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Mag. 4.7 earthquake - 62 km north of Calama, Provincia de El Loa, Antofagasta, Chile, on Friday, May 7, 2021 11:01 am (Santiago time)

Light magnitude 4.7 earthquake at 120 km depth

7 May 15:06 UTC: First to report: GFZ after 4 minutes.
7 May 15:08: Magnitude recalculated from 5.0 to 4.8. Hypocenter depth recalculated from 107.0 to 113.0 km (from 66 to 70 mi). Epicenter location corrected by 5.3 km (3.3 mi) towards ENE.
7 May 15:18: Now using data updates from GUG (U. Chile)
7 May 21:24: Hypocenter depth recalculated from 119.3 to 119.6 km (from 74 to 74 mi).

Update Fri, 7 May 2021, 15:12

Magnitude 4.8 earthquake strikes near Calama, Provincia de El Loa, Antofagasta, Chile

4.8 quake 7 May 11:01 am (GMT -4)

The German Research Centre for Geosciences (GFZ) reported a magnitude 4.8 quake in Chile near Calama, Provincia de El Loa, Antofagasta, only 10 minutes ago. The earthquake hit in the morning on Friday 7 May 2021 at 11:01 am local time at an intermediate depth of 113 km. The exact magnitude, epicenter, and depth of the quake might be revised within the next few hours or minutes as seismologists review data and refine their calculations, or as other agencies issue their report.
Our monitoring service identified a second report from the European-Mediterranean Seismological Centre (EMSC) which listed the quake at magnitude 4.9.
Towns or cities near the epicenter where the quake might have been felt as very weak shaking include Calama (pop. 143,100) located 63 km from the epicenter, and San Pedro de Atacama (pop. 2,000) 114 km away.
VolcanoDiscovery will automatically update magnitude and depth if these change and follow up if other significant news about the quake become available. If you're in the area, please send us your experience through our reporting mechanism, either online or via our mobile app. This will help us provide more first-hand updates to anyone around the globe who wants to know more about this quake.

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Earthquake details

Date & time	May 7, 2021 15:01:40 UTC
Local time at epicenter	Friday, May 7, 2021 11:01 am (America/Santiago GMT -4)
Status	Confirmed
Magnitude	4.7
Depth	119.6 km
Epicenter latitude / longitude	21.938°S / 68.694°W Provincia de El Loa, Antofagasta, Chile
Antipode	21.938°N / 111.306°E
Shaking intensity	Weak shaking near epicenter
Felt	0 reports
Primary data source	CSN (National Seismological Center (Centro Sismológico Nacional))
Nearest volcano	San Pedro (24 km / 15 mi)
Weather at epicenter at time of quake	Clear Sky 19°C (66 F), humidity: 14%, wind: 3 m/s (5 kts) from ENE
Estimated seismic energy released	7.1 x 10¹¹ joules (197 megawatt hours, equivalent to 169 tons of TNT) \| about seismic energy

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Nearby places

Distance	Place	Max. shaking intensity(*)	Region	Country
62 km (39 mi) SSW of epicenter	Calama (pop: 143,100)	III Weak	Provincia de El Loa, Antofagasta	Chile
120 km (74 mi) SSE of epicenter	San Pedro de Atacama (pop: 2,000)	II Very weak	Provincia de El Loa, Antofagasta	Chile
156 km (97 mi) W of epicenter	Tocopilla (pop: 24,500)	II Very weak	Antofagasta	Chile
244 km (152 mi) NW of epicenter	Iquique (pop: 191,500)	II Very weak	Tarapaca	Chile
258 km (161 mi) SW of epicenter	Antofagasta (pop: 309,800)	II Very weak	Antofagasta	Chile
403 km (250 mi) NE of epicenter	Ciudad Potosi (pop: 141,300)	I Not felt	Departamento de Potosi	Bolivia
420 km (261 mi) NNW of epicenter	Arica (pop: 186,000)	I Not felt	Region de Arica y Parinacota	Chile
429 km (266 mi) SE of epicenter	Jujuy (pop: 305,900)	I Not felt	Departamento de Doctor Manuel Belgrano, Jujuy	Argentina
461 km (287 mi) SE of epicenter	Salta (pop: 512,700)	I Not felt	Departamento Capital, Salta	Argentina
482 km (299 mi) NE of epicenter	Sucre (pop: 224,800)	I Not felt	Chuquisaca	Bolivia

Notes:
(*) Shaking intensity according to the Modified Mercalli Intensity Scale (MMI) and estimated using seismic models.

Compare Quake Data

Data for the same earthquake as reported by different agencies

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	Time GMT	Epicenter	Agency
4.7	120 km (74 mi)	2021-05-7 15:01:40	64 Km Al NE De Calama, Chile	CSN (National Seismological Center (Centro Sismológico Nacional))
4.7	119 km (74 mi)	2021-05-7 15:01:39	ANTOFAGASTA, CHILE 0.7 km (0.4 mi) epicenter difference with GUG (U. Chile)	EMSC (European-Mediterranean Seismological Centre)
4.8	113 km (70 mi)	2021-05-7 15:01:40	Chile-Bolivia Border Region 8 km (5 mi) epicenter difference with GUG (U. Chile)	GFZ (German Research Centre for Geosciences)
4.6	117 km (73 mi)	2021-05-7 15:01:40	Chile-Bolivia Border Region 7.1 km (4.4 mi) epicenter difference with GUG (U. Chile)	USGS (United States Geological Survey)
5.1	50 km (31 mi)	2021-05-7 15:01:30	Northern Chile 39 km (24 mi) epicenter difference with GUG (U. Chile)	USP

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Seismograms

Seismic station: SAN PEDRO DE ATACAMA (AF01/C1 network) | Distance from quake: 125 km / 77 mi | Show on map | Station Info

Seismic station SAN PEDRO DE ATACAMA: 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: 0.2-10.0 Hz. Source: IRIS Buffer of Uniform Data (BUD) webtool

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Seismic station SAN PEDRO DE ATACAMA: horizontal (E-W) movement plot around time of quake (source: IRIS/BUD)

Seismic station SAN PEDRO DE ATACAMA: 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: Daracena (TA01/C1 network) | Distance from quake: 217 km / 135 mi | Show on map | Station Info

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

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

Seismic station Daracena: 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: Surire (AP02/C1 network) | Distance from quake: 346 km / 215 mi | Show on map | Station Info

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

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

Seismic station Surire: 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: Bahia Inglesa (AC07/C1 network) | Distance from quake: 617 km / 384 mi | Show on map | Station Info

Seismic station Bahia Inglesa: 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: 0.2-5.0 Hz. Source: IRIS Buffer of Uniform Data (BUD) webtool

Seismic station Bahia Inglesa: horizontal (E-W) movement plot around time of quake (source: IRIS/BUD)

Seismic station Bahia Inglesa: 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: Los Peladeros (CO04/C1 network) | Distance from quake: 1146 km / 712 mi | Show on map | Station Info

Seismic station Los Peladeros: 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: 0.2-5.0 Hz. Source: IRIS Buffer of Uniform Data (BUD) webtool

Seismic station Los Peladeros: horizontal (E-W) movement plot around time of quake (source: IRIS/BUD)

Seismic station Los Peladeros: 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

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

There are no user reports for this quake.

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