Moderate mag. 3.9 earthquake - North Atlantic Ocean, 298 km northeast of Funchal, Madeira, Portugal, on Tuesday, 23 Feb 2021 8:55 am (GMT -1) -

Moderate mag. 3.9 earthquake - North Atlantic Ocean, 298 km northeast of Funchal, Madeira, Portugal, on Tuesday, 23 Feb 2021 8:55 am (GMT -1)

Moderate magnitude 3.9 earthquake at 10 km depth

23 Feb 10:15 UTC: First to report: IGN after 20 minutes.
Date & time: 23 Feb 2021 09:55:07 UTC -
Local time at epicenter: Tuesday, 23 Feb 2021 8:55 am (GMT -1)
Magnitude: 3.9
Depth: 10.0 km
Epicenter latitude / longitude: 34.5523°N / 14.6415°W (North Atlantic Ocean, Portugal)
Nearby towns and cities:
284 km (176 mi) NE of Machico (pop: 12,600) --> See nearby quakes!
285 km (177 mi) NE of Santana (pop: 8,800) --> See nearby quakes!
293 km (182 mi) NE of Caniço (pop: 23,400) --> See nearby quakes!
296 km (184 mi) NE of São Vicente (pop: 6,060) --> See nearby quakes!
298 km (185 mi) NE of Funchal (pop: 100,800) --> See nearby quakes!
300 km (186 mi) NE of Porto Moniz (pop: 2,760) --> See nearby quakes!
300 km (187 mi) NE of São Martinho (Funchal) (pop: 26,500) --> See nearby quakes!
303 km (188 mi) NE of Câmara de Lobos (pop: 32,200) --> See nearby quakes!
309 km (192 mi) NE of Ponta do Sol (pop: 4,240) --> See nearby quakes!
675 km (420 mi) SW of Lisboa (pop: 517,800) --> See nearby quakes!
Weather at epicenter at time of quake:
Clear Sky 17.4°C (63 F), humidity: 81%, wind: 4 m/s (8 kts) from S
Primary data source: IGN (Instituto Geográfico Nacional)
Estimated released energy: 4.5 x 1010 joules (12.4 megawatt hours, equivalent to 10.7 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.
MagnitudeDepthLocationSource
M 3.910 kmAZORES-CABO DE SAN VICENTE, PortugalIGN

User reports for this quake (1)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
694.6 km NE of epicenter [Map] / Light shaking (MMI IV) / horizontal (sideways) swinging / 2-5 s
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Earlier earthquakes in the same area since 1900


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