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Strong mag. 6.8 earthquake - Nisida Agios Georgios, 2.8 km southeast of Galaxidi, Phocis, Central Greece, on Wednesday, March 31, 1965 at 09:47 GMT

Strong magnitude 6.8 earthquake at 75 km depth

Earthquake details

Date & time	Mar 31, 1965 09:47:31 UTC
Local time at epicenter
Status	Confirmed
Magnitude	6.8
Depth	75.0 km
Epicenter latitude / longitude	38.365°N / 22.405°E (Ionian Sea, Greece)
Antipode	38.365°S / 157.595°W
Shaking intensity	Strong shaking near epicenter
Felt	0 reports
Primary data source	USGS (United States Geological Survey)
Nearest volcano	Sousaki (77 km / 48 mi)
Nearby towns and cities	3 km (2 mi) SE of Galaxidi (pop: 3,030) \| Show on map \| Quakes nearby 31 km (19 mi) ENE of Aigio (pop: 20,400) \| Show on map \| Quakes nearby 42 km (26 mi) W of Livadia (Levádhia) (pop: 21,500) \| Show on map \| Quakes nearby 60 km (37 mi) ENE of Patras (pop: 168,000) \| Show on map \| Quakes nearby 67 km (42 mi) NW of Corinto (pop: 30,200) \| Show on map \| Quakes nearby 80 km (50 mi) W of Thebes (pop: 22,000) \| Show on map \| Quakes nearby 86 km (54 mi) NNW of Argos (pop: 22,200) \| Show on map \| Quakes nearby 91 km (57 mi) ESE of Agrinio (pop: 46,900) \| Show on map \| Quakes nearby 95 km (59 mi) N of Tripoli (pop: 26,600) \| Show on map \| Quakes nearby 123 km (77 mi) WNW of Athens (pop: 664,000) \| Show on map \| Quakes nearby
Weather at epicenter at time of quake
Estimated seismic energy released	1 x 10¹⁵ joules (278 gigawatt hours, equivalent to 2.4 x 10⁵ tons of TNT or 14.9 atomic bombs!) \| about seismic energy

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Data for the same earthquake reported by different agencies

Info: The more agencies report about the same quake and post similar data, the more confidence you can have in the data. It takes normally up to a few hours until earthquake parameters are calculated with near-optimum precision.

Mag.	Depth	Location	Source
6.8	75 km	Greece	USGS

Note: for quakes of 2012 and earlier, our database often contains only records from USGS.

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User reports for this quake

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.

There are no user reports for this quake.

Aftershocks

[More info]

Recorded aftershocks, latest first (2 quakes)

Date and time	Mag Depth	Location	Details
Jul 6, 1965 03:18 58 years ago	6.3 20 km	Nisida Agios Dimitrios, 12 km SE of Itea, Phocis, Central Greece	More
Apr 5, 1965 03:12 58 years ago	6.1 20 km	1.7 km S of Elliniko Trikolonon, Arcadia, Peloponnese, Greece	More

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