4.1

M4.1 Earthquake 29 km E of Nishinoomote, JapanJuly 16, 2026

2026-07-16 22:24:07 UTC (2026-07-16) · approx. 7:24 AM UTC+9 local

MagnitudeM4.1(mb)
Time22:24 UTC7:24 AM UTC+9
Depth45.4 kmshallow crustal
Coordinates30.724°, 131.304°
Felt byNo felt reports
Status✓ Reviewed by USGS

On July 16, 2026 at 22:24 UTC, a magnitude 4.1 shallow crustal earthquake struck 29 km E of Nishinoomote, Japan, at a depth of 45.4 km and coordinates 30.7245°, 131.3042°.

Physical scale: An earthquake of magnitude 4.1 releases seismic energy equivalent to roughly 21 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 406 m — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at 30.72°, 131.30°

Earthquake Details

Magnitude
4.1 mb
Depth
45.4 km
shallow crustal
Location
30.7245°N
131.3042°E

Technical Information

Event ID
us7000t29b
Event Type
earthquake
Status
✓ Reviewed
Significance
259
Stations Used
18
Azimuthal Gap
131.0°
Min Station Distance
1.070°
RMS Residual
0.27 sec
Last Updated
2026-08-02 03:33:58 UTC

Common Questions

How strong was the magnitude 4.1 earthquake near Nishinoomote, Japan?

The magnitude 4.1 earthquake that struck 29 km E of Nishinoomote, Japan on July 16, 2026 at 22:24 UTC had a depth of 45.4 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 4.1 earthquakes can continue for several days and gradually diminish over time.

Understanding This Data

Magnitude 4.1 earthquakes are often felt but rarely cause damage.

Learn more about magnitude →

Authoritative source: USGS event page (event ID: us7000t29b). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2026, July 16, 2026). M4.1 Earthquake 29 km E of Nishinoomote, JapanJuly 16, 2026. Retrieved August 2, 2026 from https://www.earthquaketracker.org/earthquakes/event/us7000t29b/