Strong mag. 6.2 earthquake - Near Coast of Central Chile on Friday, 18 September 2015

Very strong mag. 6.3 earthquake - South Pacific Ocean, 90 km northwest of Valparaiso, Region de Valparaiso, Chile, on Friday, September 18, 2015 at 09:10 (GMT)

This quake was likely an aftershock of the 7.8 quake Choapa, 36 km west of Illapel, Provincia de Choapa, Coquimbo Region, Chile, September, 16 2015 22:54 GMT, which had occurred 1 day 10 hours earlier.
Very strong mag. 6.3 earthquake - South Pacific Ocean, 90 km northwest of Valparaiso, Region de Valparaiso, Chile, on Friday, September 18, 2015 at 09:10 (GMT)

Very strong magnitude 6.3 earthquake at 9 km depth

18 Sep 10:17 UTC: First to report: GeoAu after 1 hour and 6 minutes.
Sep 21 00:17: Magnitude recalculated from 6.2 to 6.3.
Hypocenter depth recalculated from 15.0 to 9.0 km.
Date & time: Sep 18, 2015 09:10:44 UTC
Magnitude: 6.3
Depth: 9.0 km
Epicenter latitude / longitude: 32.408°S / 72.235°W (South Pacific Ocean, Chile)
Antipode: 32.408°N / 107.765°E
Nearest volcano: Tupungatito (206 km / 128 mi)
Nearby towns and cities:
90 km (56 mi) NW of Valparaiso (pop: 282,400) --> See nearby quakes!
94 km (58 mi) NW of Viña del Mar (pop: 294,600) --> See nearby quakes!
94 km (59 mi) W of La Ligua (Petorca) (pop: 24,900) --> See nearby quakes!
103 km (64 mi) NW of Quilpué (pop: 130,300) --> See nearby quakes!
104 km (65 mi) WNW of Hacienda La Calera (pop: 49,100) --> See nearby quakes!
106 km (66 mi) WNW of Quillota (pop: 67,800) --> See nearby quakes!
107 km (67 mi) NW of Villa Alemana (pop: 97,300) --> See nearby quakes!
144 km (90 mi) NNW of San Antonio (pop: 85,700) --> See nearby quakes!
189 km (117 mi) NW of Santiago (pop: 4,837,300) --> See nearby quakes!
205 km (127 mi) NW of Puente Alto (pop: 510,400) --> See nearby quakes!
Primary data source: GeoAu (Geoscience Australia )
Estimated released energy: 1.8 x 1014 joules (49.4 gigawatt hours, equivalent to 42502 tons of TNT or 2.7 atomic bombs!) 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.
6.39 kmNW of Valparaiso, ChileGeoAu
6.033 km58 km al O de Los VilosGUG (U. Chile)

User reports for this quake (2)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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Santiago / Very strong shaking (MMI VII) : Very short one.  
Mexicali / Moderate shaking (MMI V)
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