4.4

M4.4 Earthquake 82 km E of Taira, JapanApril 26, 2023

2023-04-26 18:30:35 UTC (2023-04-26) · approx. 3:30 AM UTC+9 local

MagnitudeM4.4(mb)
Time18:30 UTC3:30 AM UTC+9
Depth18.4 kmshallow crustal
Coordinates26.549°, 128.974°
Felt byNo felt reports
Status✓ Reviewed by USGS

On April 26, 2023 at 18:30 UTC, a magnitude 4.4 shallow crustal earthquake struck 82 km E of Taira, Japan, at a depth of 18.4 km and coordinates 26.5494°, 128.9741°.

Physical scale: An earthquake of magnitude 4.4 releases seismic energy equivalent to roughly 60 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 655 m — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at 26.55°, 128.97°

Earthquake Details

Magnitude
4.4 mb
Depth
18.4 km
shallow crustal
Location
26.5494°N
128.9741°E

Technical Information

Event ID
us7000jxrq
Event Type
earthquake
Status
✓ Reviewed
Significance
298
Stations Used
65
Azimuthal Gap
72.0°
Min Station Distance
0.690°
RMS Residual
0.96 sec
Last Updated
2023-07-11 01:45:03 UTC

Common Questions

How strong was the magnitude 4.4 earthquake near Taira, Japan?

The magnitude 4.4 earthquake that struck 82 km E of Taira, Japan on April 26, 2023 at 18:30 UTC had a depth of 18.4 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 4.4 earthquakes can continue for several days and gradually diminish over time.

Understanding This Data

Magnitude 4.4 earthquakes are often felt but rarely cause damage.

Learn more about magnitude →

Authoritative source: USGS event page (event ID: us7000jxrq). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2023, April 26, 2023). M4.4 Earthquake 82 km E of Taira, JapanApril 26, 2023. Retrieved July 11, 2023 from https://www.earthquaketracker.org/earthquakes/event/us7000jxrq/