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Moderate mag. 4.7 earthquake - South Pacific Ocean, 30 km southwest of Coquimbo, Provincia de Elqui, Coquimbo Region, Chile, on Monday, Jan 18, 2021 at 2:45 am (GMT -3)

Moderate mag. 4.7 earthquake - South Pacific Ocean, 30 km southwest of Coquimbo, Provincia de Elqui, Coquimbo Region, Chile, on Monday, Jan 18, 2021 at 2:45 am (GMT -3) Moderate mag. 4.7 earthquake - South Pacific Ocean, 30 km southwest of Coquimbo, Provincia de Elqui, Coquimbo Region, Chile, on Monday, Jan 18, 2021 at 2:45 am (GMT -3)

Moderate magnitude 4.7 earthquake at 42 km depth

18 Jan 05:54 UTC: First to report: EMSC after 8 minutes.
18 Jan 06:02: Magnitude recalculated from 5.1 to 4.9. Hypocenter depth recalculated from 5.0 to 20.0 km (from 3.1 to 12.4 mi). Epicenter location corrected by 22 km (14 mi) towards W.
18 Jan 06:08: Now using data updates from GUG (U. Chile)
Update Mon, 18 Jan 2021, 06:00

Significant magnitude 5.1 quake hits 27 km southwest of Coquimbo, Chile early morning

5.1 quake 18 Jan 2:45 am (GMT -3)
5.1 quake 18 Jan 2:45 am (GMT -3)
A magnitude 5.1 earthquake near Coquimbo, Provincia de Elqui, Coquimbo Region, Chile, was reported only 14 minutes ago by the European-Mediterranean Seismological Centre (EMSC), considered one of the key international agencies that monitor seismic activity worldwide. The earthquake occurred at a very shallow depth of 5 km beneath the epicenter early morning on Monday 18 January 2021 at 2:45 am local time. 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.
Based on the preliminary seismic data, the quake was probably felt by many people in the area of the epicenter. It should not have caused significant damage, other than objects falling from shelves, broken windows, etc.
In Coquimbo (pop. 161,300) located 27 km from the epicenter, and La Serena (pop. 154,500) 37 km away, the quake should have been felt as light shaking.
Weak shaking might have been felt in Ovalle (pop. 77,100) located 67 km from the epicenter, Vicuña (pop. 13,500) 83 km away, and Monte Patria (pop. 13,900) 89 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 & timeJan 18, 2021 05:45:57 UTC
Local time at epicenterMonday, Jan 18, 2021 at 2:45 am (GMT -3)
Depth41.5 km
Epicenter latitude / longitude30.146°S / 71.564°W (South Pacific Ocean, Chile)
Antipode30.146°N / 108.436°E
Shaking intensityVery weak shaking
Felt1 report
Primary data sourceGUG (U. Chile)
Nearby towns and cities30 km (19 mi) SW of Coquimbo (pop: 161,300) | Show on map | Quakes nearby
41 km (25 mi) SW of La Serena (pop: 154,500) | Show on map | Quakes nearby
62 km (38 mi) NW of Ovalle (pop: 77,100) | Show on map | Quakes nearby
83 km (51 mi) W of Vicuña (pop: 13,500) | Show on map | Quakes nearby
84 km (52 mi) NW of Monte Patria (pop: 13,900) | Show on map | Quakes nearby
170 km (105 mi) NNW of Illapel (Choapa) (pop: 22,800) | Show on map | Quakes nearby
191 km (119 mi) SSW of Vallenar (pop: 44,900) | Show on map | Quakes nearby
322 km (200 mi) N of Valparaiso (pop: 282,400) | Show on map | Quakes nearby
378 km (235 mi) NNW of Santiago de Chile (pop: 4,837,300) | Show on map | Quakes nearby
397 km (246 mi) NNW of Puente Alto (pop: 510,400) | Show on map | Quakes nearby
Weather at epicenter at time of quakeOvercast Clouds 15°C (59 F), humidity: 88%, wind: 2 m/s (3 kts) from NW
Estimated seismic energy released7.1 x 1011 joules (197 megawatt hours, equivalent to 169 tons of TNT) | about seismic energy
Show interactive Map
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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.
4.742 km14 Km Al NO De Tongoy, ChileGUG (U. Chile)
4.933 km32 Km SW of Coquimbo, ChileUSGS
4.625 kmNear Coast of Central ChileGFZ
4.4106 kmNear Coast of Central ChileUSP


Seismic station: Fray Jorge, IV Region Coquimbo (CO06/C1 network) | Distance from quake: 59 km / 37 mi | Show on map | Station Info
Seismic station Fray Jorge, IV Region Coquimbo: 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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User reports for this quake (2)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
Santiago (374.3 km SSE of epicenter) [Map] / not felt (reported through our app)
Lo Prado, Provincia de Santiago, Santiago Metropolitan (368.2 km SSE of epicenter) [Map] / Very weak shaking (MMI II) / horizontal (sideways) swinging / 15-20 s (reported through our app)

Earlier earthquakes in the same area

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