Light mag. 3.8 earthquake - 11 km southeast of Argostoli, Kefallonia Regional Unit, Ionian Islands, Greece, on Thursday, 20 May 2021 at 22:09 (GMT) -

Light mag. 3.8 earthquake - 11 km southeast of Argostoli, Kefallonia Regional Unit, Ionian Islands, Greece, on Thursday, 20 May 2021 at 22:09 (GMT)

Light magnitude 3.8 earthquake at 18 km depth

20 May 22:13 UTC: First to report: EMSC after 4 minutes.
20 May 22:14: Now using data updates from NOA
20 May 22:26: Magnitude recalculated from 3.7 to 3.8. Hypocenter depth recalculated from 10.0 to 18.4 km (from 6.2 to 11.4 mi). Epicenter location corrected by 9 km (5.6 mi) towards S.
Date & time: 20 May 2021 22:09:11 UTC -
Magnitude: 3.8
Depth: 18.4 km
Epicenter latitude / longitude: 38.1331°N / 20.6017°E (Kefallonia Regional Unit, Ionian Islands, Greece)
Nearest volcano: Sousaki (220 km / 137 mi)
Nearby towns and cities:
2 km (1 mi) WNW of Vlachata (pop: 520) --> See nearby quakes!
11 km (7 mi) ESE of Argostoli (pop: 9,820) --> See nearby quakes!
14 km (8 mi) SSW of Samos (Kefallonia) (pop: 1,350) --> See nearby quakes!
15 km (9 mi) W of Poros (pop: 1,060) --> See nearby quakes!
28 km (17 mi) SSW of Ithaki (pop: 1,840) --> See nearby quakes!
47 km (29 mi) NW of Zakynthos (pop: 11,500) --> See nearby quakes!
89 km (55 mi) SW of Agrinio (West Greece) (pop: 46,900) --> See nearby quakes!
100 km (62 mi) W of Patras (West Greece) (pop: 168,000) --> See nearby quakes!
176 km (109 mi) SSE of Korfu (Kerkira) (pop: 27,000) --> See nearby quakes!
274 km (170 mi) W of Athens (Attica) (pop: 664,000) --> See nearby quakes!
Primary data source: NOA (National Observatory of Athens)
Estimated released energy: 3.2 x 1010 joules (8.78 megawatt hours, equivalent to 7.56 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
3.818 kmGreece: 12 Km ESE From ArgostolionNOA
3.85 kmGREECEEMSC
3.818 kmGreece: Mikhata / GriechenlandZAMG

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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Argostoli, Kefallonia, Ionian Islands (10.4 km W of epicenter) [Map] / Light shaking (MMI IV) / single lateral shake / 1-2 s
near Omiš, Split-Dalmatia (666.9 km NNW of epicenter) [Map] / Weak shaking (MMI III) / horizontal (sideways) swinging / 2-5 s
Argostoli, Kefallonia, Ionian Islands (10.4 km W of epicenter) [Map] / Light shaking (MMI IV) / single lateral shake / 1-2 s
Argostoli / Weak shaking (MMI III) / rattling, vibrating / 2-5 s : Ich habe zu erst einen Schall gehört und gespürt und dann kam das schütteln  
Agia Efimia,Kefalonia / Light shaking (MMI IV) / rattling, vibrating / 2-5 s : Was watching Tv and first I heard the noise and then the vibration  
Poros / Light shaking (MMI IV) / rattling, vibrating / 2-5 s
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