new paper in the journal Landslides (Guerriero et al. 2026) describes the event:-
eos.org/thelandslide...
Original paper (which is open access):-
link.springer.com/article/10.1...

Map showing major deformational features of the Niscemi landslides. Inset picture a depicts the western sector of the upper part of the southern Niscemi landslide (last access 06 August 2026; https://www.meteoweb.eu/2026/02/ciclone-harry-e-niscemi-la-consulta-degli-ingegneri-propone-una-task-force-tecnica-a-supporto-della-regione/1001896651/). From Guerriero et al. (2026), published under a CC license.

@davepetley.bsky.social Oct 7, 2026, 7:02 AM

A new paper (Xie et al. 2026) provides a detailed analysis of the landslides triggered by Typhoon Doksuri in northern China in 2023. They have mapped over 100,000 failures, triggered by rainfall totals that exceeded 500 mm.
eos.org/thelandslide...
Original study: link.springer.com/content/pdf/...

Cl;ustering of landslides triggered by Typhoon Doksuri across various counties of northern China. Figure from Xie et al. (2026), published under a CC license.

@davepetley.bsky.social Oct 6, 2026, 6:56 AM

Satellite images by @planet.com have started to reveal the hundreds of shallow landslides and channelised debris flows triggered by a major rainfall event in North Korea at the end of August 2026.
eos.org/thelandslide...

Planet Labs image of Rason after the 31 August 2026 rainfall event. Image copyright Planet Labs, used with permission, collected on 3 September 2026.

@davepetley.bsky.social Oct 2, 2026, 7:13 AM

On the CESBIO Multitemp blog, Simon Gascoin has posted high resolution CNES Pléiades satellite imagery of the source area of the 26 August 2026 Langtang Lirung landslide in Nepal.
My summary: eos.org/thelandslide...
Simon's original post: www.cesbio.cnrs.fr/multitemp/cl...

@davepetley.bsky.social Oct 1, 2026, 7:22 AM

Examination of @planet.com satellite imagery before the 26 August 2026 Langtang Lirung landslide in Nepal, which initiated the massive debris flow and flood, suggests that there were surprisingly few signs of incipient failure:-
eos.org/thelandslide...

Satellite image draped onto the Google Earth DEM for the Langtung Lirung landslide. Image copyright Planet Labs, used with permission, collected on 25 August 2026.

@davepetley.bsky.social Sep 30, 2026, 5:00 PM

Praful Rao has posted a very moving description of the impact of the 26 August 2026 Nepal-Tibet landslide and debris flow on the Save the Hills blog:-
savethehills.blogspot.com/2026/09/the-...

@davepetley.bsky.social Sep 30, 2026, 6:50 AM

On 6 August 2025, the Dayuan landslide in Guangzhou, China killed 7 people. It was triggered by rainfall onto an area affected by a wildfire a few months earlier.
eos.org/thelandslide...

Google Earth image of the location of the 6 August 2025 Dayuan landslide.

@davepetley.bsky.social Sep 29, 2026, 6:55 AM

On 27 September 2026, a large landslide at Lete on the Kaligandaki River in Nepal was captured on a very good video.
eos.org/thelandslide...

Google Earth image of the site of the 27 September 2026 landslide on the Kaligandaki River in Nepal.

@davepetley.bsky.social Sep 28, 2026, 11:34 AM

Not the events described here, surely?

@davepetley.bsky.social Sep 28, 2026, 7:23 AM

Heavy rainfall in Nepal since Thursday has triggered 285 landslides, leading to 15 fatalities with a further three people missing and three people injured.
eos.org/thelandslide...

Recorded landslide incidents in Nepal in the period 24 to 28 September 2026, via the Bipad portal.

@lordbonkers.bsky.social Sep 19, 2026, 8:15 PMReposted by @davepetley.bsky.social

One for every Labour MP to read. #ldconf

@davepetley.bsky.social Sep 24, 2026, 7:14 AM

A new paper (He et al. 2026) in the journal Landslides describes the breach of the massive Matai'an Rover landslide dam in Taiwan in September 2025, which killed 24 people.
eos.org/thelandslide...

The aftermath of the Matai'an landslide dam breach. Image using images from Planet Labs, from He et al. (2025).

@davepetley.bsky.social Sep 22, 2026, 7:25 AM

In Japan, record breaking rainfall associated with Typhoon Dujuan has triggered at least six fatal landslides in the Kanto region:-
eos.org/thelandslide...
Image by James Reynolds / EarthUncutTV - www.youtube.com/earthuncuttv

A debris flow on Highway 34 near Kyonan Hota IC in Chiba triggered by Typhoon Dujuan. Image tweeted by James Reynolds.

@davepetley.bsky.social Sep 21, 2026, 6:56 AM

On Wednesday 7 October 2026 at 6 pm I will deliver my NTU inaugural lecture entitled “Landslides in a changing climate”. This is a public lecture, so please do come along.
www.ntu.ac.uk/about-us/eve...

@davepetley.bsky.social Sep 17, 2026, 6:55 AM

It is so frustrating that the Guardian describes this as "the collapse of a glacier". The report itself is very specific on this issue: "While initially thought to be a glacier collapse, analysis of satellite imagery indicates that the event actually involved a large rock avalanche".

@eos.org Sep 16, 2026, 9:38 PMReposted by @davepetley.bsky.social

Have you been keeping up with @davepetley.bsky.social's coverage of the debris flow in Nepal and Tibet over in our Landslide Blog? Here's a roundup. ⬇️

@davepetley.bsky.social Sep 16, 2026, 7:10 AM

This is a gift link to the original paper (Wang et al. 2026) in the journal (Landslides):-
rdcu.be/YfUaNyAVzQja

@davepetley.bsky.social Sep 16, 2026, 7:08 AM

A new paper in the journal Landslides (Wang et al. 2026) suggests that the bedrock failure that initiated the Nepal landslide disaster may have displayed measurable precursory deformation.
eos.org/thelandslide...