M5.5 earthquake 7 km SW of Kéfalos, Greece
A magnitude 5.5 earthquake struck 7 km SW of Kéfalos, Greece on Wed, Sep 28, 1983, 1:59 AM GMT+2 (23:59 UTC), 159 km (99 mi) below the surface.
Map
Where this earthquake was located, with the others nearby. Select one for its page.
The earthquake
- Magnitude
- 5.5 (mb), moderate
- Local time
- UTC
- 1983-09-27 23:59:38 UTC
- Depth
- 158.6 km (98.5 mi), intermediate-depth
- Epicenter
- 36.688° N, 26.912° E
- Region
- Greece
- Strongest shaking
- IV, light shaking
- Tsunami flag
- No
- Status
- Reviewed by a seismologist
Shaking
The USGS ShakeMap: shaking estimated from seismic stations and the quake’s size, on the Modified Mercalli intensity scale.
- Strongest estimated
- IV, light shaking
- Peak ground acceleration
- 1.0% of gravity
- Peak ground velocity
- -1.0 cm/s
- Map
- Automatic
Did you feel it?
No one has reported feeling this quake to the USGS.
Nearest places
Distance and direction from each place to the epicenter, with its forecast.
Nearby
Within 100 km, magnitude 2.5 and up: 7 in the 60 days after this one and 0 in the 30 days before it.
After
- 3.716 km WSW of Sar?kemer, Turkey · 15694 days ago · 10 km deep · 96 km away
- 4.238 km SSW of Mandráki, Greece · 15666 days ago · 10 km deep · 45 km away
- 4.437 km S of Mandráki, Greece · 15655 days ago · 31 km deep · 48 km away
- 4.227 km SW of Mandráki, Greece · 15654 days ago · 12 km deep · 31 km away
- 3.97 km SW of Turgutreis, Turkey · 15654 days ago · 33 km deep · 41 km away
- 4.622 km WSW of Kéfalos, Greece · 15654 days ago · 36 km deep · 16 km away
- 4.031 km SSW of Mandráki, Greece · 15649 days ago · 33 km deep · 38 km away
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Sources
From the USGS Earthquake Hazards Program and its partner networks, event usp0001yps (also filed as gcmtb092783a, gcmt19830927235938, iscgem569130). Read Wed, Sep 30, 2026, 1:47 PM UTC.