M4.0 Earthquake 114 km SE of Shima, Japan — April 21, 2026
2026-04-21 00:59:08 UTC (2 days ago)
On April 21, 2026 at 00:59 UTC, a magnitude 4.0 deep-focus earthquake struck 114 km SE of Shima, Japan, at a depth of 327.3 km and coordinates 33.6435°, 137.7548°.
Earthquake Details
137.7548°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.0 earthquake near Shima, Japan?
The magnitude 4.0 earthquake that struck 114 km SE of Shima, Japan on April 21, 2026 at 00:59 UTC had a depth of 327.3 km. For context, this was a light earthquake commonly felt near the epicenter.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.0 earthquakes can continue for several days and gradually diminish over time.
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.
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Understanding This Data
Magnitude 4.0 earthquakes are often felt but rarely cause damage.