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Light mag. 3.9 earthquake - South Pacific Ocean, 82 km northwest of Vallenar, Huasco, Atacama, Chile, on Saturday, Mar 18, 2023 at 7:25 pm (GMT -5) -

Light magnitude 3.9 earthquake at 32 km depth

19 Mar 00:32 UTC: First to report: RaspberryShake after 7 minutes.
19 Mar 00:36: Magnitude recalculated from 3.7 to 3.9. Hypocenter depth recalculated from 43.0 to 32.0 km (from 27 to 19.9 mi). Epicenter location corrected by 19 km (12 mi) towards S.

Earthquake details

Date & time	Mar 19, 2023 00:25:26 UTC -
Local time at epicenter	Saturday, Mar 18, 2023 at 7:25 pm (GMT -5)
Status	Confirmed
Magnitude	3.9
Depth	32.0 km
Epicenter latitude / longitude	28.14°S / 71.43°W (South Pacific Ocean, Chile)
Antipode	28.14°N / 108.57°E
Shaking intensity	Light shaking
Felt	1 report
Primary data source	RaspberryShake (RaspberryShake)
Nearest volcano	###NEARESTVOLCANO2###
Nearby towns and cities	82 km (51 mi) NW of Vallenar (pop: 44,900) \| Show on map \| Quakes nearby 138 km (86 mi) SW of Copiapo (pop: 129,300) \| Show on map \| Quakes nearby 197 km (122 mi) N of La Serena (pop: 154,500) \| Show on map \| Quakes nearby 240 km (149 mi) SW of Diego de Almagro (pop: 18,100) \| Show on map \| Quakes nearby 596 km (370 mi) N of Santiago de Chile (pop: 4,837,300) \| Show on map \| Quakes nearby
Weather at epicenter at time of quake	Scattered Clouds 19°C (66 F), humidity: 87%, wind: 9 m/s (18 kts) from SSW
Estimated seismic energy released	4.5 x 10¹⁰ joules (12.4 megawatt hours, equivalent to 10.7 tons of TNT) \| 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
3.9	32 km	Near Coast of Central Chile	RaspberryShake
3.9	32 km	OFFSHORE ATACAMA, CHILE	EMSC

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Seismograms

Seismic station: Llanos de Challe (AC04/C1 network) | Distance from quake: 36 km / 22 mi | Show on map | Station Info

Seismic station Llanos de Challe: 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 (1)

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

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Translate

Freirina chile (53.4 km SE of epicenter) [Map] / Light shaking (MMI IV) / rattling, vibrating / 1-2 s : Sleeping, woke me

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