M3.4 earthquake 7 km E of Sykiá, Greece
A magnitude 3.4 earthquake struck 7 km E of Sykiá, Greece on Sun, Jul 21, 1991, 10:55 PM GMT+3 (19:55 UTC), 33 km (21 mi) below the surface.
A larger quake followed: M3.7 13 km NNE of Karyés, Greece. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 3.4 (mb, body-wave), minor
- Magnitude from
- USGS National Earthquake Information Center
- Local time
- UTC
- 1991-07-21 19:55:15 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 36.755° N, 23.025° E
- Region
- Greece
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
Did you feel it?
No one has reported feeling this quake to the USGS.
How well it is located
Reviewed by a seismologist.
- Depth from
- OPERATOR_ASSIGNED
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 1.5 and up: 5 in the 60 days after this one and 0 in the 30 days before it.
After
- 3.35 km ENE of Géfyra, Greece · 12860 days ago · 33 km deep · 8 km away
- 3.713 km NNE of Karyés, Greece · 12859 days ago · 69 km deep · 85 km away
- 3.228 km SSE of Spétses, Greece · 12832 days ago · 10 km deep · 36 km away
- 3.637 km W of Kýthira, Greece · 12817 days ago · 33 km deep · 82 km away
- 3.513 km ENE of Trípoli, Greece · 12817 days ago · 33 km deep · 99 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0004uf2. Read Mon, Oct 5, 2026, 7:48 AM UTC.