M4.9 Earthquake 6 km SW of Petrinja, Croatia — December 29, 2020
2020-12-29 11:23:46 UTC (2020-12-29) · approx. 12:23 PM UTC+1 local
Felt by 25 people across nearby locations.
On December 29, 2020 at 11:23 UTC, a magnitude 4.9 shallow crustal earthquake struck 6 km SW of Petrinja, Croatia, at a depth of 10.0 km and coordinates 45.3879°, 16.2421°.
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 25 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
16.2421°E
Technical Information
Common Questions
How strong was the magnitude 4.9 earthquake near Petrinja, Croatia?
The magnitude 4.9 earthquake that struck 6 km SW of Petrinja, Croatia on December 29, 2020 at 11:23 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 45.3879°, 16.2421°, which is 6 km SW of Petrinja, Croatia.
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: us6000d6ft). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2020, December 29, 2020). M4.9 Earthquake 6 km SW of Petrinja, Croatia — December 29, 2020. Retrieved March 6, 2021 from https://www.earthquaketracker.org/earthquakes/event/us6000d6ft/