| 20:03 UTC|
| 6.2 Mw|
| 20 June 1978 (1978-06-20)|
1978 Thessaloniki earthquake Wikipedia
The Great Thessaloniki earthquake (Greek: Μεγάλος Σεισμός της Θεσσαλονίκης) occurred on 20 June at 23:03 local time. The shock registered 6.2 on the moment magnitude scale, had a maximum Mercalli intensity of IX (Violent), and was felt throughout northern Greece, Yugoslavia and Bulgaria. It was the largest event in the area since the 1932 Ierissos earthquake.