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Weak mag. 2.1 earthquake - São Jorge, 1.5 km northeast of Velas, Azores, Portugal, on Saturday, Mar 18, 2023 at 2:30 pm (GMT -1) -

Weak magnitude 2.1 earthquake at 8 km depth

18 Mar 15:39 UTC: First to report: IPMA after 8 minutes.

Earthquake details

Date & time	Mar 18, 2023 15:30:44 UTC -
Local time at epicenter	Saturday, Mar 18, 2023 at 2:30 pm (GMT -1)
Status	Confirmed
Magnitude	2.1
Depth	8.0 km
Epicenter latitude / longitude	38.693°N / 28.199°W (Velas Municipality, Azores, Portugal)
Antipode	38.693°S / 151.801°E
Shaking intensity	Very weak shaking
Felt	0 reports
Primary data source	IPMA (Portuguese Institute for Sea and Atmosphere (Instituto Português do Mar e da Atmosfera, IPMA))
Nearest volcano	São Jorge (9 km / 6 mi)
Nearby towns and cities	2 km (1 mi) NE of Velas (pop: 1,980) \| Show on map \| Quakes nearby 19 km (12 mi) WNW of Calheta (pop: 3,770) \| Show on map \| Quakes nearby 22 km (14 mi) NNE of San Roque (pop: 3,710) \| Show on map \| Quakes nearby 33 km (21 mi) N of Lajes (pop: 4,710) \| Show on map \| Quakes nearby 41 km (25 mi) ENE of Horta (Azoren) (pop: 6,570) \| Show on map \| Quakes nearby 47 km (29 mi) SSW of Santa Cruz da Graciosa (pop: 1,780) \| Show on map \| Quakes nearby 85 km (53 mi) W of Angra do Heroismo (Angra do Heroísmo Municipality) (pop: 12,000) \| Show on map \| Quakes nearby 98 km (61 mi) W of Praia da Vitoria (Praia da Vitória) (pop: 6,060) \| Show on map \| Quakes nearby
Weather at epicenter at time of quake	Overcast Clouds 15.8°C (60 F), humidity: 80%, wind: 7 m/s (13 kts) from S
Estimated seismic energy released	8.9 x 10⁷ joules (24.8 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
2.1	8 km	Portugal: Ilha De S. Jorge (W)	IPMA
1.8	0 km	Portugal: S. Jorge	IVAR (AZO)

Most recent quakes Top 20 past 24 hrs Quakes in Portugal Azores

Seismograms

Seismic station: (ROSA/PM network) | Distance from quake: 5 km / 3 mi | Show on map | Station Info

Seismic station : 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

User reports for this quake

At magnitude 2.1, such a quake wouldn't normally be felt by people except under very favorable conditions.

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.

There are no user reports for this quake.

Earlier earthquakes in the same area

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