4.0

M4.0 Earthquake 12 km SE of Anthiró, GreeceMarch 12, 2026

2026-03-12 18:36:02 UTC (2026-03-12) · approx. 7:36 PM UTC+1 local

MagnitudeM4.0(mb)
Time18:36 UTC7:36 PM UTC+1
Depth11.7 kmshallow crustal
Coordinates39.255°, 21.551°
Felt byNo felt reports
Status✓ Reviewed by USGS

On March 12, 2026 at 18:36 UTC, a magnitude 4.0 shallow crustal earthquake struck 12 km SE of Anthiró, Greece, at a depth of 11.7 km and coordinates 39.2555°, 21.5512°.

Physical scale: An earthquake of magnitude 4.0 releases seismic energy equivalent to roughly 15 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 347 m — a useful intuition for the size of the slip patch on the fault.

Map showing earthquake epicenter at 39.26°, 21.55°

Earthquake Details

Magnitude
4.0 mb
Depth
11.7 km
shallow crustal
Location
39.2555°N
21.5512°E

Technical Information

Event ID
us6000sfwv
Event Type
earthquake
Status
✓ Reviewed
Significance
246
Stations Used
47
Azimuthal Gap
77.0°
Min Station Distance
0.654°
RMS Residual
0.71 sec
Last Updated
2026-03-27 18:18:03 UTC

Common Questions

How strong was the magnitude 4.0 earthquake near Anthiró, Greece?

The magnitude 4.0 earthquake that struck 12 km SE of Anthiró, Greece on March 12, 2026 at 18:36 UTC had a depth of 11.7 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 4.0 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: us6000sfwv). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2026, March 12, 2026). M4.0 Earthquake 12 km SE of Anthiró, GreeceMarch 12, 2026. Retrieved May 21, 2026 from https://www.earthquaketracker.org/earthquakes/event/us6000sfwv/