19 April 2022
Planet image of the Kantagnos village landslide in the Philippines
My friends at Planet have very kindly acquired a high resolution satellite image of the Kantagnos landslide in the Philippines, which occurred during Tropical Storm Megi / Agaton on 11 April 2022. This image, which shows most of the the landslide, was captured on 17 April 2022 at 22:15 UT. This is the image:-
The main source of the landslide is in the cloud to the northeast of the image. As I noted previously, there is another substantial source that is visible. The flow has passed through a comparatively narrow gap and then spread. Note that there is very little evidence of landslide debris, implying a very mobile, fluid flow that has been removed by the river, which of course would have been in flood at the time of the failure.
For comparison, this is a Google Earth image of the same site ( I have included the location for reference), dated 20 April 2019:-
The latest NDRRMC report lists 50 known fatalities at Kantagnos, with 93 people listed as missing. The total death toll from Tropical Storm Megi is now 175 people, with a further 110 people missing. The vast majority of the deaths occurred in landslides. Remarkably, an 11 year old boy survived the Kantagnos village in a refrigerator, but tragically his parents and a sibling were killed.
The impact of the landslide can be made clear by examining the inhabited area near to the river. This is the site in 2019:-
And this is the site from the Planet image:-
Hope fully, below you will see a slide comparison of the two images:-
It is clear that multiple houses have been destroyed in the landslide, as well as a substantial area of agricultural land.
Planet Team (2022). Planet Application Program Interface: In Space for Life on Earth. San Francisco, CA. https://www.planet.com/
Many thanks in particular to Rob Simmon of Planet for providing the image. Simply amazing.