M4.9 Earthquake 6 km ESE of Masally, Azerbaijan — August 22, 2023
2023-08-22 21:23:57 UTC (2023-08-22) · approx. 12:23 AM UTC+3 local
Felt by 13 people across nearby locations.
On August 22, 2023 at 21:23 UTC, a magnitude 4.9 shallow crustal earthquake struck 6 km ESE of Masally, Azerbaijan, at a depth of 54.6 km and coordinates 39.0206°, 48.7354°. This earthquake was detected by 100 seismic stations with excellent location accuracy and was assigned a USGS significance rating of 376, 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 13 citizen responses 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
48.7354°E
Technical Information
Common Questions
How strong was the magnitude 4.9 earthquake near Masally, Azerbaijan?
The magnitude 4.9 earthquake that struck 6 km ESE of Masally, Azerbaijan on August 22, 2023 at 21:23 UTC had a depth of 54.6 km. For context, this was a light earthquake commonly felt near the epicenter.
Where did the earthquake occur?
The earthquake epicenter was located at 39.0206°, 48.7354°, which is 6 km ESE of Masally, Azerbaijan.
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: us7000kq79). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2023, August 22, 2023). M4.9 Earthquake 6 km ESE of Masally, Azerbaijan — August 22, 2023. Retrieved October 28, 2023 from https://www.earthquaketracker.org/earthquakes/event/us7000kq79/