Landslides Triggered by the 2020 Puerto Rico Earthquake Sequence

Science Center Objects

A magnitude 6.4 earthquake occurred near Barrio Indios, Guayanilla, Puerto Rico on January 7, 2020. A study of the triggered landslides is ongoing.

Excerpt of satellite image showing landslide impacts to PR-357 near the Rio Rosario in the Maricao Municipality

Excerpt of satellite image showing landslide impacts to PR-357 near the Río Rosario in the Maricao Municipality. Points identify the approximate road locations visibly impacted by landslides. Image filename contains approximate latitude and longitude of impact location. (Public domain.)

Additional data and publications will be posted here as they become available.

An inventory of remotely and field-observed landslides triggered by 2019-2020 Puerto Rico earthquake sequence. The inventory was mapped using pre- and post-event satellite imagery (PR_landslide_inventory_imagery.csv), an extensive collection of field observations ( and using pre-earthquake lidar as guidance for mapping polygons with more precise locations and geometries (2015 - 2017 USGS Lidar DEM: Puerto Rico dataset).

This dataset consists of over 800 field observations of ground failure and other damage related to the 2019-2020 Puerto Rico earthquake sequence, and primarily triggered by the M6.4 mainshock on 7 January 2020. Observations were primarily collected from 12-18 January 2020, but data collection extended through the end of February 2020. Many observations are accompanied by text descriptions made during the field work by the observer. The location of the majority of the points represents the location of the observer/photographer because the coordinates come from geotagged photos and waypoints (unless otherwise noted).