4.5

M4.5 Earthquake 94 km S of Saiha, IndiaMay 11, 2023

2023-05-11 20:44:56 UTC (2023-05-11) · approx. 2:44 AM UTC+6 local

MagnitudeM4.5(mb)
Time20:44 UTC2:44 AM UTC+6
Depth51.1 kmshallow crustal
Coordinates21.654°, 93.138°
Felt byNo felt reports
Status✓ Reviewed by USGS

On May 11, 2023 at 20:44 UTC, a magnitude 4.5 shallow crustal earthquake struck 94 km S of Saiha, India, at a depth of 51.1 km and coordinates 21.6539°, 93.1376°. This earthquake was detected by 69 seismic stations with excellent location accuracy and was assigned a USGS significance rating of 312, placing it among routine seismic activity.

Physical scale: An earthquake of magnitude 4.5 releases seismic energy equivalent to roughly 85 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 767 m — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at 21.65°, 93.14°

Earthquake Details

Magnitude
4.5 mb
Depth
51.1 km
shallow crustal
Location
21.6539°N
93.1376°E

Technical Information

Event ID
us6000kb7z
Event Type
earthquake
Status
✓ Reviewed
Significance
312
Stations Used
69
Azimuthal Gap
54.0°
Min Station Distance
1.720°
RMS Residual
0.98 sec
Last Updated
2023-07-22 19:16:53 UTC

Common Questions

How strong was the magnitude 4.5 earthquake near Saiha, India?

The magnitude 4.5 earthquake that struck 94 km S of Saiha, India on May 11, 2023 at 20:44 UTC had a depth of 51.1 km. For context, this was a light earthquake commonly felt near the epicenter.

Where did the earthquake occur?

The earthquake epicenter was located at 21.6539°, 93.1376°, which is 94 km S of Saiha, India.

Were there aftershocks?

Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.5 earthquakes can continue for several days and gradually diminish over time.

Authoritative source: USGS event page (event ID: us6000kb7z). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2023, May 11, 2023). M4.5 Earthquake 94 km S of Saiha, IndiaMay 11, 2023. Retrieved July 22, 2023 from https://www.earthquaketracker.org/earthquakes/event/us6000kb7z/