Mag. 3.3 earthquake - 4.1 km northeast of Santa Barbara, Angra do Heroísmo Municipality, Azores, Portugal, on 27 Oct 9:56 pm (GMT -1) -

Mag. 3.3 earthquake  - 4.1 km northeast of Santa Barbara, Angra do Heroísmo Municipality, Azores, Portugal, on 27 Oct 9:56 pm (GMT -1)

Minor magnitude 3.3 earthquake at 1 km depth

27 Oct 23:08 UTC: First to report: EMSC after 12 minutes.
Date & time: 27 Oct 2020 22:56:57 UTC -
Local time at epicenter: 27 Oct 9:56 pm (GMT -1)
Magnitude: 3.3
Depth: 1.0 km
Epicenter latitude / longitude: 38.73°N / 27.32°W (Angra do Heroismo Municipality, Azores, Portugal)
Nearest volcano: Terceira (1 km / 1 mi)
Nearby towns and cities:
4 km (3 mi) NNE of Santa Barbara (pop: 1,270) --> See nearby quakes!
8 km (5 mi) SW of Biscoitos (pop: 1,430) --> See nearby quakes!
12 km (8 mi) NW of Angra do Heroismo (Angra do Heroísmo Municipality) (pop: 12,000) --> See nearby quakes!
22 km (14 mi) W of Praia da Vitoria (Praia da Vitória) (pop: 6,060) --> See nearby quakes!
71 km (44 mi) ESE of Santa Cruz da Graciosa (pop: 1,780) --> See nearby quakes!
107 km (67 mi) ENE of Madalena (pop: 6,140) --> See nearby quakes!
122 km (76 mi) ENE of Ribeira Grande (Castelo Branco, Açores) (pop: 5,200) --> See nearby quakes!
182 km (113 mi) NW of Ponta Delgada (pop: 20,100) --> See nearby quakes!
188 km (117 mi) NW of Lagoa (pop: 14,400) --> See nearby quakes!
1576 km (979 mi) W of Lisbon (pop: 517,800) --> See nearby quakes!
Weather at epicenter at time of quake:
Broken Clouds 17.3°C (63 F), humidity: 68%, wind: 2 m/s (5 kts) from NW
Primary data source: EMSC (European-Mediterranean Seismological Centre)
Estimated released energy: 5.6 x 109 joules (1.56 megawatt hours, equivalent to 1.34 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 3.31 kmAzores Islands, PortugalEMSC
M 3.1 kmSta. Barbara (Terceira), PortugalIVAR (AZO)
M 3.1 kmSta. Barbara (Terceira), PortugalIVAR (AZO)

User reports for this quake (13)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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5 Ribeiras (5.6 km S of epicenter) [Map] / Light shaking (MMI IV) / vertical swinging (up and down) / 2-5 s
Doze Ribeiras (5.9 km SW of epicenter) [Map] / Moderate shaking (MMI V) : Bed shook and heard it.
Biscoitos (8.6 km NE of epicenter) [Map] / Moderate shaking (MMI V) / horizontal (sideways) swinging / 1-2 s : Noticed by all indoors.
Biscoitos (1.3 km ESE of epicenter) [Map] / Light shaking (MMI IV) / 2-5 s
Serreta (4.7 km NW of epicenter) [Map] / Moderate shaking (MMI V) / rattling, vibrating / 2-5 s : Sound of glass rattling. Dog woke and was bit nervous.
6.4 km SSE of epicenter [Map] / Light shaking (MMI IV) / single lateral shake / 1-2 s
Doze Ribeiras, Terceira / Moderate shaking (MMI V)
Quatro Ribeiras / Light shaking (MMI IV) / 1-2 s
São Bartolomeu / Light shaking (MMI IV) / horizontal (sideways) swinging / 1-2 s
Terra-Chã / Moderate shaking (MMI V) / horizontal (sideways) swinging / 2-5 s
Cinco Ribeiras / not felt
Angra Heroísmo / Moderate shaking (MMI V) / complex motion difficult to describe / 2-5 s
Terra Châ / not felt
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Earlier earthquakes in the same area

Mag. 3.3 earthquake - 4.1 km northeast of Santa Barbara, Angra do Heroísmo Municipality, Azores, Portugal, on 27 Oct 9:56 pm (GMT -1)
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