M5.0 Earthquake 255 km SE of Katsuura, Japan — April 16, 2026
2026-04-16 14:43:15 UTC (3 days ago)
On April 16, 2026 at 14:43 UTC, a magnitude 5.0 shallow crustal earthquake struck 255 km SE of Katsuura, Japan, at a depth of 66.8 km and coordinates 33.4772°, 142.2250°. This earthquake was detected by 40 seismic stations with good location accuracy and was assigned a USGS significance rating of 385, placing it among routine seismic activity.
The epicenter is located in Japan, a region characterized by the intersection of four tectonic plates — Pacific, Philippine Sea, Eurasian, and North American — creating multiple subduction zones. The nearest mapped fault system is the Japan Trench. View all earthquakes in Japan.
Learn more: Magnitude scale · Aftershock sequences
Earthquake Details
142.2250°E
Technical Information
Common Questions
How strong was the magnitude 5.0 earthquake near Katsuura, Japan?
The magnitude 5.0 earthquake that struck 255 km SE of Katsuura, Japan on April 16, 2026 at 14:43 UTC had a depth of 66.8 km. For context, this was a moderate earthquake that could be widely felt.
Where did the earthquake occur?
The earthquake epicenter was located at 33.4772°, 142.2250°, which is 255 km SE of Katsuura, Japan. View all earthquakes in Japan.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 5.0 earthquakes can continue for days to weeks and gradually diminish over time.
Has Japan had earthquakes this big before?
The largest recorded earthquake in Japan was the M9.1 Tohoku earthquake of March 11, 2011. Today's magnitude 5.0 event is significantly smaller than that historical record.
What should I do after an earthquake?
If you were in the affected area: check yourself and others for injuries, inspect your home for damage, and be prepared for aftershocks. For detailed guidance, see our earthquake safety guide and emergency planning resources.