M4.6 Earthquake 6 km NW of Petrinja, Croatia — August 16, 2021
2021-08-16 23:58:56 UTC (2021-08-16) · approx. 12:58 AM UTC+1 local
Felt by 44 people across nearby locations.
On August 16, 2021 at 23:58 UTC, a magnitude 4.6 shallow crustal earthquake struck 6 km NW of Petrinja, Croatia, at a depth of 10.0 km and coordinates 45.4755°, 16.2341°.
Physical scale: An earthquake of magnitude 4.6 releases seismic energy equivalent to roughly 120 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 899 m — 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 44 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
16.2341°E
Technical Information
Common Questions
How strong was the magnitude 4.6 earthquake near Petrinja, Croatia?
The magnitude 4.6 earthquake that struck 6 km NW of Petrinja, Croatia on August 16, 2021 at 23:58 UTC had a depth of 10.0 km. For context, this was a light earthquake commonly felt near the epicenter.
Where did the earthquake occur?
The earthquake epicenter was located at 45.4755°, 16.2341°, which is 6 km NW of Petrinja, Croatia.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.6 earthquakes can continue for several days and gradually diminish over time.
Authoritative source: USGS event page (event ID: us6000f7dp). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2021, August 16, 2021). M4.6 Earthquake 6 km NW of Petrinja, Croatia — August 16, 2021. Retrieved October 29, 2021 from https://www.earthquaketracker.org/earthquakes/event/us6000f7dp/