Moderate mag. 3.9 earthquake - 83 km southwest of İzmir, Turkey, Greece, on Saturday, 31 Oct 2020 6:12 am (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 16 hours earlier.
Moderate mag. 3.9 earthquake - 83 km southwest of İzmir, Turkey, Greece, on Saturday, 31 Oct 2020 6:12 am (GMT +2)

Moderate magnitude 3.9 earthquake at 8 km depth

31 Oct 04:17 UTC: First to report: EMSC after 4 minutes.
31 Oct 04:19: Hypocenter depth recalculated from 2.0 to 5.0 km (from 1.2 to 3.1 mi). Epicenter location corrected by 2.1 km (1.3 mi) towards ENE.
31 Oct 04:24: Hypocenter depth recalculated from 5.0 to 10.0 km (from 3.1 to 6.2 mi). Epicenter location corrected by 4.5 km (2.8 mi) towards ENE.
31 Oct 06:26: Magnitude recalculated from 4.0 to 3.9. Hypocenter depth recalculated from 10.0 to 8.0 km (from 6.2 to 5 mi). Epicenter location corrected by 3.5 km (2.1 mi) towards NNE.
Date & time: 31 Oct 2020 04:12:56 UTC -
Local time at epicenter: Saturday, 31 Oct 2020 6:12 am (GMT +2)
Magnitude: 3.9
Depth: 8.0 km
Epicenter latitude / longitude: 37.89°N / 26.46°E (Aegean Sea, Greece)
Nearest volcano: Akyarlar (126 km / 78 mi)
Nearby towns and cities:
19 km (12 mi) NW of Ormos Agiou Isidorou (pop: 23) --> See nearby quakes!
24 km (15 mi) WNW of Karlovasi (pop: 6,710) --> See nearby quakes!
33 km (20 mi) WNW of Agios Konstantinos (pop: 368) --> See nearby quakes!
38 km (24 mi) NW of Spatharaioi (pop: 236) --> See nearby quakes!
43 km (27 mi) WNW of Mytilinioi (pop: 1,980) --> See nearby quakes!
48 km (30 mi) SW of Seferihisar (Turkey) (pop: 19,600) --> See nearby quakes!
50 km (31 mi) SSE of Çeşme (Turkey) (pop: 21,300) --> See nearby quakes!
55 km (34 mi) SSW of Urla (Turkey) (pop: 45,200) --> See nearby quakes!
55 km (34 mi) SSE of Thymiana (pop: 1,570) --> See nearby quakes!
240 km (149 mi) E of Athens (pop: 664,000) --> See nearby quakes!
68 km (42 mi) SSE of Chios Island (pop: 32,400) --> See nearby quakes!
147 km (91 mi) S of Lesvos Island (pop: 86,400) --> See nearby quakes!
65 km (40 mi) NW of Agathonisi Island (pop: 150) --> See nearby quakes!
Weather at epicenter at time of quake:
Few Clouds 16°C (61 F), humidity: 93%, wind: 10 m/s (19 kts) from NNE
Primary data source: EMSC (European-Mediterranean Seismological Centre)
Estimated released energy: 4.5 x 1010 joules (12.4 megawatt hours, equivalent to 10.7 tons of TNT) More info
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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.
MagnitudeDepthLocationSource
M 3.98 kmDodecanese Islands, GreeceEMSC
M 3.65 kmAegean Sea, GreeceKOERI-RETMC

User reports for this quake (2)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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Aigina / Very weak shaking (MMI II)
Aydın (Turkey, 122 km E of epicenter) : Uykudan uyandım. 06:50 (reported through EMSC)
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