Light mag. 3.8 earthquake - Aegean Sea, 3.4 km northwest of Agios Konstantinos, North Aegean, Greece, on Friday, 4 Dec 2020 11:34 am (GMT +2) -
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Light magnitude 3.8 earthquake at 11 km depth
4 Dec 09:37 UTC: First to report: EMSC after 3 minutes.
4 Dec 09:38: Magnitude recalculated from 3.5 to 4.0. Epicenter location corrected by 2.4 km (1.5 mi) towards SSE.
4 Dec 10:02: 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 WSW.
4 Dec 10:06: Now using data updates from NOA
4 Dec 09:38: Magnitude recalculated from 3.5 to 4.0. Epicenter location corrected by 2.4 km (1.5 mi) towards SSE.
4 Dec 10:02: 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 WSW.
4 Dec 10:06: Now using data updates from NOA
Date & time: 4 Dec 2020 09:34:14 UTC -
Local time at epicenter: Friday, 4 Dec 2020 11:34 am (GMT +2)
Magnitude: 3.8
Depth: 11.0 km
Epicenter latitude / longitude: 37.831°N / 26.797°E

Nearest volcano: Akyarlar (105 km / 65 mi)
Nearby towns and cities:
2 km (2 mi) N of Livadaki (pop: 28) --> See nearby quakes!
15 km (9 mi) NE of Marathokampos (pop: 1,070) --> See nearby quakes!
15 km (9 mi) NW of Mytilinioi (pop: 1,980) --> See nearby quakes!
36 km (22 mi) SW of Özdere (İzmir, Turkey) (pop: 13,500) --> See nearby quakes!
41 km (25 mi) W of Kusadasi (Aydın, Turkey) (pop: 63,200) --> See nearby quakes!
41 km (25 mi) S of Seferihisar (İzmir, Turkey) (pop: 19,600) --> See nearby quakes!
55 km (34 mi) SSW of Menderes (İzmir, Turkey) (pop: 22,000) --> See nearby quakes!
61 km (38 mi) SW of Torbalı (İzmir, Turkey) (pop: 50,300) --> See nearby quakes!
144 km (89 mi) S of Mytilene (Mitilini) (pop: 28,300) --> See nearby quakes!
270 km (168 mi) E of Athens (Attica) (pop: 664,000) --> See nearby quakes!
91 km (57 mi) SE of Chios Island (pop: 32,400) --> See nearby quakes!
43 km (27 mi) NNW of Agathonisi Island (pop: 150) --> See nearby quakes!
Weather at epicenter at time of quake:
Scattered Clouds
17°C (63 F), humidity: 67%, wind: 5 m/s (10 kts) from SE
Primary data source: NOA (National Observatory of Athens)Scattered Clouds

Estimated released energy: 3.2 x 1010 joules (8.78 megawatt hours, equivalent to 7.56 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 |
3.8 | 11 km | DODECANESE ISLANDS, GREECE | NOA |
4.1 | 5 km | SISAM ADASI (AEGEAN SEA) REVIZED01 (2020.12.04, Greece | KOERI-RETMC |
4.0 | 10 km | Greece | EMSC |
4.2 | 12 km | Dodecanese Islands, Greece | NIEP |
User reports for this quake (6)
User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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66.5 km NNE of epicenter [Map] / Very weak shaking (MMI II)
68.5 km NNE of epicenter [Map] / Weak shaking (MMI III) / horizontal (sideways) swinging / 2-5 s
Didim / Light shaking (MMI IV) / horizontal (sideways) swinging / 2-5 s : Light shake in Didim turkey
Güzelcamli / Weak shaking (MMI III)
Izmir Balcova / Light shaking (MMI IV) / horizontal (sideways) swinging / 5-10 s : Izmir Weak shaking
izmir / Strong shaking (MMI VI) / rattling, vibrating / 5-10 s : SALLADI
Earlier earthquakes in the same area
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