Mag. 3.9 earthquake - Choapa, 49 km northwest of Illapel, Provincia de Choapa, Coquimbo Region, Chile, on Monday, 21 September 2015 at 06:52 (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 4 days earlier.
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Minor magnitude 3.9 earthquake at 37 km depth
21 Sep 07:18 UTC: First to report: GUG (U. Chile) after 25 minutes.
Magnitude: 3.9
Depth: 36.8 km
Epicenter latitude / longitude: 31.401°S / 71.613°W
(Choapa, Coquimbo Region, Chile)Nearby towns and cities:
49 km (31 mi) WNW of Illapel (Choapa, Coquimbo Region) (pop: 22,800) --> See nearby quakes!
75 km (46 mi) NW of Salamanca (Choapa, Coquimbo Region) (pop: 13,300) --> See nearby quakes!
97 km (60 mi) SSW of Ovalle (Coquimbo Region) (pop: 77,100) --> See nearby quakes!
122 km (76 mi) NNW of La Ligua (Petorca, Valparaíso) (pop: 24,900) --> See nearby quakes!
163 km (101 mi) S of Coquimbo (Coquimbo Region) (pop: 161,300) --> See nearby quakes!
170 km (106 mi) S of La Serena (Coquimbo Region) (pop: 154,500) --> See nearby quakes!
181 km (112 mi) N of Viña del Mar (Valparaíso) (pop: 294,600) --> See nearby quakes!
182 km (113 mi) N of Valparaiso (Valparaíso) (pop: 282,400) --> See nearby quakes!
246 km (153 mi) NNW of Santiago (Santiago Metropolitan) (pop: 4,837,300) --> See nearby quakes!
264 km (164 mi) NNW of Puente Alto (Santiago Metropolitan) (pop: 510,400) --> See nearby quakes!
Primary data source: GUG (U. Chile)
Estimated released energy: 4.5 x 1010 joules (12.4 megawatt hours, equivalent to 10.7 tons of TNT) More info
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.
| Magnitude | Depth | Location | Source |
| M 3.9 | 37 km | 15 km al O de Canela Baja | GUG (U. Chile) |
User reports for this quake (1)
User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
chile / Very weak shaking (MMI II)
Earlier earthquakes in the same area
Mag. 3.9 earthquake - Choapa, 49 km northwest of Illapel, Provincia de Choapa, Coquimbo Region, Chile, on Monday, 21 September 2015 at 06:52 (GMT)
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