M3.8 Earthquake 7 km WNW of Petrinja, Croatia — January 10, 2021
2021-01-10 23:28:01 UTC (2021-01-10) · approx. 12:28 AM UTC+1 local
On January 10, 2021 at 23:28 UTC, a magnitude 3.8 shallow crustal earthquake struck 7 km WNW of Petrinja, Croatia, at a depth of 9.6 km and coordinates 45.4703°, 16.2109°.
Physical scale: An earthquake of magnitude 3.8 releases seismic energy equivalent to roughly 7.6 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 252 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 7 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
16.2109°E
Technical Information
Common Questions
How strong was the magnitude 3.8 earthquake near Petrinja, Croatia?
The magnitude 3.8 earthquake that struck 7 km WNW of Petrinja, Croatia on January 10, 2021 at 23:28 UTC had a depth of 9.6 km. For context, this was a minor earthquake typically detected only by instruments.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 3.8 earthquakes can continue for several days and gradually diminish over time.
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Understanding This Data
Magnitude 3.8 earthquakes are typically only recorded by instruments.
Authoritative source: USGS event page (event ID: us6000d7bt). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2021, January 10, 2021). M3.8 Earthquake 7 km WNW of Petrinja, Croatia — January 10, 2021. Retrieved January 4, 2022 from https://www.earthquaketracker.org/earthquakes/event/us6000d7bt/