M4.0 earthquake 112 km S of Koróni, Greece
A magnitude 4.0 earthquake struck 112 km S of Koróni, Greece on Wed, Oct 22, 1986, 11:24 AM GMT+2 (09:24 UTC), 33 km (21 mi) below the surface.
A larger quake followed: M4.5 73 km WSW of Kýthira, Greece. This one was a foreshock.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 4.0 (mb), light
- Local time
- UTC
- 1986-10-22 09:24:06 UTC
- Depth
- 33.0 km (20.5 mi), shallow
- Epicenter
- 35.793° N, 21.790° 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: 4 in the 60 days after this one and 1 in the 30 days before it.
After
- 4.467 km S of Koróni, Greece · 14579 days ago · 52 km deep · 46 km away
- 4.370 km WSW of Kýthira, Greece · 14570 days ago · 33 km deep · 48 km away
- 4.573 km WSW of Kýthira, Greece · 14566 days ago · 41 km deep · 42 km away
- 3.949 km S of Koróni, Greece · 14556 days ago · 33 km deep · 63 km away
Before
Earthquakes todayGreece earthquakesLive radar here
Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0002z7p. Read Wed, Sep 30, 2026, 10:31 PM UTC.