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Light mag. 3.7 earthquake - Ionian Sea, 24 km west of Amaliada, Ilia Prefecture, Western Greece, on Sunday, Nov 20, 2022 at 3:31 pm (GMT +2) -

Light mag. 3.7 earthquake - Ionian Sea, 24 km west of Amaliada, Ilia Prefecture, Western Greece, on Sunday, Nov 20, 2022 at 3:31 pm (GMT +2) Light mag. 3.7 earthquake - Ionian Sea, 24 km west of Amaliada, Ilia Prefecture, Western Greece, on Sunday, Nov 20, 2022 at 3:31 pm (GMT +2)

Light magnitude 3.7 earthquake at 17 km depth

20 Nov 13:35 UTC: First to report: EMSC after 4 minutes.
20 Nov 13:38: Now using data updates from NOA
20 Nov 14:25: Hypocenter depth recalculated from 5.0 to 16.6 km (from 3.1 to 10.3 mi). Epicenter location corrected by 2.9 km (1.8 mi) towards ESE.

Earthquake details

Date & timeNov 20, 2022 13:31:17 UTC -
Local time at epicenterSunday, Nov 20, 2022 at 3:31 pm (GMT +2)
Depth16.6 km
Epicenter latitude / longitude37.8214°N / 21.0782°E (Ionian Sea, Greece)
Antipode37.821°S / 158.922°W
Shaking intensityWeak shaking
Felt6 reports
Primary data sourceNOA (National Observatory of Athens)
Nearest volcanoSousaki (177 km / 110 mi)
Nearby towns and cities4 km (2 mi) SW of Arkoudi (pop: 1,310) | Show on map | Quakes nearby
14 km (9 mi) SSW of Kyllini (pop: 1,080) | Show on map | Quakes nearby
15 km (10 mi) WSW of Gastouni (pop: 8,110) | Show on map | Quakes nearby
17 km (10 mi) ENE of Zakynthos (pop: 11,500) | Show on map | Quakes nearby
24 km (15 mi) W of Amaliada (pop: 16,800) | Show on map | Quakes nearby
34 km (21 mi) SW of Varda (pop: 3,310) | Show on map | Quakes nearby
36 km (22 mi) WNW of Pyrgos (Pirgos) (pop: 22,400) | Show on map | Quakes nearby
233 km (145 mi) W of Athens (pop: 664,000) | Show on map | Quakes nearby
91 km (57 mi) S of Kalamos Island (pop: 496) | Show on map | Quakes nearby
165 km (103 mi) SSE of Antipaxos Island (pop: 20) | Show on map | Quakes nearby
Weather at epicenter at time of quakeBroken Clouds 21.4°C (70 F), humidity: 94%, wind: 6 m/s (11 kts) from SSE
Estimated seismic energy released2.2 x 1010 joules (6.22 megawatt hours, equivalent to 5.35 tons of TNT) | about seismic energy
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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.
3.717 kmGreece: 15 Km SW From KilliniNOA
4.310 kmSouthern GreeceRaspberryShake
4.010 kmSouthern GreeceGFZ
4.310 km12 Km SE of Ambelókipoi, GreeceUSGS
4.310 kmGreece: Ionian SeaIRIS
4.310 kmGreece: Zakinthos / Ionisches MeerZAMG


Seismic station: Castrocucco, Italy (CUC/MN network) | Distance from quake: 515 km / 320 mi | Show on map | Station Info
Seismic station Castrocucco, Italy: vertical movement plot around time of quake (source: IRIS/BUD)
Seismogram (vertical component) around time of quake. Thin dotted red line indicates time of quake. Seismic waves arrive some time later, depending on distance. Bandpass filter applied: 0.5-5.0 Hz. Source: IRIS Buffer of Uniform Data (BUD) webtool
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User reports for this quake (6)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
Leave a comment if you find a particular report interesting or want to add to it.
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Kastro kyllini (9 km NNE of epicenter) [Map] / Very weak shaking (MMI II) / rattling, vibrating / 2-5 s : Mild  
Zakinthos (16.2 km WSW of epicenter) [Map] / Weak shaking (MMI III) / rattling, vibrating / 2-5 s (reported through our app)
Zakynthos / Very weak shaking (MMI II) / single lateral shake / 1-2 s
glyfa 27050 / Light shaking (MMI IV) / complex rolling (tilting in multiple directions) / 2-5 s
Zakynthos / Weak shaking (MMI III) / 2-5 s
Zakynthos / Very weak shaking (MMI II) / single lateral shake / 2-5 s (reported through our app)

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