3.8

M3.8 Earthquake 5 km N of Grohote, CroatiaDecember 27, 2023

2023-12-27 18:56:08 UTC (2023-12-27) · approx. 7:56 PM UTC+1 local

Felt by 10 people across nearby locations.

MagnitudeM3.8(mb)
Time18:56 UTC7:56 PM UTC+1
Depth10.0 kmshallow crustal
Coordinates43.442°, 16.294°
Felt by10DYFI responses
Status✓ Reviewed by USGS

On December 27, 2023 at 18:56 UTC, a magnitude 3.8 shallow crustal earthquake struck 5 km N of Grohote, Croatia, at a depth of 10.0 km and coordinates 43.4424°, 16.2943°. This earthquake was detected by 29 seismic stations with excellent location accuracy and was assigned a USGS significance rating of 228, placing it among routine seismic activity.

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.

Map showing earthquake epicenter at 43.44°, 16.29°

Did You Feel It? — community-reported shaking

Aggregated felt-report intensity from 10 citizen responses to the USGS Did You Feel It? system. Each colored zone represents the average MMI from reports in that area.

USGS DYFI community-reported intensity map for the M3.8 earthquake near 5 km N of Grohote, Croatia

Source: U.S. Geological Survey Did You Feel It?. View on USGS · submit your own report

Earthquake Details

Magnitude
3.8 mb
Depth
10.0 km
shallow crustal
Location
43.4424°N
16.2943°E
Felt Reports
10
DYFI responses
Community Intensity
5.8
CDI from reports

Technical Information

Event ID
us6000m01b
Event Type
earthquake
Status
✓ Reviewed
Significance
228
Stations Used
29
Azimuthal Gap
38.0°
Min Station Distance
1.455°
RMS Residual
0.54 sec
Last Updated
2024-03-02 21:39:31 UTC

Common Questions

How strong was the magnitude 3.8 earthquake near Grohote, Croatia?

The magnitude 3.8 earthquake that struck 5 km N of Grohote, Croatia on December 27, 2023 at 18:56 UTC had a depth of 10.0 km. For context, this was a minor earthquake typically detected only by instruments.

Where did the earthquake occur?

The earthquake epicenter was located at 43.4424°, 16.2943°, which is 5 km N of Grohote, Croatia.

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.

Authoritative source: USGS event page (event ID: us6000m01b). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2023, December 27, 2023). M3.8 Earthquake 5 km N of Grohote, CroatiaDecember 27, 2023. Retrieved March 2, 2024 from https://www.earthquaketracker.org/earthquakes/event/us6000m01b/