4.4

M4.4 Earthquake 14 km SW of ?funato, JapanMarch 23, 2022

2022-03-23 23:50:52 UTC (2022-03-23) · approx. 8:50 AM UTC+9 local

MagnitudeM4.4(mb)
Time23:50 UTC8:50 AM UTC+9
Depth80.0 kmintermediate depth
Coordinates38.990°, 141.583°
Felt byNo felt reports
Status✓ Reviewed by USGS

On March 23, 2022 at 23:50 UTC, a magnitude 4.4 intermediate depth earthquake struck 14 km SW of ?funato, Japan, at a depth of 80.0 km and coordinates 38.9903°, 141.5830°.

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 38.99°, 141.58°

Earthquake Details

Magnitude
4.4 mb
Depth
80.0 km
intermediate depth
Location
38.9903°N
141.5830°E

Technical Information

Event ID
us7000gwqg
Event Type
earthquake
Status
✓ Reviewed
Significance
298
Azimuthal Gap
139.0°
Min Station Distance
1.840°
RMS Residual
0.73 sec
Last Updated
2022-05-28 18:35:28 UTC

Common Questions

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

The magnitude 4.4 earthquake that struck 14 km SW of ?funato, Japan on March 23, 2022 at 23:50 UTC had a depth of 80.0 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: us7000gwqg). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2022, March 23, 2022). M4.4 Earthquake 14 km SW of ?funato, JapanMarch 23, 2022. Retrieved May 28, 2022 from https://www.earthquaketracker.org/earthquakes/event/us7000gwqg/