According to the EMSC, the tremor was recorded at 00:49 GMT with the epicentre located at a depth of 10 kilometres (over 6 miles), 46 kilometres southwest of the city of Ioannina.
The US Geological Survey said that the magnitude of the earthquake was 5.7. There have been no reports about any victims or damage caused by the earthquake so far.
#USGS🇺🇸の観測：— Nature of Terrestrial Planet (地球型惑星の自然) (@TaTohru) March 21, 2020
M 5.7 - 13km SSE of #Paramythia, #Greece.
Greece lies in a seismologically active region as the Mediterranean Sea is a border between the African and Eurasian plates. The movement of the African plate to the north – where the Eurasian plate lies – sometimes causes earthquakes and has already resulted in the formation of several mountain ranges in Europe, including the Alps.
Seismic activity in Greece resulted in the so-called Late Bronze Age eruption of the Santorini volcano in the 2nd millennium BC that triggered huge tsunami waves and caused the decline of the Minoan civilisation.