Light mag. 3.4 earthquake - 4.4 km NE of Néon Karlovásion, Greece, on Saturday, 31 Oct 2020 11:43 pm (GMT +2) -
This quake was likely an aftershock of the 6.7 quake Aegean Sea, 17 km northeast of Karlovasi, Samos, North Aegean, Greece, 30 Oct 2020 1:51 pm (GMT +2), which had occurred 1 day 10 hours earlier.
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Light magnitude 3.4 earthquake at 10 km depth
31 Oct 21:47 UTC: First to report: EMSC after 4 minutes.
31 Oct 21:49: Epicenter location corrected by 6.3 km (3.9 mi) towards NE.
31 Oct 21:50: Hypocenter depth recalculated from 5.0 to 12.0 km (from 3.1 to 7.5 mi). Epicenter location corrected by 2.1 km (1.3 mi) towards WSW.
31 Oct 23:04: Magnitude recalculated from 3.3 to 3.4. Hypocenter depth recalculated from 12.0 to 10.0 km (from 7.5 to 6.2 mi). Epicenter location corrected by 1.4 km (0.9 mi) towards SE.
31 Oct 21:49: Epicenter location corrected by 6.3 km (3.9 mi) towards NE.
31 Oct 21:50: Hypocenter depth recalculated from 5.0 to 12.0 km (from 3.1 to 7.5 mi). Epicenter location corrected by 2.1 km (1.3 mi) towards WSW.
31 Oct 23:04: Magnitude recalculated from 3.3 to 3.4. Hypocenter depth recalculated from 12.0 to 10.0 km (from 7.5 to 6.2 mi). Epicenter location corrected by 1.4 km (0.9 mi) towards SE.
Date & time: 31 Oct 2020 21:43:25 UTC -
Local time at epicenter: Saturday, 31 Oct 2020 11:43 pm (GMT +2)
Magnitude: 3.4
Depth: 10.0 km
Epicenter latitude / longitude: 37.82°N / 26.74°E

Nearest volcano: Akyarlar (108 km / 67 mi)
Nearby towns and cities:
1 km (1 mi) N of Agios Nikolaos (North Aegean) (pop: 26) --> See nearby quakes!
4 km (3 mi) NE of Karlovasi (North Aegean) (pop: 6,710) --> See nearby quakes!
18 km (11 mi) NW of Mytilinioi (North Aegean) (pop: 1,980) --> See nearby quakes!
43 km (27 mi) S of Seferihisar (İzmir, Turkey) (pop: 19,600) --> See nearby quakes!
46 km (28 mi) W of Kusadasi (Aydın, Turkey) (pop: 63,200) --> See nearby quakes!
56 km (35 mi) S of Urla (İzmir, Turkey) (pop: 45,200) --> See nearby quakes!
59 km (37 mi) W of Söke (Aydın, Turkey) (pop: 68,200) --> See nearby quakes!
71 km (44 mi) SSW of Karabağlar (İzmir, Turkey) (pop: 458,000) --> See nearby quakes!
81 km (50 mi) SE of Chios (North Aegean) (pop: 24,000) --> See nearby quakes!
265 km (165 mi) E of Athens (Attica) (pop: 664,000) --> See nearby quakes!
89 km (55 mi) SE of Chios Island (pop: 32,400) --> See nearby quakes!
44 km (28 mi) NNW of Agathonisi Island (pop: 150) --> See nearby quakes!
Weather at epicenter at time of quake:
Clear Sky
15°C (59 F), humidity: 87%, wind: 5 m/s (10 kts) from N
Primary data source: EMSC (European-Mediterranean Seismological Centre)Clear Sky

Estimated released energy: 7.9 x 109 joules (2.21 megawatt hours, equivalent to 1.9 tons of TNT) More info
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.
Magnitude | Depth | Location | Source |
M 3.4 | 10 km | Dodecanese Islands, Greece | EMSC |
M 3.4 | 14 km | Sisam Adasi (aegean Sea), Greece | KOERI-RETMC |
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