M 5.4 - 91 km SSE of Koshima, Japan
91 km SSE of Koshima, Japan
March 21, 2026 at 8:12 PM UTC
Seismic Data
About This Earthquake
This was a moderate earthquake registering M5.4 on the moment magnitude scale. It struck at 91 km SSE of Koshima, Japan at a depth of 25.5 km below the surface.
1 people submitted felt reports to the USGS Did You Feel It? system, indicating the earthquake was perceptible across a significant area.
The earthquake occurred on March 21, 2026 at 8:12 PM UTC. View the full USGS event page for detailed waveform data, station information, and ShakeMap products: USGS Event us6000si57.
Frequently Asked Questions
How strong was the 91 km SSE of Koshima, Japan earthquake?
This was a moderate earthquake with a magnitude of 5.4. Earthquakes of this magnitude can cause minor to moderate damage.
Where was the 91 km SSE of Koshima, Japan earthquake felt?
The earthquake occurred at 91 km SSE of Koshima, Japan at a depth of 25.5 km. A total of 1 people submitted felt reports.