Light mag. 2.9 earthquake - Ionian Sea, 23 km northeast of Patras, Achaea, Western Greece, on Tuesday, 23 Feb 2021 10:24 pm (GMT +2) -
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Light magnitude 2.9 earthquake at 8 km depth
23 Feb 20:28 UTC: First to report: EMSC after 4 minutes.
23 Feb 20:30: Now using data updates from NOA
23 Feb 21:16: Hypocenter depth recalculated from 5.0 to 8.1 km (from 3.1 to 5 mi). Epicenter location corrected by 4 km (2.5 mi) towards NE.
23 Feb 20:30: Now using data updates from NOA
23 Feb 21:16: Hypocenter depth recalculated from 5.0 to 8.1 km (from 3.1 to 5 mi). Epicenter location corrected by 4 km (2.5 mi) towards NE.
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Local time at epicenter: Tuesday, 23 Feb 2021 10:24 pm (GMT +2)
Magnitude: 2.9
Depth: 8.1 km
Epicenter latitude / longitude: 38.3501°N / 21.9566°E

Nearest volcano: Sousaki (110 km / 68 mi)
Nearby towns and cities:
6 km (4 mi) ENE of Kato Rodini (West Greece) (pop: 133) --> See nearby quakes!
12 km (8 mi) ESE of Nafpaktos (West Greece) (pop: 13,400) --> See nearby quakes!
16 km (10 mi) NW of Aigio (West Greece) (pop: 20,400) --> See nearby quakes!
23 km (14 mi) ENE of Patras (West Greece) (pop: 168,000) --> See nearby quakes!
33 km (20 mi) NE of Vrachnaiika (West Greece) (pop: 2,570) --> See nearby quakes!
42 km (26 mi) WSW of Amfissa (Central Greece) (pop: 6,850) --> See nearby quakes!
42 km (26 mi) ENE of Kato Achaḯa (Dimi, West Greece) (pop: 5,750) --> See nearby quakes!
46 km (28 mi) E of Messolonghi (Μεσολόγγι, West Greece) (pop: 12,800) --> See nearby quakes!
57 km (35 mi) ESE of Agrinio (West Greece) (pop: 46,900) --> See nearby quakes!
160 km (100 mi) WNW of Athens (Attica) (pop: 664,000) --> See nearby quakes!
Weather at epicenter at time of quake:
Clear Sky
7.6°C (46 F), humidity: 87%, wind: 1 m/s (1 kts) from E
Primary data source: NOA (National Observatory of Athens)Clear Sky

Estimated released energy: 1.4 x 109 joules (392 kilowatt hours, equivalent to 0.338 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.
Magnitude | Depth | Location | Source |
M 2.9 | 8.1 km | 12 Km SE From Nafpaktos, Greece | NOA |
M 3.0 | km | GREECE | EMSC |
User reports for this quake
User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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