4.6

M4.6 Earthquake 18 km SW of Amorgós, GreeceJuly 9, 2025

2025-07-09 22:54:07 UTC (2025-07-09) · approx. 12:54 AM UTC+2 local

Felt by 14 people across nearby locations.

MagnitudeM4.6(mww)
Time22:54 UTC12:54 AM UTC+2
Depth10.0 kmshallow crustal
Coordinates36.723°, 25.741°
Felt by14DYFI responses
Status✓ Reviewed by USGS

On July 9, 2025 at 22:54 UTC, a magnitude 4.6 shallow crustal earthquake struck 18 km SW of Amorgós, Greece, at a depth of 10.0 km and coordinates 36.7230°, 25.7412°. This earthquake was detected by 82 seismic stations with excellent location accuracy and was assigned a USGS significance rating of 335, placing it among routine seismic activity.

Physical scale: An earthquake of magnitude 4.6 releases seismic energy equivalent to roughly 120 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 899 m — 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

Map showing earthquake epicenter at 36.72°, 25.74°

Did You Feel It? — community-reported shaking

Aggregated felt-report intensity from 14 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 M4.6 earthquake near 18 km SW of Amorgós, Greece

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

Earthquake Details

Magnitude
4.6 mww
Depth
10.0 km
shallow crustal
Location
36.7230°N
25.7412°E
Felt Reports
14
DYFI responses
Community Intensity
6.5
CDI from reports

Technical Information

Event ID
us7000qbpg
Event Type
earthquake
Status
✓ Reviewed
Significance
335
Stations Used
82
Azimuthal Gap
56.0°
Min Station Distance
1.643°
RMS Residual
0.72 sec
Last Updated
2025-09-20 22:27:51 UTC

Common Questions

How strong was the magnitude 4.6 earthquake near Amorgós, Greece?

The magnitude 4.6 earthquake that struck 18 km SW of Amorgós, Greece on July 9, 2025 at 22:54 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 36.7230°, 25.7412°, which is 18 km SW of Amorgós, Greece. View all earthquakes in Greece.

Were there aftershocks?

Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 4.6 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 4.6 event is significantly smaller than that historical record.

Authoritative source: USGS event page (event ID: us7000qbpg). All scientific values on this page are sourced verbatim from the USGS feed.

Cite this page: EarthquakeTracker.org. (2025, July 9, 2025). M4.6 Earthquake 18 km SW of Amorgós, GreeceJuly 9, 2025. Retrieved September 20, 2025 from https://www.earthquaketracker.org/earthquakes/event/us7000qbpg/