Mag. 4.7 earthquake - South Pacific Ocean, 37 km west of Valparaiso, Region de Valparaiso, Chile, on Sunday, 23 April 2017 at 03:02 (GMT)

This quake was likely a foreshock of the 6.6 quake South Pacific Ocean, 11 km west of Valparaiso, Region de Valparaiso, Chile, 24 April 2017 21:38 GMT, which followed after 1 day 19 hours.
Mag. 4.7 earthquake  - South Pacific Ocean, 37 km west of Valparaiso, Region de Valparaiso, Chile, on Sunday, 23 April 2017 at 03:02 (GMT)

Light magnitude 4.7 earthquake at 25 km depth

23 Apr 03:18 UTC: First to report: GUG (U. Chile) after 16 minutes.
Date & time: 23 Apr 2017 03:02:17 UTC
Magnitude: 4.7
Depth: 25.1 km
Epicenter latitude / longitude: 33.071°S / 72.023°W (South Pacific Ocean, Chile)
Nearest volcano: Tupungatito (210 km / 130 mi)
Nearby towns and cities:
37 km (23 mi) W of Valparaiso (pop: 282,400) --> See nearby quakes!
44 km (27 mi) W of Viña del Mar (pop: 294,600) --> See nearby quakes!
54 km (34 mi) W of Quilpué (pop: 130,300) --> See nearby quakes!
61 km (38 mi) W of Villa Alemana (pop: 97,300) --> See nearby quakes!
70 km (43 mi) NW of San Antonio (pop: 85,700) --> See nearby quakes!
71 km (44 mi) W of Limache (Marga Marga) (pop: 35,900) --> See nearby quakes!
75 km (47 mi) WSW of Quillota (pop: 67,800) --> See nearby quakes!
82 km (51 mi) WSW of Hacienda La Calera (pop: 49,100) --> See nearby quakes!
135 km (84 mi) WNW of Santiago (pop: 4,837,300) --> See nearby quakes!
147 km (92 mi) WNW of Puente Alto (pop: 510,400) --> See nearby quakes!
Primary data source: GUG (U. Chile)
Estimated released energy: 7.1 x 1011 joules (197 megawatt hours, equivalent to 169 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 4.725 km38 km al O de ValparaísoGUG (U. Chile)
M 4.920 km OFFSHORE VALPARAISO, CHILEEMSC
M 4.917 km- 37km W of Valparaiso, ChileUSGS

User reports for this quake (3)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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137.5 km ESE of epicenter [Map] / Light shaking (MMI IV) (reported through our app)
Valparaíso (Chile, 38 km E of epicenter) : Fuerte sacudida y fuerte ruido. (reported through EMSC)
Quilpué (Chile, 55 km E of epicenter) : Me gusto que la madre tierra se pronunciará en su día . Feliz día madre Tiera!!! (reported through EMSC)
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Earlier earthquakes in the same area

Mag. 4.7 earthquake - South Pacific Ocean, 37 km west of Valparaiso, Region de Valparaiso, Chile, on Sunday, 23 April 2017 at 03:02 (GMT)
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