Magnitude 5.5 earthquake — Hasaki, Japan
A magnitude 5.5 earthquake struck near Hasaki, Japan at a depth of about 32 km. Details, shaking intensity and any tsunami information are on the USGS event page.
Explained simply
Hasaki is a coastal area in Ibaraki Prefecture, east of Tokyo, on Japan’s Pacific coast. Japan lies where several of the Earth’s tectonic plates meet, making earthquakes common.
The depth of an earthquake and its distance from populated areas can affect how strongly people feel it. Japan monitors earthquakes for possible tsunami risk, as undersea movement can sometimes displace seawater.