4.4

M4.4 Earthquake 86 km NE of Otrada, RussiaFebruary 26, 2023

2023-02-26 18:58:55 UTC (2023-02-26) · approx. 4:58 AM UTC+10 local

MagnitudeM4.4(mb)
Time18:58 UTC4:58 AM UTC+10
Depth138.0 kmintermediate depth
Coordinates44.699°, 146.506°
Felt byNo felt reports
Status✓ Reviewed by USGS

On February 26, 2023 at 18:58 UTC, a magnitude 4.4 intermediate depth earthquake struck 86 km NE of Otrada, Russia, at a depth of 138.0 km and coordinates 44.6989°, 146.5059°.

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 44.70°, 146.51°

Earthquake Details

Magnitude
4.4 mb
Depth
138.0 km
intermediate depth
Location
44.6989°N
146.5059°E

Technical Information

Event ID
us6000jrs3
Event Type
earthquake
Status
✓ Reviewed
Significance
298
Stations Used
108
Azimuthal Gap
62.0°
Min Station Distance
2.863°
RMS Residual
0.75 sec
Last Updated
2023-05-08 01:59:35 UTC

Common Questions

How strong was the magnitude 4.4 earthquake near Otrada, Russia?

The magnitude 4.4 earthquake that struck 86 km NE of Otrada, Russia on February 26, 2023 at 18:58 UTC had a depth of 138.0 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: us6000jrs3). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2023, February 26, 2023). M4.4 Earthquake 86 km NE of Otrada, RussiaFebruary 26, 2023. Retrieved May 8, 2023 from https://www.earthquaketracker.org/earthquakes/event/us6000jrs3/