Mag. 4.2 earthquake - Ionian Sea, 3 km west of Glyfada, Phocis, Central Greece, on Wednesday, 13 Jan 2021 11:40 am (GMT +2) -
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Light magnitude 4.2 earthquake at 12 km depth
13 Jan 09:43 UTC: First to report: GFZ after 3 minutes.
13 Jan 09:45: Now using data updates from NOA
13 Jan 09:52: Magnitude recalculated from 4.1 to 4.2. Hypocenter depth recalculated from 5.0 to 13.0 km (from 3.1 to 8.1 mi). Epicenter location corrected by 3.3 km (2.1 mi) towards E.
13 Jan 10:35: Hypocenter depth recalculated from 13.0 to 11.6 km (from 8.1 to 7.2 mi).
13 Jan 09:45: Now using data updates from NOA
13 Jan 09:52: Magnitude recalculated from 4.1 to 4.2. Hypocenter depth recalculated from 5.0 to 13.0 km (from 3.1 to 8.1 mi). Epicenter location corrected by 3.3 km (2.1 mi) towards E.
13 Jan 10:35: Hypocenter depth recalculated from 13.0 to 11.6 km (from 8.1 to 7.2 mi).
Update Wed, 13 Jan 2021, 09:54
Magnitude 4.2 earthquake strikes near Glyfada, Phocis, Central Greece, Greece4.2 quake 13 Jan 11:40 am (GMT +2)
A magnitude 4.2 earthquake near Glyfada, Phocis, Central Greece, Greece, was reported only 14 minutes ago by the National Observatory of Athens (NOA), considered the main national agency that monitors seismic activity in Greece. The earthquake occurred at a shallow depth of 13 km beneath the epicenter in the morning on Wednesday 13 January 2021 at 11:40 am local time. The exact magnitude, epicenter, and depth of the quake might be revised within the next few hours or minutes as seismologists review data and refine their calculations, or as other agencies issue their report.
Our monitoring service identified a second report from the German Research Centre for Geosciences (GFZ) which listed the quake at magnitude 4.4. A third agency, the European-Mediterranean Seismological Centre (EMSC), reported the same quake at magnitude 4.2.
Based on the preliminary seismic data, the quake was probably felt by many people in the area of the epicenter. It should not have caused significant damage, other than objects falling from shelves, broken windows, etc.
In Glyfada (pop. 480) located 3 km from the epicenter, the quake should have been felt as light shaking.
Weak shaking might have been felt in Trizonia (pop. 64) located 4 km from the epicenter, Chania (pop. 62) 4 km away, Spilia (pop. 45) 5 km away, Kamarai (pop. 1,200) 11 km away, Rododafni (pop. 2,600) 14 km away, Aigio (pop. 20,400) 16 km away, Nafpaktos (pop. 13,400) 19 km away, and Patrai (pop. 168,000) 31 km away.
Our monitoring service identified a second report from the German Research Centre for Geosciences (GFZ) which listed the quake at magnitude 4.4. A third agency, the European-Mediterranean Seismological Centre (EMSC), reported the same quake at magnitude 4.2.
Based on the preliminary seismic data, the quake was probably felt by many people in the area of the epicenter. It should not have caused significant damage, other than objects falling from shelves, broken windows, etc.
In Glyfada (pop. 480) located 3 km from the epicenter, the quake should have been felt as light shaking.
Weak shaking might have been felt in Trizonia (pop. 64) located 4 km from the epicenter, Chania (pop. 62) 4 km away, Spilia (pop. 45) 5 km away, Kamarai (pop. 1,200) 11 km away, Rododafni (pop. 2,600) 14 km away, Aigio (pop. 20,400) 16 km away, Nafpaktos (pop. 13,400) 19 km away, and Patrai (pop. 168,000) 31 km away.
Earthquake data:
Local time at epicenter: Wednesday, 13 Jan 2021 11:40 am (GMT +2)
Magnitude: 4.2
Depth: 11.6 km
Epicenter latitude / longitude: 38.3908°N / 22.045°E
(Ionian Sea, Central Greece, Greece)Nearest volcano: Sousaki (105 km / 65 mi)
Nearby towns and cities:
3 km (2 mi) WNW of Glyfada (pop: 477) --> See nearby quakes!
16 km (10 mi) NNW of Aigio (West Greece) (pop: 20,400) --> See nearby quakes!
19 km (12 mi) E of Nafpaktos (West Greece) (pop: 13,400) --> See nearby quakes!
32 km (20 mi) ENE of Patras (West Greece) (pop: 168,000) --> See nearby quakes!
33 km (20 mi) WSW of Amfissa (pop: 6,850) --> See nearby quakes!
54 km (33 mi) E of Messolonghi (Μεσολόγγι, West Greece) (pop: 12,800) --> See nearby quakes!
61 km (38 mi) ESE of Agrinio (West Greece) (pop: 46,900) --> See nearby quakes!
62 km (38 mi) SSE of Karpenisi (pop: 6,890) --> See nearby quakes!
66 km (41 mi) SSW of Lamia (pop: 52,000) --> See nearby quakes!
154 km (96 mi) WNW of Athens (Attica) (pop: 664,000) --> See nearby quakes!
Weather at epicenter at time of quake:
Scattered Clouds
13.3°C (56 F), humidity: 59%, wind: 2 m/s (3 kts) from W
Primary data source: NOA (National Observatory of Athens)
Scattered Clouds
13.3°C (56 F), humidity: 59%, wind: 2 m/s (3 kts) from WEstimated released energy: 1.3 x 1011 joules (35 megawatt hours, equivalent to 30.1 tons of TNT) More info
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 4.2 | 12 km | 16 Km NNW From Aiyion, Greece | NOA |
| M 4.2 | 13 km | GREECE | EMSC |
| M 4.5 | 10 km | Greece | GFZ |
| M 4.5 | 10 km | 12 Km NNE of Kamárai, Greece | USGS |
| M 4.2 | 13 km | Tolofon / Griechenland, Greece | ZAMG |
| M 4.2 | 11 km | Greece | NIEP |
User reports for this quake
User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
There are no user reports for this quake yet. If you felt it be the first to report it!
Earlier earthquakes in the same area
Mag. 4.2 earthquake - Ionian Sea, 3 km west of Glyfada, Phocis, Central Greece, on Wednesday, 13 Jan 2021 11:40 am (GMT +2)
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