M5.0 Earthquake 56 km SSE of Ýdra, Greece — August 17, 2020
2020-08-17 07:27:02 UTC (2020-08-17) · approx. 9:27 AM UTC+2 local
Felt by 6 people across nearby locations.
On August 17, 2020 at 07:27 UTC, a magnitude 5.0 intermediate depth earthquake struck 56 km SSE of Ýdra, Greece, at a depth of 95.3 km and coordinates 36.8978°, 23.7700°.
Physical scale: An earthquake of magnitude 5.0 releases seismic energy equivalent to roughly 477 metric tons of TNT. Empirical fault-scaling laws (Wells & Coppersmith, 1994) estimate the subsurface rupture length at approximately 1.7 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 6 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
23.7700°E
Technical Information
Nearby Earthquakes (Last 7 Days)
Common Questions
How strong was the magnitude 5.0 earthquake near Ýdra, Greece?
The magnitude 5.0 earthquake that struck 56 km SSE of Ýdra, Greece on August 17, 2020 at 07:27 UTC had a depth of 95.3 km. For context, this was a moderate earthquake that could be widely felt.
Where did the earthquake occur?
The earthquake epicenter was located at 36.8978°, 23.7700°, which is 56 km SSE of Ýdra, Greece. View all earthquakes in Greece.
Were there aftershocks?
Aftershock activity is monitored continuously by the USGS. Aftershock sequences from magnitude 5.0 earthquakes can continue for days to weeks 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 5.0 event is significantly smaller than that historical record.
Authoritative source: USGS event page (event ID: us6000bfuq). All scientific values on this page are sourced verbatim from the USGS feed.
Cite this page: EarthquakeTracker.org. (2020, August 17, 2020). M5.0 Earthquake 56 km SSE of Ýdra, Greece — August 17, 2020. Retrieved December 22, 2025 from https://www.earthquaketracker.org/earthquakes/event/us6000bfuq/