4.3

M4.3 Earthquake 3 km WNW of Vlycháda, GreeceMay 23, 2026

2026-05-23 22:29:48 UTC (2026-05-23) · approx. 12:29 AM UTC+2 local

MagnitudeM4.3(mb)
Time22:29 UTC12:29 AM UTC+2
Depth141.8 kmintermediate depth
Coordinates38.044°, 23.405°
Felt byNo felt reports
Status✓ Reviewed by USGS

On May 23, 2026 at 22:29 UTC, a magnitude 4.3 intermediate depth earthquake struck 3 km WNW of Vlycháda, Greece, at a depth of 141.8 km and coordinates 38.0438°, 23.4046°.

Physical scale: An earthquake of magnitude 4.3 releases seismic energy equivalent to roughly 43 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 558 m — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at 38.04°, 23.40°

Earthquake Details

Magnitude
4.3 mb
Depth
141.8 km
intermediate depth
Location
38.0438°N
23.4046°E

Technical Information

Event ID
us6000sztp
Event Type
earthquake
Status
✓ Reviewed
Significance
284
Stations Used
34
Azimuthal Gap
105.0°
Min Station Distance
1.286°
RMS Residual
0.71 sec
Last Updated
2026-06-09 05:20:07 UTC

Common Questions

How strong was the magnitude 4.3 earthquake near Vlycháda, Greece?

The magnitude 4.3 earthquake that struck 3 km WNW of Vlycháda, Greece on May 23, 2026 at 22:29 UTC had a depth of 141.8 km. For context, this was a light earthquake commonly felt near the epicenter.

Were there aftershocks?

Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.3 earthquakes can continue for several days and gradually diminish over time.

What should I do after an earthquake?

If you were in the affected area: check yourself and others for injuries, inspect your home for damage, and be prepared for aftershocks. For detailed guidance, see our earthquake safety guide and emergency planning resources.

Authoritative source: USGS event page (event ID: us6000sztp). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2026, May 23, 2026). M4.3 Earthquake 3 km WNW of Vlycháda, GreeceMay 23, 2026. Retrieved June 9, 2026 from https://www.earthquaketracker.org/earthquakes/event/us6000sztp/