Major Earthquakes during the 20th century in Greece


    A strong earthquake struck 6,3R size at 1 March 1941 the city of Larissa and the nearby villages [Gerakari, Eleftherio, Nessie Nechali, Platykampos, Glafki, Halki]. 40 people killed and 100 injured. In Larissa 10% of buildings were completely destroyed and 60% received severe damage.

    On the evening of October 6, 1947 was a very strong earthquake in Messinia and Laconia magnitude 7 on the Richter scale. The most serious damage suffered by the region of Pylos where affected 54 settlements. Fully collapsed or became uninhabitable five schools, four churches and 6% of total housing. Another 10% suffered less damage.The earthquake had two notable features: a) long (in Kalamata vibration lasted about 80 seconds) and b) the uneven distribution of disaster area.

    22 Apr. 1948 6.4 R Large earthquake which did not cause major damage to the city as opposed to the villages and mainly in the southwest. 224 houses collapsed, 998 seriously damaged and 1,024 suffered minor cracks. There were 2 dead and 45 wounded. In the Basilica observed small wave (tsunami 1m.).

    On July 23, 1949 at 17:04 very strong earthquake measuring 6.7 on the Richter scale shook the island of Chios. Shortly after the strong vibration accompanied by noise and dust covered the atmosphere, due to the vibration banged the bells of churches and sea made small amount tsunami. During the earthquake killed three people and injured 50. The greatest disasters were Kardamila and Oinousses which almost completely destroyed the houses of the settlements.
  • Argostoli

    A strong earthquake (M = 7.2) occurred on 12 August in the Ionian islands. There had been many earthquakes, two of which were on 9/8 and 11/8 and they were devastating. Kefalonia, Zakynthos and Ithaca suffered from total destruction, and out of the 33300 homes of those islands the 27 659 were completely destroyed.455 people were killed and 2412 were injured. Disasters were also caused in Lefkada, in Aetolia and Elis. The largest aftershock (M = 6.3) occurred on the same day as the main quake.
  • Sofades

    On April 30th, 1954 an earthquake (M = 7.0) caused many disasters in the prefectures of Karditsa, Larissa, Trikala, Fthiotida, Magnesia and Haryana. 25 people were killed and 28,673 buildings were damaged (destroyed in 6599). In the prefecture of Karditsas the village Sofades was almost completely destroyed, while the villages Ladybird, New Konya, Asimochori, Leaf, Grammatiko, Ottoman etc were seriously damaged. Phenomena of liquidation , hydrological changes and soil burglaries were observed.
  • Volos

    A strong earthquake struck on April 19, 1955 the area of Volos. One person was killed and 41 were injured. 459 buildings were destroyed out of the 10 047 that suffered injuries. The greatest tensions were observed in: Drakeia, Agria, Ano and Kato Lechonia, Volos, 'Another Meria and Portaria. The earthquake caused damages in 61 villages in the prefecture of Magnesia and of North Evia. It was preceded by earthquakes of the main earthquake and subsequent aftershocks.
  • Amorgos

    A strong earthquake (M = 7.5) hit Amorgos, on 9 July 1956. The islands of Anafi, Astypalea, Ios, Kalymnos, Lipsi, Naxos, Paros, Santorini, Patmos sustained serious damages.53 people were killed and 100 were injured. In 3761 houses were observed losses (529 were completely destroyed). The marine gravity wave that broke had height that reached the 25m in the southeastern coast of Amorgos.On April 24, one day before the manifestation of the main earthquake, there was a pre-earthquake (M = 4.9).
  • Thessaloniki

    A strong earthquake occurred on June 20, 1978 in the city of Thessaloniki. The epicenter was in the area between the lakes of Volvi and Langada. Forty five people died and two hundred twenty were injured. The greatest damages were in the villages Stivos, Scholari, Gerakaroy, and Assiro. The largest crack that has been observed was 12km in length and 2cm in width and has occurred along the length of Peristeronas, Stivos and Gerakarou. The earthquake was 6,5 Richter.
  • Alkyonides

    The powerful earthquake of 6,7R on February 24, 1981 and his aftershock on March 4 (6,4R) caused serious disasters in Corinthia, Viotia, Attiki, Evia and Fokida. The villages Perachora, Pisia, Prodromos suffered from big damages. Twenty people died and dozens of people have been injured. 85.000 buildings were damaged while the 22.554 of them have been irreparable. In some areas, liquidation phenomena, collapsed rocks and weak sea wave gravity have been observed.
  • Kalamata

    The earthquake of 6R that occurred in Messinia on September 13, 1986 was particularly devastating. Twenty people were killed and eighty were injured. In the city of Kalamata four blocks collapsed. From the 9.124 buildings of Kalamata, the 20% were demolished, the 16% had suffered from heavy damages and the 36% had suffered from minor detriments. Rocks had fell from Taygetos and the traffic had stopped between the road of Sparti-Kalamata for 24 hours.
  • Aigio

    On June 15, 1995 a strong earthquake (6,4R) HIT Achaia and Fokida. Twenty six people were killed by a collapse of a building in Aigio and a hotel in Valimitika. Extensive damages were caused to buildings in the villages of Achaia (Valimitika) and Fokida (Eratini) but also, to the pier of Aigio’s port. In the region, in general, liquidation phenomena, ground’s fissure, movement in the coastline and underwater landslides were observed. The biggest pre-earthquake (4,6R) occurred on May 28.
  • Athens(Parnitha)

    The 1999 Athens earthquake, registering a moment magnitude of 6.0, occurred on September 7 and lasted approximately 15 seconds. The tremor was epicentered approximately 17 km to the northwest of the city center. This proximity to Athens resulted in widespread structural damage, mainly to the nearby towns as well as to the northern Athenian suburbs. Overall, 143 people lost their lives and more than 2,000 were treated for injuries in what eventually became Greece's deadliest natural disaster.