An earthquake occurred in the local area, with its epicenter located near Pematangsiantar, Indonesia. 9 and its center was 15 kilometers north-northwest of the city. The earthquake happened on August 15, with the origin time given as 10:54:51 UTC, which corresponds to 17:54:51 local time.

Further information about the earthquake is available from the USGS Earthquake Shaking Green Alert, which provides details about the event.