Attica, Greece · within 250 km
Earthquakes near Piraeus
In the last 30 days, 9 earthquakes of magnitude 2.5 or greater were recorded within 250 km of Piraeus; the largest was a magnitude 4.9 earthquake 20 km SE of Zakynthos, Ionian Islands, Greece on 25 Oct 2026.
Data: GFZ, USGS, INGV · updated · sources and licences
- 24 hours
- 0
- all magnitudes
- 7 days
- 1
- M2.5+
- 30 days
- 9
- M2.5+
Seismic record
Within 250 km of Piraeus, the USGS catalogue lists 63 earthquakes of magnitude 6 or more since 1900 and 106 of magnitude 5 or more since 2000, about 4 a year. In the 12 months to 13 Oct 2026 it recorded 67 of magnitude 2.5 or more, all of them magnitude 4 or more.
The largest since 1900: M7.9 on 11 Aug 1903, 57 km S of Neápoli, Peloponnese, Greece. The most recent of magnitude 5 or more: M5.2 on 7 Jun 2026, 27 km NW of Psachná, Central Greece, Greece.
Counts from the USGS ComCat catalogue (public domain), last compiled 13 Oct 2026. Outside the United States, ComCat is complete from about magnitude 4.5, so smaller local earthquakes may be missing from these counts but appear in the lists below. How these pages are built
Last 24 hours
No earthquakes recorded within 250 km of Piraeus in the last 24 hours.
Earlier this week, magnitude 2.5 and above
| Mag | Location | Time (UTC) |
|---|---|---|
| 3.8Mw | 51 km W of Kalloní, North Aegean, Greece |
Largest in the last 30 days
| Mag | Location | Time (UTC) |
|---|---|---|
| 4.9mb | 20 km SE of Zakynthos, Ionian Islands, Greece3 agencies | |
| 4.7mb | 59 km S of Karyes, Mount Athos, Greece3 agencies | |
| 4.5mb | 32 km SSE of Gargaliánoi, Peloponnese, Greece | |
| 4.4mb | 17 km E of Diakoptó, West Greece, Greece | |
| 4.3mb | 26 km SW of Pýrgos, West Greece, Greece | |
| 4.2mwr | 55 km S of Karyes, Mount Athos, Greece3 agencies | |
| 4.1mb | 60 km SSE of Náxos, South Aegean, Greece2 agencies | |
| 4.0Mw | 62 km S of Karyes, Mount Athos, Greece | |
| 3.8Mw | 51 km W of Kalloní, North Aegean, Greece |
Where they occurred
Largest since 1900
Magnitude 6 and above within 250 km of Piraeus.
Loading the historical catalogue…
Questions
How many earthquakes happen within 250 km of Piraeus?
In the last 30 days, 9 earthquakes of magnitude 2.5 or greater were recorded within 250 km of Piraeus, 1 of them in the last 7 days. In the last 24 hours, 0 earthquakes of any magnitude were recorded. Most small earthquakes are not felt.
What was the largest recent earthquake within 250 km of Piraeus?
The largest in the last 30 days was a magnitude 4.9 earthquake 20 km SE of Zakynthos, Ionian Islands, Greece on 25 Oct 2026, at a depth of 10 km.
How deep are earthquakes within 250 km of Piraeus?
100% of the magnitude 2.5+ earthquakes recorded within 250 km of Piraeus in the last 30 days were shallower than 70 km. Shallow earthquakes generally cause stronger shaking at the surface than deep ones of the same magnitude.
Where can I get official earthquake information for Greece?
For official information, warnings and safety advice, follow National Observatory of Athens (https://www.gein.noa.gr/en/) and your local civil protection authority. This site compiles agency reports and is not a warning service.
Can earthquakes be predicted?
No. Scientists can estimate how likely strong shaking is in a region over years or decades, but no method predicts the time, place and size of a specific earthquake. Aftershocks are expected after large earthquakes and become less frequent over time.