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Minor mag. 1.8 earthquake - 4.1 km northwest of Quarteira, Loulé Municipality, Faro, Portugal, on Sunday, Dec 4, 2022 at 8:52 pm (GMT +0) -

Minor magnitude 1.8 earthquake at 25 km depth

4 Dec 21:10 UTC: First to report: IGN after 18 minutes.

Earthquake details

Date & time	Dec 4, 2022 20:52:23 UTC -
Local time at epicenter	Sunday, Dec 4, 2022 at 8:52 pm (GMT +0)
Status	Confirmed
Magnitude	1.8
Depth	25.0 km
Epicenter latitude / longitude	37.0893°N / 8.1401°W (Albufeira Municipality, Faro, Portugal)
Antipode	37.089°S / 171.86°E
Shaking intensity	Not felt
Felt
Primary data source	IGN (Instituto Geográfico Nacional)
Nearest volcano	###NEARESTVOLCANO2###
Nearby towns and cities	2 km (1 mi) W of Vilamoura (pop: 1,900) \| Show on map \| Quakes nearby 4 km (3 mi) WNW of Quarteira (pop: 18,800) \| Show on map \| Quakes nearby 10 km (6 mi) E of Albufeira (pop: 15,900) \| Show on map \| Quakes nearby 12 km (7 mi) WSW of Loule (Loulé) (pop: 23,100) \| Show on map \| Quakes nearby 20 km (13 mi) WNW of Faro (pop: 41,400) \| Show on map \| Quakes nearby 27 km (17 mi) WNW of Olhao (Olhão) (pop: 29,200) \| Show on map \| Quakes nearby 36 km (22 mi) E of Portimao (pop: 38,500) \| Show on map \| Quakes nearby 201 km (125 mi) SSE of Lissabon (pop: 517,800) \| Show on map \| Quakes nearby
Weather at epicenter at time of quake	Scattered Clouds 14°C (57 F), humidity: 100%, wind: 3 m/s (6 kts) from SE
Estimated seismic energy released	3.2 x 10⁷ joules (8.78 kilowatt hours) \| 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.

Mag.	Depth	Location	Source
1.8	25 km	Portugal: E ALBUFEIRA.POR	IGN
1.8	25 km	Portugal	RaspberryShake

Most recent quakes Top 20 past 24 hrs Quakes in Portugal

Seismograms

Seismic station: Vaqueiros, Portugal (PVAQ/PM network) | Distance from quake: 51 km / 32 mi | Show on map | Station Info

Seismic station Vaqueiros, Portugal: 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: 0.5-10.0 Hz. Source: IRIS Buffer of Uniform Data (BUD) webtool

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Seismic station Vaqueiros, Portugal: horizontal (E-W) movement plot around time of quake (source: IRIS/BUD)

Seismic station Vaqueiros, Portugal: horizontal (N-S) movement plot around time of quake (source: IRIS/BUD)

Seismograms around time of quake, showing horizontal E-W and N-S ground movements. Source: IRIS Buffer of Uniform Data (BUD) webtool

Seismic station: Vila do Bispo, Portugal (PFVI/PM network) | Distance from quake: 61 km / 38 mi | Show on map | Station Info

Seismic station Vila do Bispo, Portugal: vertical movement plot around time of quake (source: IRIS/BUD)

Seismic station Vila do Bispo, Portugal: horizontal (E-W) movement plot around time of quake (source: IRIS/BUD)

Seismic station Vila do Bispo, Portugal: horizontal (N-S) movement plot around time of quake (source: IRIS/BUD)

Seismograms around time of quake.
Top: vertical movement, bottom: horizontal (E-W and N-S) movements. Source: IRIS Buffer of Uniform Data (BUD) webtool

Seismic station: Messejana, Aljustrel, Portugal (MESJ/LX network) | Distance from quake: 84 km / 52 mi | Show on map | Station Info

Seismic station Messejana, Aljustrel, Portugal: vertical movement plot around time of quake (source: IRIS/BUD)

Seismic station Messejana, Aljustrel, Portugal: horizontal (E-W) movement plot around time of quake (source: IRIS/BUD)

Seismic station Messejana, Aljustrel, Portugal: horizontal (N-S) movement plot around time of quake (source: IRIS/BUD)

Seismograms around time of quake.
Top: vertical movement, bottom: horizontal (E-W and N-S) movements. Source: IRIS Buffer of Uniform Data (BUD) webtool

Seismic station: Lisboa, Geofisico, Portugal (GGNV/LX network) | Distance from quake: 202 km / 125 mi | Show on map | Station Info

Seismic station Lisboa, Geofisico, Portugal: vertical movement plot around time of quake (source: IRIS/BUD)

Seismic station Lisboa, Geofisico, Portugal: horizontal (E-W) movement plot around time of quake (source: IRIS/BUD)

Seismic station Lisboa, Geofisico, Portugal: horizontal (N-S) movement plot around time of quake (source: IRIS/BUD)

Seismograms around time of quake.
Top: vertical movement, bottom: horizontal (E-W and N-S) movements. Source: IRIS Buffer of Uniform Data (BUD) webtool

Seismic station: COIMBRA, PORTUGAL (COI/SS network) | Distance from quake: 348 km / 216 mi | Show on map | Station Info

Seismic station COIMBRA, PORTUGAL: vertical movement plot around time of quake (source: IRIS/BUD)

Seismic station COIMBRA, PORTUGAL: horizontal (E-W) movement plot around time of quake (source: IRIS/BUD)

Seismic station COIMBRA, PORTUGAL: horizontal (N-S) movement plot around time of quake (source: IRIS/BUD)

Seismograms around time of quake.
Top: vertical movement, bottom: horizontal (E-W and N-S) movements. Source: IRIS Buffer of Uniform Data (BUD) webtool

User reports for this quake

At magnitude 1.8, such a quake wouldn't normally be felt by people, but could be recorded instrumentally.

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