| Date & time | Mar 23, 1983 23:51:06 UTC |
| Local time at epicenter | |
| Status | Confirmed |
| Magnitude | 6.4 |
| Depth | 19.1 km |
| Epicenter latitude / longitude | 38.294°N / 20.262°E  (Ionian Sea, Greece) |
| Antipode | 38.294°S / 159.738°W |
| Shaking intensity | Strong shaking near epicenter |
| Felt | 0 reports |
| Primary data source | USGS (United States Geological Survey) |
| Nearest volcano | Volos-Atalanti (235 km / 146 mi) |
| Nearby towns and cities | 18 km (11 mi) NW of Lixouri (pop: 3,750) | Show on map | Quakes nearby 34 km (21 mi) W of Samos (Kefallonia) (pop: 1,350) | Show on map | Quakes nearby 41 km (25 mi) W of Ithaki (pop: 1,840) | Show on map | Quakes nearby 71 km (44 mi) SSW of Lefkada (pop: 8,670) | Show on map | Quakes nearby 80 km (49 mi) NW of Zakynthos (pop: 11,500) | Show on map | Quakes nearby 85 km (53 mi) SSW of Preveza (Préveza) (pop: 17,300) | Show on map | Quakes nearby 106 km (66 mi) WSW of Agrinio (pop: 46,900) | Show on map | Quakes nearby 129 km (80 mi) W of Patras (pop: 168,000) | Show on map | Quakes nearby 161 km (100 mi) SSW of Ioannina (pop: 65,600) | Show on map | Quakes nearby 305 km (190 mi) W of Athens (pop: 664,000) | Show on map | Quakes nearby |
| Estimated seismic energy released | 2.5 x 1014 joules (69.8 gigawatt hours, equivalent to 60036 tons of TNT or 3.8 atomic bombs!) | about seismic energy |
| Mag. | Depth | Location | Source |
| 6.4 | 19 km | Greece | USGS |
Date and time | Mag Depth | Location | Details |
| Sep 9, 1983 04:09 39 years ago | 4.7 10 km | 59 km W of Pyrgos, Ilia Prefecture, Western Greece | More |
| Sep 8, 1983 22:18 39 years ago | 4.2 10 km | 59 km W of Pyrgos, Ilia Prefecture, Western Greece | More |
| Sep 2, 1983 05:30 39 years ago | 4.9 10 km | 66 km W of Pyrgos, Ilia Prefecture, Western Greece | More |
| Aug 30, 1983 07:41 39 years ago | 3.9 10 km | Nisida Agios Nikolaos, Western Greece, 21 km S of Preveza, Greece | More |
| Aug 26, 1983 08:12 39 years ago | 4.3 10 km | 19 km NW of Argostoli, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| Aug 22, 1983 04:38 39 years ago | 4.6 10 km | 37 km SW of Argostoli, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| Aug 12, 1983 23:29 40 years ago | 3.7 10 km | 23 km SW of Argostoli, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| Jul 29, 1983 02:26 40 years ago | 4.2 10 km | 59 km W of Zakynthos, Ionian Islands, Greece | More |
| Jul 27, 1983 03:03 40 years ago | 3.4 10 km | 61 km SW of Argostoli, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| Jul 16, 1983 00:47 40 years ago | 4.0 10 km | 25 km NW of Kefalonia Island, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| Jul 3, 1983 13:39 40 years ago | 4.3 10 km | 26 km W of Argostoli, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| Jul 3, 1983 10:57 40 years ago | 3.8 10 km | 29 km W of Argostoli, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| Jul 1, 1983 11:33 40 years ago | 4.1 10 km | 32 km NW of Agrinio, Aitoloakarnania, Western Greece | More |
| Jun 21, 1983 18:51 40 years ago | 3.9 10 km | 67 km S of Corfu, Korfu, Ionian Islands, Greece | More |
| Jun 20, 1983 10:25 40 years ago | 4.0 10 km | 54 km W of Zakynthos, Ionian Islands, Greece | More |
| Jun 15, 1983 09:25 40 years ago | 4.2 10 km | 60 km SW of Zakynthos, Ionian Islands, Greece | More |
| Jun 10, 1983 02:39 40 years ago | 4.5 10 km | 36 km NW of Kefalonia Island, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| Jun 4, 1983 11:54 40 years ago | 4.4 10 km | 45 km NW of Argostoli, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| Jun 4, 1983 11:23 40 years ago | 3.7 10 km | Kefalonia, 18 km E of Argostoli, Greece | More |
| Jun 2, 1983 17:51 40 years ago | 4.1 10 km | 54 km SW of Argostoli, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| May 29, 1983 05:09 40 years ago | 4.7 10 km | 28 km W of Kefalonia Island, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| May 28, 1983 06:08 40 years ago | 3.9 10 km | 39 km W of Argostoli, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| May 24, 1983 19:03 40 years ago | 4.5 10 km | 39 km SE of Kefalonia Island, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| May 24, 1983 16:02 40 years ago | 4.5 10 km | 23 km NW of Argostoli, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| May 21, 1983 23:52 40 years ago | 3.5 10 km | 32 km W of Argostoli, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| May 20, 1983 16:49 40 years ago | 4.0 9.1 km | 21 km W of Argostoli, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| May 19, 1983 04:42 40 years ago | 3.6 10 km | 27 km N of Argostoli, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| May 19, 1983 02:54 40 years ago | 3.5 10 km | 24 km NW of Argostoli, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| May 17, 1983 01:31 40 years ago | 3.5 10 km | 47 km W of Lixouri, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| May 16, 1983 21:20 40 years ago | 3.5 10 km | 20 km NW of Argostoli, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| May 16, 1983 18:59 40 years ago | 3.5 10 km | Nisida Voïdi, 2.2 km SW of Zakynthos, Ionian Islands, Greece | More |
| May 16, 1983 00:28 40 years ago | 3.7 10 km | 25 km W of Argostoli, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| May 15, 1983 23:07 40 years ago | 4.2 10.9 km | 22 km NW of Argostoli, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| May 15, 1983 22:16 40 years ago | 3.6 10 km | Kefalonia, 15 km NW of Argostoli, Greece | More |
| May 15, 1983 21:35 40 years ago | 4.1 10 km | 40 km NW of Argostoli, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| May 15, 1983 06:42 40 years ago | 3.8 10 km | Ithaca, 27 km NE of Argostoli, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| May 15, 1983 06:26 40 years ago | 3.8 10 km | 69 km SW of Argostoli, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| May 15, 1983 01:31 40 years ago | 3.5 10 km | 18 km NW of Argostoli, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| May 15, 1983 00:53 40 years ago | 3.5 10 km | 27 km NW of Argostoli, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| May 15, 1983 00:36 40 years ago | 3.5 10 km | 29 km NW of Argostoli, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| May 14, 1983 23:25 40 years ago | 4.9 10 km | 34 km NW of Kefalonia Island, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| May 14, 1983 23:22 40 years ago | 3.6 10 km | 24 km NW of Argostoli, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| May 14, 1983 23:13 40 years ago | 5.3 10 km | 33 km NW of Kefalonia Island, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| May 14, 1983 21:33 40 years ago | 3.5 10 km | 18 km NW of Argostoli, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| May 14, 1983 15:37 40 years ago | 3.7 10 km | 64 km SW of Argostoli, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| May 14, 1983 11:07 40 years ago | 3.6 10 km | 67 km W of Argostoli, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| May 14, 1983 02:33 40 years ago | 3.8 10 km | 34 km NW of Argostoli, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| May 14, 1983 01:27 40 years ago | 4.1 10 km | 30 km NW of Kefalonia Island, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| May 14, 1983 01:19 40 years ago | 4.7 10 km | 38 km NW of Kefalonia Island, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| May 14, 1983 01:02 40 years ago | 4.0 10 km | 39 km W of Argostoli, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| May 14, 1983 00:17 40 years ago | 4.6 10 km | 34 km NW of Kefalonia Island, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| May 13, 1983 23:50 40 years ago | 4.9 10 km | 37 km NW of Kefalonia Island, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| May 13, 1983 23:48 40 years ago | 4.8 8.5 km | 40 km NW of Kefalonia Island, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| May 13, 1983 07:48 40 years ago | 4.4 10 km | 41 km W of Argostoli, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| May 12, 1983 02:46 40 years ago | 4.1 10 km | Aitoloakarnania, Western Greece, 31 km SE of Preveza, Greece | More |
| May 9, 1983 09:03 40 years ago | 4.0 10 km | Ithaca, 64 km S of Preveza, Nomos Prevézis, Epirus, Greece | More |
| May 7, 1983 22:08 40 years ago | 4.0 10 km | 28 km NW of Argostoli, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| May 4, 1983 12:49 40 years ago | 3.5 10 km | Ithaca, 30 km NE of Argostoli, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| May 4, 1983 12:11 40 years ago | 3.4 10 km | 27 km E of Argostoli, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| May 3, 1983 22:54 40 years ago | 3.8 10.5 km | 67 km SW of Preveza, Nomos Prevézis, Epirus, Greece | More |
| May 2, 1983 09:45 40 years ago | 3.7 10 km | 58 km NW of Kefalonia Island, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| Apr 29, 1983 22:34 40 years ago | 3.7 10 km | Kefalonia, 22 km N of Argostoli, Greece | More |
| Apr 26, 1983 09:07 40 years ago | 4.0 10 km | 68 km W of Argostoli, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| Apr 23, 1983 21:33 40 years ago | 4.0 10 km | 39 km SW of Argostoli, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| Apr 23, 1983 15:01 40 years ago | 3.4 10 km | 22 km S of Zakynthos, Ionian Islands, Greece | More |
| Apr 22, 1983 02:46 40 years ago | 4.1 10 km | 44 km SW of Argostoli, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| Apr 19, 1983 10:23 40 years ago | 4.7 12 km | 46 km NW of Kefalonia Island, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| Apr 17, 1983 18:04 40 years ago | 4.1 10 km | 30 km W of Argostoli, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| Apr 17, 1983 15:34 40 years ago | 3.3 10 km | 37 km SW of Argostoli, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| Apr 15, 1983 15:53 40 years ago | 4.1 10 km | 52 km SW of Argostoli, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| Apr 15, 1983 03:29 40 years ago | 4.3 11 km | 33 km W of Argostoli, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| Apr 10, 1983 22:53 40 years ago | 4.0 10 km | 63 km W of Kefalonia Island, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| Apr 6, 1983 01:19 40 years ago | 3.7 10 km | 17 km SW of Argostoli, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| Apr 6, 1983 01:12 40 years ago | 3.7 10 km | 63 km W of Argostoli, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| Apr 5, 1983 10:58 40 years ago | 3.8 10 km | 67 km W of Kefalonia Island, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| Apr 3, 1983 08:52 40 years ago | 3.5 10 km | 124 km SW of Preveza, Nomos Prevézis, Epirus, Greece | More |
| Apr 1, 1983 12:42 40 years ago | 4.6 10 km | Lefkada, 20 km SW of Preveza, Nomos Prevézis, Epirus, Greece | More |
| Mar 31, 1983 07:19 40 years ago | 4.5 10 km | 43 km W of Argostoli, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| Mar 29, 1983 17:21 40 years ago | 4.0 10 km | 57 km SW of Argostoli, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| Mar 29, 1983 14:41 40 years ago | 3.8 10 km | Kefalonia, 16 km NE of Argostoli, Greece | More |
| Mar 29, 1983 06:26 40 years ago | 4.8 10 km | 35 km W of Argostoli, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| Mar 27, 1983 20:14 40 years ago | 4.0 10 km | 49 km W of Argostoli, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| Mar 27, 1983 15:34 40 years ago | 3.9 10 km | 38 km W of Argostoli, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| Mar 27, 1983 12:38 40 years ago | 3.7 10 km | 100 km SW of Preveza, Nomos Prevézis, Epirus, Greece | More |
| Mar 27, 1983 05:35 40 years ago | 4.0 10 km | 54 km W of Argostoli, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| Mar 27, 1983 04:50 40 years ago | 4.0 10 km | 54 km W of Argostoli, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| Mar 26, 1983 21:14 40 years ago | 4.2 10 km | 66 km W of Lixouri, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| Mar 26, 1983 17:17 40 years ago | 4.8 13 km | 45 km W of Argostoli, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| Mar 26, 1983 14:03 40 years ago | 4.4 10 km | 78 km SW of Preveza, Nomos Prevézis, Epirus, Greece | More |
| Mar 26, 1983 03:27 40 years ago | 4.7 10 km | 50 km W of Argostoli, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| Mar 26, 1983 01:29 40 years ago | 4.1 10 km | 75 km W of Argostoli, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| Mar 25, 1983 23:46 40 years ago | 3.9 10 km | 46 km NW of Argostoli, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| Mar 25, 1983 21:55 40 years ago | 4.0 10 km | 80 km W of Argostoli, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| Mar 25, 1983 21:12 40 years ago | 4.1 10 km | 51 km W of Argostoli, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| Mar 25, 1983 21:08 40 years ago | 4.3 10 km | 39 km W of Argostoli, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| Mar 25, 1983 21:00 40 years ago | 4.9 10 km | 30 km SW of Argostoli, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| Mar 25, 1983 20:43 40 years ago | 4.8 10 km | 30 km W of Argostoli, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| Mar 25, 1983 20:20 40 years ago | 4.9 10 km | 41 km W of Argostoli, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| Mar 25, 1983 20:01 40 years ago | 4.0 10 km | 51 km NW of Kefalonia Island, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| Mar 25, 1983 18:56 40 years ago | 5.0 10 km | 33 km W of Argostoli, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| Mar 25, 1983 11:00 40 years ago | 4.8 10 km | 47 km W of Argostoli, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| Mar 25, 1983 10:16 40 years ago | 4.3 10 km | 90 km SW of Preveza, Nomos Prevézis, Epirus, Greece | More |
| Mar 25, 1983 07:35 40 years ago | 4.4 10 km | 50 km W of Argostoli, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| Mar 25, 1983 06:14 40 years ago | 3.9 10 km | 74 km W of Kefalonia Island, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| Mar 25, 1983 06:00 40 years ago | 4.1 10 km | 72 km SW of Preveza, Nomos Prevézis, Epirus, Greece | More |
| Mar 25, 1983 01:41 40 years ago | 3.9 10 km | 81 km SW of Kefalonia Island, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| Mar 25, 1983 00:40 40 years ago | 3.8 33 km | 36 km NW of Argostoli, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| Mar 24, 1983 22:03 40 years ago | 4.6 10 km | 33 km W of Argostoli, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| Mar 24, 1983 19:35 40 years ago | 5.0 10 km | 38 km W of Argostoli, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| Mar 24, 1983 18:45 40 years ago | 4.4 10 km | 48 km W of Argostoli, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| Mar 24, 1983 14:19 40 years ago | 4.3 10 km | 50 km W of Argostoli, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| Mar 24, 1983 14:07 40 years ago | 4.8 10 km | 43 km W of Kefalonia Island, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| Mar 24, 1983 12:50 40 years ago | 4.9 10 km | 32 km SW of Argostoli, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| Mar 24, 1983 10:47 40 years ago | 4.6 10 km | 47 km NW of Kefalonia Island, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| Mar 24, 1983 08:28 40 years ago | 4.1 10 km | 39 km W of Argostoli, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| Mar 24, 1983 07:41 40 years ago | 3.9 10 km | 53 km SW of Argostoli, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| Mar 24, 1983 06:46 40 years ago | 4.1 10 km | 48 km W of Argostoli, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| Mar 24, 1983 05:24 40 years ago | 4.0 10 km | 46 km W of Argostoli, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| Mar 24, 1983 04:17 40 years ago | 5.3 25 km | 15 km W of Argostoli, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| Mar 24, 1983 03:54 40 years ago | 4.3 10 km | 50 km W of Argostoli, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| Mar 24, 1983 02:58 40 years ago | 4.2 10 km | 83 km SW of Preveza, Nomos Prevézis, Epirus, Greece | More |
| Mar 24, 1983 02:56 40 years ago | 4.2 10 km | 30 km W of Argostoli, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| Mar 24, 1983 02:35 40 years ago | 5.0 10 km | 47 km W of Kefalonia Island, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| Mar 24, 1983 02:17 40 years ago | 3.9 10 km | 48 km W of Argostoli, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| Mar 24, 1983 02:05 40 years ago | 4.9 10 km | 53 km NW of Kefalonia Island, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| Mar 24, 1983 01:29 40 years ago | 4.2 10 km | 65 km W of Argostoli, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| Mar 24, 1983 01:11 40 years ago | 4.7 10 km | 37 km W of Argostoli, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| Mar 24, 1983 00:37 40 years ago | 4.1 10 km | 60 km W of Argostoli, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| Mar 24, 1983 00:27 40 years ago | 3.7 10 km | 29 km NW of Agrinio, Aitoloakarnania, Western Greece | More |
| Mar 24, 1983 00:18 40 years ago | 4.5 10 km | 61 km W of Argostoli, Kefallonia Regional Unit, Ionian Islands, Greece | More |
| Mar 24, 1983 00:13 40 years ago | 4.5 10 km | 61 km W of Argostoli, Kefallonia Regional Unit, Ionian Islands, Greece | More |
