Mag. 4.0 earthquake - South Pacific Ocean, 81 km southwest of Ovalle, Provincia de Limari, Coquimbo Region, Chile, on Wednesday, 21 October 2015 at 22:04 (GMT)

This quake was likely an aftershock of the 7.8 quake Choapa, 36 km west of Illapel, Provincia de Choapa, Coquimbo Region, Chile, 16 September 2015 22:54 GMT, which had occurred 5 weeks earlier.
Mag. 4.0 earthquake - South Pacific Ocean, 81 km southwest of Ovalle, Provincia de Limari, Coquimbo Region, Chile, on Wednesday, 21 October 2015 at 22:04 (GMT)

Light magnitude 4.0 earthquake at 42 km depth

21 Oct 22:20 UTC: First to report: GUG (U. Chile) after 16 minutes.
Oct 21 22:50: Magnitude recalculated from 3.9 to 4.0.
Hypocenter depth recalculated from 41.9 to 42.0 km.
Date & time: 21 Oct 2015 22:04:31 UTC
Magnitude: 4
Depth: 42.0 km
Epicenter latitude / longitude: 31.168°S / 71.737°W (South Pacific Ocean, Chile)
Nearby towns and cities:
75 km (46 mi) NW of Illapel (Choapa) (pop: 22,800) --> See nearby quakes!
81 km (51 mi) SW of Ovalle (pop: 77,100) --> See nearby quakes!
91 km (57 mi) SW of Monte Patria (pop: 13,900) --> See nearby quakes!
140 km (87 mi) SSW of Coquimbo (pop: 161,300) --> See nearby quakes!
148 km (92 mi) SSW of La Serena (pop: 154,500) --> See nearby quakes!
151 km (94 mi) NNW of La Ligua (Petorca) (pop: 24,900) --> See nearby quakes!
207 km (129 mi) N of Viña del Mar (pop: 294,600) --> See nearby quakes!
208 km (129 mi) N of Valparaiso (pop: 282,400) --> See nearby quakes!
274 km (170 mi) NNW of Santiago (pop: 4,837,300) --> See nearby quakes!
293 km (182 mi) NNW of Puente Alto (pop: 510,400) --> See nearby quakes!
Primary data source: GUG (U. Chile)
Estimated released energy: 6.3 x 1010 joules (17.5 megawatt hours, equivalent to 15.1 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 4.042 km37 km al NO de Canela BajaGUG (U. Chile)

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 yet. If you felt it be the first to report it!
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Earlier earthquakes in the same area

Mag. 4.0 earthquake - South Pacific Ocean, 81 km southwest of Ovalle, Provincia de Limari, Coquimbo Region, Chile, on Wednesday, 21 October 2015 at 22:04 (GMT)
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