4.4

M4.4 Earthquake 82 km SW of Yonakuni, JapanAugust 2, 2022

2022-08-02 21:44:36 UTC (2022-08-02) · approx. 5:44 AM UTC+8 local

MagnitudeM4.4(mb)
Time21:44 UTC5:44 AM UTC+8
Depth20.2 kmshallow crustal
Coordinates23.893°, 122.482°
Felt byNo felt reports
Status✓ Reviewed by USGS

On August 2, 2022 at 21:44 UTC, a magnitude 4.4 shallow crustal earthquake struck 82 km SW of Yonakuni, Japan, at a depth of 20.2 km and coordinates 23.8931°, 122.4817°.

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 23.89°, 122.48°

Earthquake Details

Magnitude
4.4 mb
Depth
20.2 km
shallow crustal
Location
23.8931°N
122.4817°E

Technical Information

Event ID
us6000i7km
Event Type
earthquake
Status
✓ Reviewed
Significance
298
Stations Used
40
Azimuthal Gap
170.0°
Min Station Distance
0.749°
RMS Residual
0.49 sec
Last Updated
2022-10-12 14:50:05 UTC

Common Questions

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

The magnitude 4.4 earthquake that struck 82 km SW of Yonakuni, Japan on August 2, 2022 at 21:44 UTC had a depth of 20.2 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: us6000i7km). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2022, August 2, 2022). M4.4 Earthquake 82 km SW of Yonakuni, JapanAugust 2, 2022. Retrieved October 12, 2022 from https://www.earthquaketracker.org/earthquakes/event/us6000i7km/