April 18, 1842 Earthquake: Maina (Laconia), Greece
An earthquake struck Maina (Laconia), Greece on April 18, 1842 at 08:30 UTC, 100 km below the surface. It caused a tsunami.
Map
Where it struck, with the other significant earthquakes within 200 km. Circles are sized and colored by magnitude; select one for its page.
The earthquake
- Date
- April 18, 1842
- Time
- 08:30 UTC
- Place
- Maina (Laconia), Greece
- Focal depth
- 100 km (62 mi)
- Intensity
- 9 on the Modified Mercalli scale
- Tsunami
- Yes: the tsunami it caused
- Epicenter
- 36.500° N, 22.300° E
- Country
- Greece
The toll
- Deaths
- Few (about 1 to 50)
- Injuries
- Few (about 1 to 50)
- Damage
- Severe (about $5 to $25 million)
- Houses destroyed
- Many (101 to 1,000)
- Houses damaged
- Many (101 to 1,000)
Where the literature gives no number, NCEI records a description on a scale of 1 to 4, printed here in its words. Damage is in millions of US dollars of the year of the event, not adjusted for inflation.
What the record says
NCEI’s account, from the sources it cites.
1842 April 18, Messinia. An earthquake off the southwestern coast of the Peloponnese cause widespread damage […] Villages in the valley of Pamisos suffered much damage. In Androusa almost all the houses were destroyed and the church was damaged (PKZ 1842, 5.19). At Naziri (Eva) the shock was strong enough to dislodge large pieces of rock; most houses were ruined and two fell, killing one person; also the school collapsed, injuring eight people. Near here cracks, 40 cm wide and 7 m deep, appeared in the ground, probably as the result of landslides. At Tsorseri (Dzori) the ground liquefied. At Kourteroli most of the houses were ruined and the church collapsed. The water of springs in the Pamisos valley became turbid and wells overflowed. The flow of the river Pamisos was disturbed and in places the water overtopped its banks (PCF 1842, 6.7). Many of the older houses in Koroni collapsed completely and the rest were damaged. About one quarter of the length of the walls of the fort and some houses inside it also fell. Also at Modon (Methoni) the shocks caused some damage. It is said that many small villages on the western slopes of Mt Taigetos were destroyed, with great loss of life (PKZ 1842, 5.19), but details are lacking […] Houses and churches in Kalamata suffered various degrees of damage but none collapsed and there were no casualties .In Otilo 15 towers collapsed , killing one and injuring three people […] Near Koroni the sea flooded the coast, carrying boats onto the shore. (reference #9116)
1842 April 18. A damaging shock in Greece, houses and churches injured at KalAmai and Androusa, in the province of Mani some inhabitants were crushed beneath the ruins, at Phtrai little damage, felt at Sparti and Athinai (reference #1099)
Other significant earthquakes nearby
Within 200 km, the deadliest first.
- December 856, Korinthos,patrai (Patras), Greece
- July 21, 365, Knossos, Crete, Greece
- June 7, 1750, Morea,cerigo, Greece
- December 29, 1820, Zakinthos (Zante), Greece
- August 27, 1886, Triphylie (Peleponese), Philiatra, Greece
- August 23, 1817, Aeghion, Achaia, Greece
- February 25, 1742, Zakynthos, Greece
- November 2, 1791, Zante, Gastuni, Greece
- January 30, 1785, Patrai (Patras), Zakynthos (Zante), Greece
- April 5, 1965, Southern, Greece
- June 10, 1846, Messini-Micromani (Messinia), Greece
- April 17, 1893, Zakinthos (Zante), Gaitani-Keri, Greece
- February 24, 1981, Athens-Eastern Gulf of Corinth, Greece
- September 13, 1986, Kalami, Lakonia, Zakinthos, Greece
- April 22, 1928, Corinth (Corinthia), Greece
More
Significant earthquakes of 1842The 1800sRecent earthquakes near hereThis day in weather history
Sources
Significant earthquakes from NOAA’s National Centers for Environmental Information, Global Historical Hazard Database, cited as NCEI/WDS, doi:10.7289/V5PN93H7. Public domain. Read 2026-09-24. NCEI earthquake 1836.