M4.9 Earthquake 34 km E of Hoemul-li, North Korea — September 6, 2023
2023-09-06 15:52:16 UTC (2023-09-06) · approx. 12:52 AM UTC+9 local
Felt by 1 person across nearby locations.
On September 6, 2023 at 15:52 UTC, a magnitude 4.9 deep-focus earthquake struck 34 km E of Hoemul-li, North Korea, at a depth of 644.9 km and coordinates 41.4904°, 130.0784°. This earthquake was detected by 181 seismic stations with excellent location accuracy and was assigned a USGS significance rating of 370, placing it among routine seismic activity.
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.
Did You Feel It? — community-reported shaking
Aggregated felt-report intensity from 1 citizen response to the USGS Did You Feel It? system. Each colored zone represents the average MMI from reports in that area.
Source: U.S. Geological Survey Did You Feel It?. View on USGS · submit your own report
Earthquake Details
130.0784°E
Technical Information
Common Questions
How strong was the magnitude 4.9 earthquake near Hoemul-li, North Korea?
The magnitude 4.9 earthquake that struck 34 km E of Hoemul-li, North Korea on September 6, 2023 at 15:52 UTC had a depth of 644.9 km. For context, this was a light earthquake commonly felt near the epicenter.
Where did the earthquake occur?
The earthquake epicenter was located at 41.4904°, 130.0784°, which is 34 km E of Hoemul-li, North Korea.
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: us7000ktnn). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, September 6, 2023). M4.9 Earthquake 34 km E of Hoemul-li, North Korea — September 6, 2023. Retrieved November 17, 2023 from https://www.earthquaketracker.org/earthquakes/event/us7000ktnn/