4.3

M4.3 Earthquake 180 km SSE of Kadzhi-Say, Kyrgyzstan — October 31, 2020

2020-10-31 21:28:47 UTC (2020-10-31) · approx. 2:28 AM UTC+5 local

MagnitudeM4.3(mb)
Time21:28 UTC≈ 2:28 AM UTC+5
Depth13.1 kmshallow crustal
Coordinates40.623°, 77.943°
Felt byNo felt reports
Status✓ Reviewed by USGS

On October 31, 2020 at 21:28 UTC, a magnitude 4.3 shallow crustal earthquake struck 180 km SSE of Kadzhi-Say, Kyrgyzstan, at a depth of 13.1 km and coordinates 40.6235°, 77.9427°.

Physical scale: An earthquake of magnitude 4.3 releases seismic energy equivalent to roughly 43 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 558 m — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at 40.62°, 77.94°

Earthquake Details

Magnitude
4.3 mb
Depth
13.1 km
shallow crustal
Location
40.6235°N
77.9427°E

Technical Information

Event ID
us7000c8rp
Event Type
earthquake
Status
✓ Reviewed
Significance
284
Azimuthal Gap
66.0°
Min Station Distance
1.109°
RMS Residual
0.74 sec
Last Updated
2021-01-18 23:01:54 UTC

Common Questions

How strong was the magnitude 4.3 earthquake near Kadzhi-Say, Kyrgyzstan?

The magnitude 4.3 earthquake that struck 180 km SSE of Kadzhi-Say, Kyrgyzstan on October 31, 2020 at 21:28 UTC had a depth of 13.1 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 4.3 earthquakes can continue for several days and gradually diminish over time.

Understanding This Data

Magnitude 4.3 earthquakes are often felt but rarely cause damage.

Learn more about magnitude →

Authoritative source: USGS event page (event ID: us7000c8rp). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2020, October 31, 2020). M4.3 Earthquake 180 km SSE of Kadzhi-Say, Kyrgyzstan — October 31, 2020. Retrieved January 18, 2021 from https://www.earthquaketracker.org/earthquakes/event/us7000c8rp/