Moderate mag. 4.2 earthquake - 49 km west of Athens, Attica, Greece, on 11 Sep 2020, 06:00 -

Moderate mag. 4.2 earthquake - 49 km west of Athens, Attica, Greece, on 11 Sep 2020, 06:00

Moderate magnitude 4.2 earthquake at 13 km depth

11 Sep 03:03 UTC: First to report: GFZ after 3 minutes.
11 Sep 03:07: Magnitude recalculated from 4.8 to 4.2. Epicenter location corrected by 10 km (6.2 mi) towards S.
11 Sep 03:16: Now using data updates from NOA
11 Sep 04:06: Hypocenter depth recalculated from 12.0 to 13.0 km (from 7.5 to 8.1 mi). Epicenter location corrected by 2.4 km (1.5 mi) towards NNE.
Update Fri, 11 Sep 2020, 06:26
Felt magnitude 4.2 quake hits near Athens, Greece
Location and user reports for this morning's magnitude 4.2 quake in Greece
Location and user reports for this morning's magnitude 4.2 quake in Greece
A earthquake of magnitude 4.2 hit approx. 50 km WNW of Greece's capital Athens this morning at 06:00 am local time.
The tremor woke many people up when they felt a short vibration, sometimes a mild horizontal shaking when they were closer to the epicenter, which was located in the western part of the Corinthian Gulf a few km from the popular beach town of Psatha.
According to the National Observatory, the quake occurred at a depth of 13 km. It is likely tectonic in origin and related to the active regional Corinthian fault system. Although felt widely, its magnitude posed no threat to the population and infrastructure.

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Earthquake data

Date & time: Sep 11, 2020 03:00:58 UTC -
Local time at epicenter: 11 Sep 2020, 06:00
Magnitude: 4.2
Depth: 13.0 km
Epicenter latitude / longitude: 38.12°N / 23.18°E (Ionian Sea, Greece)
Antipode: 38.12°S / 156.82°W
Nearest volcano: Sousaki (23 km / 14 mi)
Nearby towns and cities:
13 km (8 mi) SW of Plataies (Voiotía) (pop: 919) --> See nearby quakes!
20 km (12 mi) NW of Megara (pop: 23,500) --> See nearby quakes!
28 km (18 mi) NE of Corinto (pop: 30,200) --> See nearby quakes!
42 km (26 mi) WNW of Keratsini (pop: 77,100) --> See nearby quakes!
45 km (28 mi) WNW of Nikaia (pop: 89,400) --> See nearby quakes!
45 km (28 mi) WNW of Piraeus (pop: 163,700) --> See nearby quakes!
46 km (29 mi) WNW of Peristeri (pop: 140,000) --> See nearby quakes!
49 km (30 mi) W of Acharnes (pop: 99,300) --> See nearby quakes!
49 km (31 mi) WNW of Kallithea (pop: 100,600) --> See nearby quakes!
50 km (31 mi) WNW of Athens (pop: 664,000) --> See nearby quakes!
Primary data source: NOA (National Observatory of Athens)
Estimated released energy: 1.3 x 1011 joules (35 megawatt hours, equivalent to 30.1 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.
Mag.DepthLocationSource
4.213 kmnear Psatha, GreeceNOA
4.213 kmGreeceEMSC
4.22.1 kmYunanistan (Greece)KOERI-RETMC
4.229 km13 Km SSW of Kaparéllion, GreeceUSGS
4.210 kmGreeceGFZ
4.213 kmVilia / Griechenland (Greece)ZAMG
3.913 kmGrčka (Greece)SSS

User reports for this quake (263)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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Zografos, Nomarchía Athínas, Attica (52.7 km ESE of epicenter) [Map] / Very weak shaking (MMI II) / rattling, vibrating / 1-2 s : I was half asleep, felt the bed shake, checked the app, and sure enough it was reported already! Great app! Fast response! Gives you a sense of security to know what's happening or what just happened! | 4 users found this interesting. (reported through our app)  
Výronas, Nomarchía Athínas, Attica (52.3 km ESE of epicenter) [Map] / not felt : Slept through it. (reported through our app)  
Neochori, Ilia Prefecture, West Greece (175.7 km W of epicenter) [Map] / not felt (reported through our app)
near Lygourio, Argolís, Peloponnese (54.3 km S of epicenter) [Map] / Light shaking (MMI IV) / 5-10 s
Kallithea, Nomarchía Athínas, Attica (49.6 km ESE of epicenter) [Map] / Moderate shaking (MMI V) (reported through our app)
Kallithea, Nomarchía Athínas, Attica (48.7 km ESE of epicenter) [Map] / Light shaking (MMI IV) (reported through our app)
Darjeeling (6099.7 km E of epicenter) [Map] / Very weak shaking (MMI II) : Very slight  
near Lygourio, Argolís, Peloponnese (54.4 km S of epicenter) [Map] / Light shaking (MMI IV) / horizontal (sideways) swinging
Athens, Nomarchía Athínas, Attica (51.1 km ESE of epicenter) [Map] / Light shaking (MMI IV)
Vouliagmeni, Greece (62.6 km ESE of epicenter) [Map] / Moderate shaking (MMI V) / 10-15 s
Kazantzaki 20 (45.5 km E of epicenter) [Map] / Light shaking (MMI IV) / rattling, vibrating / 2-5 s
Psychiko (53.1 km ESE of epicenter) [Map] / Very weak shaking (MMI II)
Near smyrni, Athens (50.6 km ESE of epicenter) [Map] / Moderate shaking (MMI V)
Melissia, Nomarchía Athínas, Attica (57.3 km E of epicenter) [Map] / Moderate shaking (MMI V)
Keratsini, Nomós Piraiós, Attica (43.2 km ESE of epicenter) [Map] / Moderate shaking (MMI V) (reported through our app)
Vari, Nomarchía Anatolikís Attikís, Attica (63.8 km ESE of epicenter) [Map] / Weak shaking (MMI III) / rattling, vibrating / 2-5 s
Agia Varvara, Nomarchía Athínas, Attica (45.5 km ESE of epicenter) [Map] / Weak shaking (MMI III) (reported through our app)
Korydallos, Nomós Piraiós, Attica (43.8 km ESE of epicenter) [Map] / Light shaking (MMI IV) / horizontal (sideways) swinging / 5-10 s (reported through our app)
Péfki, Nomarchía Athínas, Attica (54 km E of epicenter) [Map] / Light shaking (MMI IV)
Salamina, Nomós Piraiós, Attica (36.5 km ESE of epicenter) [Map] / Light shaking (MMI IV) (reported through our app)
Piraeus / Light shaking (MMI IV) / rattling, vibrating / 20-30 s : It felt like a long and quite strong vibration on the 5th floor I live. I woke up to my bed shaking and my small furniture rattling but no one else woke up in the household. | One user found this interesting.  
Loutraki / Light shaking (MMI IV) / 5-10 s : I woke up and felt it for around 5 seconds. My partner stayed sleeping. By the time I woke him, it had stopped! | One user found this interesting.  
Pefki / Light shaking (MMI IV) / single vertical bump / 2-5 s
Athens, Paleo Faliro / Light shaking (MMI IV) : I was awakened because my bed was shaking strongly, in a horizontal way.  
Athens / Light shaking (MMI IV) : It woke me up and the building shook for a few seconds.  
Pefki / Light shaking (MMI IV) / single vertical bump / 2-5 s
PENTELI / Light shaking (MMI IV) / single lateral shake / 1-2 s
Loutraki / Moderate shaking (MMI V)
Voula / Weak shaking (MMI III)
Isthmia / Very weak shaking (MMI II) / single lateral shake / 5-10 s
Koridallos / Light shaking (MMI IV) : Felt for approx 4 seconds  
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