M4.2 Earthquake 144 km WNW of Naha, Japan — July 16, 2022
2022-07-16 23:46:38 UTC (2022-07-16) · approx. 7:46 AM UTC+8 local
On July 16, 2022 at 23:46 UTC, a magnitude 4.2 shallow crustal earthquake struck 144 km WNW of Naha, Japan, at a depth of 9.4 km and coordinates 26.8211°, 126.3933°.
Physical scale: An earthquake of magnitude 4.2 releases seismic energy equivalent to roughly 30 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 476 m — a useful intuition for the size of the slip patch on the fault.
Earthquake Details
126.3933°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 4.2 earthquake near Naha, Japan?
The magnitude 4.2 earthquake that struck 144 km WNW of Naha, Japan on July 16, 2022 at 23:46 UTC had a depth of 9.4 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 4.2 earthquakes can continue for several days and gradually diminish over time.
Actions
Location
Understanding This Data
Magnitude 4.2 earthquakes are often felt but rarely cause damage.
Authoritative source: USGS event page (event ID: us7000htd4). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2022, July 16, 2022). M4.2 Earthquake 144 km WNW of Naha, Japan — July 16, 2022. Retrieved September 27, 2022 from https://www.earthquaketracker.org/earthquakes/event/us7000htd4/