M4.9 Earthquake 26 km NE of Oía, Greece — May 12, 2025
2025-05-12 23:30:09 UTC (2025-05-12) · approx. 1:30 AM UTC+2 local
Felt by 29 people across nearby locations.
On May 12, 2025 at 23:30 UTC, a magnitude 4.9 shallow crustal earthquake struck 26 km NE of Oía, Greece, at a depth of 5.1 km and coordinates 36.6305°, 25.5890°. This earthquake was detected by 110 seismic stations with excellent location accuracy and was assigned a USGS significance rating of 383, placing it among routine seismic activity.
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.
The epicenter is located in Greece, a region characterized by the Hellenic subduction zone, where the African Plate subducts northward beneath the Aegean at roughly 35 mm per year. The nearest mapped fault system is the Hellenic Trench. View all earthquakes in Greece.
Learn more: Magnitude scale · Aftershock sequences
Did You Feel It? — community-reported shaking
Aggregated felt-report intensity from 29 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
25.5890°E
Technical Information
Common Questions
How strong was the magnitude 4.9 earthquake near Oía, Greece?
The magnitude 4.9 earthquake that struck 26 km NE of Oía, Greece on May 12, 2025 at 23:30 UTC had a depth of 5.1 km. For context, this was a light earthquake commonly felt near the epicenter.
Where did the earthquake occur?
The earthquake epicenter was located at 36.6305°, 25.5890°, which is 26 km NE of Oía, Greece. View all earthquakes in Greece.
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.
Has Greece had earthquakes this big before?
The largest recorded earthquake in Greece was the M8.5 Crete earthquake of June 29, 1303. Today's magnitude 4.9 event is significantly smaller than that historical record.
Authoritative source: USGS event page (event ID: us7000pyx9). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2025, May 12, 2025). M4.9 Earthquake 26 km NE of Oía, Greece — May 12, 2025. Retrieved July 24, 2025 from https://www.earthquaketracker.org/earthquakes/event/us7000pyx9/