Data last collected:
QuakeFactsEvidence report · prepared 23 October 2026https://quakes99.com/entity/usp0000v5r
USGS usp0000v5r
20 Jun 1978, 21:03
8 km ESE of Kolchikón, Greece
A magnitude 6.4 ms earthquake at 3 km depth.
Published location
Where is 8 km ESE of Kolchikón, Greece?
This locator uses the coordinates in the approved source record. It shows geographic context, not a site boundary, safety zone or property-risk area.
40.739000, 23.229000
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What the numbers mean
Magnitude measures event size; depth locates the source below the surface. Neither value alone establishes local damage or personal risk.
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Nearby events with a similar magnitude
Catalog fields and provenance
Event ID
usp0000v5r
Coordinates
40.739, 23.229
Network
us
Significance
630
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Questions this evidence can answer
01What exactly is this record?
Use the name, place, date and identifiers above to confirm that you have the right 8 km ESE of Kolchikón, Greece earthquake: magnitude 6.4 and depth | QuakeFacts record.
02What does the evidence establish?
Read the reported values with their units, coverage dates and source notes. Keep observed facts separate from estimates or interpretation.
03What should I verify next?
Follow the primary-source links and check the limitations before using this evidence for a decision, comparison or citation.
A closer look at 8 km ESE of Kolchikón, Greece
Depth in another unit
The recorded event depth of 3 km is approximately 1.86 miles below the source reference surface. Depth alone does not describe damage or local hazard.
Interpreting the recorded coordinates
The published position for 8 km ESE of Kolchikón, Greece is 40.739° north and 23.229° east. This expresses the source coordinates in hemispheres; it does not establish an entrance, public access or a safe route.