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Very strong mag. 6.3 earthquake - 8.6 km northeast of Poros, Kefallonia Regional Unit, Ionian Islands, Greece, on Sunday, August 9, 1953 at 07:41 GMT

Very strong mag. 6.3 earthquake - 8.6 km northeast of Poros, Kefallonia Regional Unit, Ionian Islands, Greece, on Sunday, August 9, 1953 at 07:41 GMT Very strong mag. 6.3 earthquake - 8.6 km northeast of Poros, Kefallonia Regional Unit, Ionian Islands, Greece, on Sunday, August 9, 1953 at 07:41 GMT

Very strong magnitude 6.3 earthquake at 15 km depth

Earthquake details

Date & timeAug 9, 1953 07:41:10 UTC
Local time at epicenter
StatusConfirmed
Magnitude6.3
Depth15.0 km
Epicenter latitude / longitude38.216°N / 20.83°E (Ionian Sea, Greece)
Antipode38.216°S / 159.17°W
Shaking intensityStrong shaking near epicenter
Felt0 reports
Primary data sourceUSGS (United States Geological Survey)
Nearest volcanoVolos-Atalanti (194 km / 121 mi)
Nearby towns and cities9 km (5 mi) NE of Poros (pop: 1,060) | Show on map | Quakes nearby
19 km (12 mi) SSE of Ithaki (pop: 1,840) | Show on map | Quakes nearby
30 km (19 mi) E of Argostoli (pop: 9,820) | Show on map | Quakes nearby
49 km (30 mi) N of Zakynthos (pop: 11,500) | Show on map | Quakes nearby
65 km (40 mi) NW of Amaliada (pop: 16,800) | Show on map | Quakes nearby
68 km (42 mi) SW of Agrinio (pop: 46,900) | Show on map | Quakes nearby
79 km (49 mi) W of Patras (pop: 168,000) | Show on map | Quakes nearby
81 km (50 mi) NW of Pyrgos (Pirgos) (pop: 22,400) | Show on map | Quakes nearby
83 km (51 mi) S of Preveza (Préveza) (pop: 17,300) | Show on map | Quakes nearby
255 km (158 mi) W of Athens (pop: 664,000) | Show on map | Quakes nearby
Estimated seismic energy released1.8 x 1014 joules (49.4 gigawatt hours, equivalent to 42502 tons of TNT or 2.7 atomic bombs!) | about seismic energy
Show interactive Map
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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.DepthLocationSource
6.315 kmGreeceUSGS
Note: for quakes of 2012 and earlier, our database often contains only records from USGS.

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 (19 quakes)

Date and timeMag
Depth
LocationDetails
Dec 28, 1953 02:38
69 years ago
5.6

15 km
Kefalonia, 16 km N of Argostoli, GreeceMore
Nov 30, 1953 13:20
69 years ago
5.6

15 km
Nisida Agios Sostis, 6 km W of Lakkopetra, Achaea, Western GreeceMore
Oct 21, 1953 18:39
69 years ago
6.2

15 km
Kefalonia, 3 km SW of Vlachata, Kefallonia Regional Unit, Ionian Islands, GreeceMore
Oct 21, 1953 11:31
69 years ago
5.6

15 km
Kefalonia, 4.9 km NW of Poros, Kefallonia Regional Unit, Ionian Islands, GreeceMore
Oct 16, 1953 21:44
69 years ago
5.4

15 km
23 km SE of Argostoli, Kefallonia Regional Unit, Ionian Islands, GreeceMore
Oct 10, 1953 21:29
69 years ago
5.6

15 km
19 km E of Poros, Kefallonia Regional Unit, Ionian Islands, GreeceMore
Sep 14, 1953 14:56
69 years ago
5.7

15 km
7.8 km NE of Poros, Kefallonia Regional Unit, Ionian Islands, GreeceMore
Aug 17, 1953 02:12
70 years ago
5.3

15 km
Nisida Voïdi, 5.1 km NE of Zakynthos, Ionian Islands, GreeceMore
Aug 13, 1953 03:22
70 years ago
5.4

15 km
5.1 km E of Poros, Kefallonia Regional Unit, Ionian Islands, GreeceMore
Aug 12, 1953 16:08
70 years ago
5.5

15 km
19 km SE of Poros, Kefallonia Regional Unit, Ionian Islands, GreeceMore
Aug 12, 1953 14:08
70 years ago
6.0

15 km
13 km E of Poros, Kefallonia Regional Unit, Ionian Islands, GreeceMore
Aug 12, 1953 13:39
70 years ago
5.7

15 km
29 km N of Zakynthos, Ionian Islands, GreeceMore
Aug 12, 1953 12:05
70 years ago
6.2

15 km
15 km NW of Zakynthos, Ionian Islands, GreeceMore
Aug 12, 1953 11:33
70 years ago
5.6

15 km
26 km N of Zakynthos, Ionian Islands, GreeceMore
Aug 12, 1953 09:23
70 years ago
6.8

10 km
15 km E of Poros, Kefallonia Regional Unit, Ionian Islands, GreeceMore
Aug 12, 1953 06:08
70 years ago
5.5

15 km
Ithaca, 7.2 km W of Agrilias, Kefallonia Regional Unit, Ionian Islands, GreeceMore
Aug 11, 1953 13:11
70 years ago
5.4

15 km
5.3 km SE of Poros, Kefallonia Regional Unit, Ionian Islands, GreeceMore
Aug 11, 1953 12:43
70 years ago
5.4

15 km
31 km N of Kefalonia Island, Kefallonia Regional Unit, Ionian Islands, GreeceMore
Aug 11, 1953 03:32
70 years ago
6.5

10 km
Ithaca, 18 km E of Samos, Kefallonia Regional Unit, Ionian Islands, GreeceMore

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