M3.4 earthquake 21 km N of Oinoússes, Greece

A magnitude 3.4 earthquake struck 21 km N of Oinoússes, Greece on Tue, Jul 22, 2003, 2:57 AM GMT+3 (23:57 UTC), 32 km (20 mi) below the surface.

A larger quake followed: M3.7 13 km N of Psará, Greece. This one was a foreshock.

Map

Where this earthquake was located, with the others nearby. Select one for its page.

No one has reported feeling this quake to the USGS.

Reviewed by a seismologist.

Distance and direction from each place to the epicenter, with its forecast.

Within 100 km, magnitude 1.5 and up: 9 in the 60 days after this one and 5 in the 30 days before it.

From the USGS Earthquake Hazards Program and its partner networks, event usp000c31r. Read Wed, Sep 30, 2026, 11:19 PM UTC.