Terremoto moderato mag. 3.9 - Mare Ionio, 22 km a nord est da Patrasso, Achaea, Grecia Occidentale, mercoledì, 17 febbraio 2021 -

Questo terremoto era probabilmente un foreshock del M 5.4 terremoto: Mare Ionio, 23 km a nord est da Patrasso, Achaea, Grecia Occidentale Wed, 17 Feb 2021 03:36che ha seguito 1 ora e 3 minuti dopo.
Terremoto moderato mag. 3.9 - Mare Ionio, 22 km a nord est da Patrasso, Achaea, Grecia Occidentale, mercoledì, 17 febbraio 2021

Terremoto moderato magnitudine 3.9 at 8 km depth

17 Feb 02:36 UTC: Primo a segnalare: GFZ dopo 3 minuti.
17 Feb 02:37: Ora utilizzando nuova fonte di dati: NOA
17 Feb 02:38: Posizione dell'epicentro corretta di 2 km (1.2 mi) al SE.
17 Feb 03:12: Magnitudine ricalcolata da 3.8 a 3.9. Profondità ricalcolata da 5.0 a 8.4 km (da 3.1 a 5.2 mi). Posizione dell'epicentro corretta di 3.7 km (2.3 mi) al N.
Data & ora: 17 Feb 2021 02:33:39 UTC -
Ora locale a epicentro: mercoledì, 17 feb 2021 04:33 (GMT +2)
Magnitudine: 3.9
Profondità: 8.4 km
Epicentro latitudine / longitudine: 38.3473°N / 21.9456°E (Mare Ionio, Grecia Occidentale, Grecia)
Vulcano più vicino: Sousaki (110 km / 68 mi)
Nearby towns and cities:
5 km ENE da Kato Rodini (West Greece) (pop: 133) --> Vedi sismi vicini
11 km ESE da Lepanto (Nafpaktos, West Greece) (pop: 13,400) --> Vedi sismi vicini
16 km NO da Aigio (West Greece) (pop: 20,400) --> Vedi sismi vicini
22 km ENE da Patrasso (West Greece) (pop: 168,000) --> Vedi sismi vicini
32 km NE da Vrachnaiika (West Greece) (pop: 2,570) --> Vedi sismi vicini
41 km ENE da Kato Achaḯa (Dimi, West Greece) (pop: 5,750) --> Vedi sismi vicini
43 km OSO da Amfissa (Central Greece) (pop: 6,850) --> Vedi sismi vicini
45 km E da Messolonghi (Μεσολόγγι, West Greece) (pop: 12,800) --> Vedi sismi vicini
56 km ESE da Agrinio (West Greece) (pop: 46,900) --> Vedi sismi vicini
161 km ONO da Atene (Attica) (pop: 664,000) --> Vedi sismi vicini
Weather at epicenter at time of quake:
Clear Sky -1.5°C (29 F), humidity: 53%, wind: 1 m/s (3 kts) from SW
Fonte dati primaria: NOA (National Observatory of Athens)
Stima dell'energia sismica liberata: 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.
3.98.4 km13 Km SE From Nafpaktos, GreeceNOA
4.310 kmGreeceGFZ
4.310 km7 Km NE of Kamárai, GreeceUSGS
4.110 kmGreeceNIEP
3.98 kmNavpaktos / Griechenland, GreeceZAMG

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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Antikyra Greece / Weak shaking (MMI III) / 2-5 s : I felt a vibration of bed, door  
Patras / Weak shaking (MMI III) / very short
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