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Lagos / Very weak shaking (MMI II) / 1-2 s
Weak mag. 3.0 earthquake - North Atlantic Ocean, 49 km southeast of Faro, Portugal, on Friday, Dec 3, 2021 at 10:46 pm (GMT -1) -
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Weak magnitude 3.0 earthquake at 25 km depth
4 Dec 00:09 UTC: First to report: EMSC after 22 minutes.
Earthquake details
| Date & time | Dec 3, 2021 23:46:54 UTC - |
| Local time at epicenter | Friday, Dec 3, 2021 at 10:46 pm (GMT -1) |
| Status | Confirmed |
| Magnitude | 3 |
| Depth | 25.0 km |
| Epicenter latitude / longitude | 36.73°N / 7.51°W  (North Atlantic Ocean, Portugal) |
| Antipode | 36.73°S / 172.49°E |
| Shaking intensity | Very weak shaking |
| Felt | 1 report |
| Primary data source | EMSC (European-Mediterranean Seismological Centre) |
| Nearby towns and cities | 42 km (26 mi) SSE of Fuzeta (Olhão Municipality) (pop: 2,150) | Show on map | Quakes nearby 44 km (28 mi) SE of Olhao (Olhão) (pop: 29,200) | Show on map | Quakes nearby 46 km (29 mi) SSE of Tavira (pop: 15,100) | Show on map | Quakes nearby 46 km (29 mi) SE of Laranjeiro (Moncarapacho) (pop: 20,500) | Show on map | Quakes nearby 49 km (30 mi) SE of Faro (pop: 41,400) | Show on map | Quakes nearby 64 km (40 mi) SE of Loule (Loulé) (pop: 23,100) | Show on map | Quakes nearby 65 km (40 mi) SE of Quarteira (pop: 18,800) | Show on map | Quakes nearby 77 km (48 mi) ESE of Albufeira (pop: 15,900) | Show on map | Quakes nearby 78 km (49 mi) SW of Huelva (Spain) (pop: 148,800) | Show on map | Quakes nearby 263 km (163 mi) SE of Lissabon (pop: 517,800) | Show on map | Quakes nearby 41 km (25 mi) SE of Armona Island (pop: 1000) | Show on map | Quakes nearby |
| Weather at epicenter at time of quake | Clear Sky  9°C (48 F), humidity: 56%, wind: 5 m/s (10 kts) from N |
| Estimated seismic energy released | 2 x 109 joules (554 kilowatt hours, equivalent to 0.477 tons of TNT) | about seismic energy |
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 |
| 3.0 | 25 km | Portugal: STRAIT OF GIBRALTAR | EMSC |
| 3.0 | 25 km | Portugal: GOLFO DE C | IGN |
User reports for this quake (1)
User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
Earlier earthquakes in the same area
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