4.8

M4.8 Earthquake 19 km W of Saiha, IndiaOctober 19, 2021

2021-10-19 00:44:09 UTC (2021-10-19) · approx. 6:44 AM UTC+6 local

MagnitudeM4.8(mb)
Time00:44 UTC6:44 AM UTC+6
Depth35.0 kmshallow crustal
Coordinates22.526°, 92.791°
Felt byNo felt reports
Status✓ Reviewed by USGS

On October 19, 2021 at 00:44 UTC, a magnitude 4.8 shallow crustal earthquake struck 19 km W of Saiha, India, at a depth of 35.0 km and coordinates 22.5257°, 92.7906°.

Physical scale: An earthquake of magnitude 4.8 releases seismic energy equivalent to roughly 239 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 1.2 km — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at 22.53°, 92.79°

Earthquake Details

Magnitude
4.8 mb
Depth
35.0 km
shallow crustal
Location
22.5257°N
92.7906°E

Technical Information

Event ID
us6000fwrl
Event Type
earthquake
Status
✓ Reviewed
Significance
354
Azimuthal Gap
121.0°
Min Station Distance
0.756°
RMS Residual
0.73 sec
Last Updated
2021-12-25 22:58:59 UTC

Common Questions

How strong was the magnitude 4.8 earthquake near Saiha, India?

The magnitude 4.8 earthquake that struck 19 km W of Saiha, India on October 19, 2021 at 00:44 UTC had a depth of 35.0 km. For context, this was a light earthquake commonly felt near the epicenter.

Where did the earthquake occur?

The earthquake epicenter was located at 22.5257°, 92.7906°, which is 19 km W of Saiha, India.

Were there aftershocks?

Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.8 earthquakes can continue for several days and gradually diminish over time.

Authoritative source: USGS event page (event ID: us6000fwrl). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2021, October 19, 2021). M4.8 Earthquake 19 km W of Saiha, IndiaOctober 19, 2021. Retrieved December 25, 2021 from https://www.earthquaketracker.org/earthquakes/event/us6000fwrl/