4.5

M4.5 Earthquake 3 km S of Kemigawa, JapanApril 23, 2026

2026-04-23 14:53:17 UTC (8 hours ago)

Felt by 3 people across nearby locations.

On April 23, 2026 at 14:53 UTC, a magnitude 4.5 intermediate depth earthquake struck 3 km S of Kemigawa, Japan, at a depth of 80.2 km and coordinates 35.6218°, 140.0662°. This earthquake was detected by 50 seismic stations with good location accuracy and was assigned a USGS significance rating of 312, 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

Map showing earthquake epicenter at 35.62°, 140.07°

Earthquake Details

Magnitude
4.5 mb
Depth
80.2 km
intermediate depth
Location
35.6218°N
140.0662°E
Felt Reports
3
DYFI responses
Community Intensity
2.3
CDI from reports

Technical Information

Event ID
us6000sscv
Event Type
earthquake
Status
✓ Reviewed
Significance
312
Stations Used
50
Azimuthal Gap
134.0°
Min Station Distance
1.762°
RMS Residual
0.71 sec
Last Updated
2026-04-23 18:20:54 UTC

Common Questions

How strong was the magnitude 4.5 earthquake near Kemigawa, Japan?

The magnitude 4.5 earthquake that struck 3 km S of Kemigawa, Japan on April 23, 2026 at 14:53 UTC had a depth of 80.2 km. For context, this was a light earthquake commonly felt near the epicenter.

Where did the earthquake occur?

The earthquake epicenter was located at 35.6218°, 140.0662°, which is 3 km S of Kemigawa, Japan. View all earthquakes in Japan.

Were there aftershocks?

Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.5 earthquakes can continue for several days 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 4.5 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.