A new paper (Jia et al. 2026) has found that the 8 February 2025 Junlian rock avalanche was caused by progressive weakening of the rock mass through wetting and drying cycles. On 8 February 2025, the major Junlian rock avalanche landslide occurred at Jinping Village in Sichuan Province, China. A paper (Jia et al. 2026) […]
East Asia
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Landslides triggered by Typhoon Doksuri in northern China in July 2023
New research indicates that over 100,000 landslides were triggered by a single rainstorm. Back in July 2023, the remnants of Typhoon Doksuri swept across northern China, bringing exceptional rainfall. I briefly covered this at the time, but there was a lack of clear information about the impacts. A technical note has been published in the […]
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Satellite imagery of the 11 November 2025 landslide at Hongqi Bridge in China
The Landslide Blog is written by Dave Petley, who is widely recognized as a world leader in the study and management of landslides. Satellite company Blacksky has released a high resolution satellite image, captured on 12 November 2025, showing the aftermath of the 11 November 2025 landslide at Hongqi Bridge in China. The image was […]
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The 22 May 2025 Qingyang landslide in Guizhou Province, China
A c1.4 million cubic metre landslide, triggered by intense rainfall, killed 19 people. On 22 May 2025, the large Qingyang landslide occurred in Dafang County, Guizhou Province, China. This landslide was widely reported to have “trapped” 19 people. In a paper in the journal Landslides, Wen et al. (2025) provide an initial but very helpful […]
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Another landslide dam flood at the site of the Matai’an rock avalanche in Taiwan
Failure of the landslide debris from the Matai’an rock avalanche allowed another barrier lake to form. This breached on 21 October 2025, generating another damaging debris flow. Newspapers in Taiwan are reporting that a new landslide barrier lake formed and then failed at the site of the giant Matai’an rock avalanche. The breach event apparently […]
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The evolution of the Matai’an landslide dam
Some excellent before and after imagery is now available showing the evolution of the Matai’an landslide dam. The active GIS/spatial analysis community in Taiwan has produced some fascinating analysis of the Matai’an landslide. Much of this has been posted to Facebook (which is not my favourite platform, but sometimes you have to go where the […]
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The aftermath of the Matai’an landslide and dam breach in Taiwan
Good digital data is now being published that presents the scale of landscape change that occurred as a result of the Matai’an landslide hazard cascade. There is also interesting information about the root causes of the vulnerability of the town of Guangfu, where the fatalities occurred. Some interesting information is now emerging about the Matai’an […]
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The aftermath of the Matai’an landslide in Taiwan
It is likely that the final death toll from the collapse of the Matai’an landslide dam will be 25 people. The dust is literally settling in the aftermath of the breach of the Matai’an landslide dam in Taiwan. The current estimates for the loss are life are 18 fatalities with seven more missing, and a […]
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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 […]
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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. […]