4.5

M4.5 Earthquake 57 km E of Khorugh, TajikistanDecember 8, 2023

2023-12-08 23:30:14 UTC (2023-12-08) · approx. 4:30 AM UTC+5 local

MagnitudeM4.5(mb)
Time23:30 UTC4:30 AM UTC+5
Depth198.7 kmintermediate depth
Coordinates37.493°, 72.205°
Felt byNo felt reports
Status✓ Reviewed by USGS

On December 8, 2023 at 23:30 UTC, a magnitude 4.5 intermediate depth earthquake struck 57 km E of Khorugh, Tajikistan, at a depth of 198.7 km and coordinates 37.4934°, 72.2049°. This earthquake was detected by 38 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 37.49°, 72.20°

Earthquake Details

Magnitude
4.5 mb
Depth
198.7 km
intermediate depth
Location
37.4934°N
72.2049°E

Technical Information

Event ID
us7000lhml
Event Type
earthquake
Status
✓ Reviewed
Significance
312
Stations Used
38
Azimuthal Gap
57.0°
Min Station Distance
2.007°
RMS Residual
0.39 sec
Last Updated
2024-02-10 23:47:44 UTC

Common Questions

How strong was the magnitude 4.5 earthquake near Khorugh, Tajikistan?

The magnitude 4.5 earthquake that struck 57 km E of Khorugh, Tajikistan on December 8, 2023 at 23:30 UTC had a depth of 198.7 km. For context, this was a light earthquake commonly felt near the epicenter.

Where did the earthquake occur?

The earthquake epicenter was located at 37.4934°, 72.2049°, which is 57 km E of Khorugh, Tajikistan.

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: us7000lhml). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2023, December 8, 2023). M4.5 Earthquake 57 km E of Khorugh, TajikistanDecember 8, 2023. Retrieved February 10, 2024 from https://www.earthquaketracker.org/earthquakes/event/us7000lhml/