4.4

M4.4 Earthquake 55 km ESE of Ōfunato, JapanJuly 27, 2024

2024-07-27 22:08:08 UTC (2024-07-27) · approx. 7:08 AM UTC+9 local

MagnitudeM4.4(mb)
Time22:08 UTC7:08 AM UTC+9
Depth45.3 kmshallow crustal
Coordinates38.809°, 142.261°
Felt byNo felt reports
Status✓ Reviewed by USGS

On July 27, 2024 at 22:08 UTC, a magnitude 4.4 shallow crustal earthquake struck 55 km ESE of Ōfunato, Japan, at a depth of 45.3 km and coordinates 38.8088°, 142.2614°.

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 38.81°, 142.26°

Earthquake Details

Magnitude
4.4 mb
Depth
45.3 km
shallow crustal
Location
38.8088°N
142.2614°E

Technical Information

Event ID
us6000njn1
Event Type
earthquake
Status
✓ Reviewed
Significance
298
Stations Used
36
Azimuthal Gap
151.0°
Min Station Distance
3.275°
RMS Residual
0.68 sec
Last Updated
2024-10-08 21:49:15 UTC

Common Questions

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

The magnitude 4.4 earthquake that struck 55 km ESE of Ōfunato, Japan on July 27, 2024 at 22:08 UTC had a depth of 45.3 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: us6000njn1). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2024, July 27, 2024). M4.4 Earthquake 55 km ESE of Ōfunato, JapanJuly 27, 2024. Retrieved October 8, 2024 from https://www.earthquaketracker.org/earthquakes/event/us6000njn1/