4.9

M4.9 Earthquake 57 km NW of Murghob, TajikistanSeptember 17, 2021

2021-09-17 22:06:44 UTC (2021-09-17) · approx. 3:06 AM UTC+5 local

MagnitudeM4.9(mb)
Time22:06 UTC3:06 AM UTC+5
Depth110.9 kmintermediate depth
Coordinates38.497°, 73.451°
Felt byNo felt reports
Status✓ Reviewed by USGS

On September 17, 2021 at 22:06 UTC, a magnitude 4.9 intermediate depth earthquake struck 57 km NW of Murghob, Tajikistan, at a depth of 110.9 km and coordinates 38.4972°, 73.4515°.

Physical scale: An earthquake of magnitude 4.9 releases seismic energy equivalent to roughly 338 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 1.4 km — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at 38.50°, 73.45°

Earthquake Details

Magnitude
4.9 mb
Depth
110.9 km
intermediate depth
Location
38.4972°N
73.4515°E

Technical Information

Event ID
us7000fc98
Event Type
earthquake
Status
✓ Reviewed
Significance
369
Azimuthal Gap
57.0°
Min Station Distance
1.617°
RMS Residual
0.59 sec
Last Updated
2021-12-03 15:01:26 UTC

Common Questions

How strong was the magnitude 4.9 earthquake near Murghob, Tajikistan?

The magnitude 4.9 earthquake that struck 57 km NW of Murghob, Tajikistan on September 17, 2021 at 22:06 UTC had a depth of 110.9 km. For context, this was a light earthquake commonly felt near the epicenter.

Where did the earthquake occur?

The earthquake epicenter was located at 38.4972°, 73.4515°, which is 57 km NW of Murghob, Tajikistan.

Were there aftershocks?

Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.9 earthquakes can continue for several days and gradually diminish over time.

Authoritative source: USGS event page (event ID: us7000fc98). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2021, September 17, 2021). M4.9 Earthquake 57 km NW of Murghob, TajikistanSeptember 17, 2021. Retrieved December 3, 2021 from https://www.earthquaketracker.org/earthquakes/event/us7000fc98/