Evacuations ordered downstream of the Matai’an landslide dam in Taiwan
Extremely heavy rainfall associated with super typhoon Ragasa could cause the Matai-an landslide dam to overtop in the next two days. In East Asia, super typhoon Ragasa is moving westwards between Taiwan and the Philippines. At the time of writing, Earth Cut TV has a live feed from the Batanes Islands, almost in the path of the eye (although there is a good chance that data connectivity will be lost in the storm):- This is an exceptional storm, bringing heavy rainfall and strong winds to a wide area. The storm has the potential to bring extremely heavy rainfall to southern…
The strange case of the 31 August 2025 landslides in Sudan
Local reports suggested that over 1,500 people died in this event, and a high death toll was reported by some international agencies. However, examination of satellite imagery casts significant doubt on this interpretation. It has been widely reported that on 31 August 2025, a devastating landslide occurred at Tarasin (there are various spellings of this place) in the Marrah Mountains in Central Darfur, Sudan. Initial reports indicated that 1,000 people had been killed, making this the most deadly landslide of 2025 to date, whilst subsequent reports elevated this number to over 1,500. The reports were given credence by organisations such…
The cause of the 5 August 2025 Dharali disaster in India
Planet satellite imagery has started to reveal the events that killed 70 people at in northern India. It clearly indicates that intense rainfall triggered landslides that transitioned into channelised debris flows. On 5 August 2025, a series of terrifying landslides struck Dharali in Uttarkashi, Uttarakhand, northern India. I blogged about this at the time – the Wikipedia page for the disaster indicates that about 70 people were killed. In the aftermath of the disaster, there was some very strange speculation about the cause. For example, the Times of India quotes an expert from the India Meteorological Department as follows: “Only very light…
The 26 August 2025 landslide on the Vaishno Devi pilgrimage route in India
On 26 August 2025, a landslide triggered by extraordinary rainfall killed at least 34 people and injured another 20 individuals. On 26 August 2025, extremely intense late monsoon rainfall struck parts of Jammu and Kashmir in northern India, triggering extensive flooding and landslides. Unfortunately, a significant landslide occurred on the route to the Vaishno Devi…
Fatal landslides in June 2025
In June 2025, I recorded 51 fatal landslides worldwide, resulting in 479 fatalities. The number of fatal landslides is significantly above the long term mean. Yesterday, I provided an update on fatal landslides that occurred in May 2025. This post is a follow-up, providing the data for June. As always, allow me to remind you…
Fatal landslides in May 2025
In May 2025, I recorded 66 fatal landslides worldwide, resulting in 313 fatalities. The number of fatal landslides is significantly above the long term mean. Somewhat later than planned, resulting from other workload challenges, this is my latest update on fatal landslides in 2025, covering the month of May. I hope to be able to…
An update on the 21 July 2025 rock avalanche in the Matia’an valley, in Wanrong township in eastern Taiwan.
Following the passage Typhoon Podul, the lake created by this massive landslide has now grown considerably. Overtopping is expected in October, although could occur sooner if further heavy rainfall occurs. The landslide-dammed lake behind the the enormous 21 July 2025 rock avalanche in the Matia’an valley, in Wanrong township in eastern Taiwan continues to fill.…
The 7 August 2025 landslides and debris flows in Yuzhong County, Gansu Province
At least 43 people were killed in devastating landslides and debris flows in northern China. Planet Labs images provide an insight into this disaster. It is extremely challenging to keep up with the landslides occurring around the world at the moment. There has been a lot of attention paid to the remarkable rock slope failure…
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About Dave
Dave Petley is the Vice-Chancellor of the University of Hull in the United Kingdom. His blog provides commentary and analysis of landslide events occurring worldwide, including the landslides themselves, latest research, and conferences and meetings.