Mag. 3.7 earthquake - 92 km north of Iquique, Tarapacá, Chile, on 28 Oct 1:53 am (GMT -3) -

Mag. 3.7 earthquake  - 92 km north of Iquique, Tarapacá, Chile, on 28 Oct 1:53 am (GMT -3)

Minor magnitude 3.7 earthquake at 75 km depth

28 Oct 04:58 UTC: First to report: EMSC after 5 minutes.
28 Oct 05:10: Magnitude recalculated from 3.7 to 3.9. Hypocenter depth recalculated from 62.0 to 75.0 km (from 39 to 47 mi). Epicenter location corrected by 7.7 km (4.8 mi) towards ENE.
28 Oct 05:12: Now using data updates from GUG (U. Chile)
28 Oct 05:28: Magnitude recalculated from 3.9 to 3.7. Hypocenter depth recalculated from 75.1 to 74.5 km (from 47 to 46 mi). Epicenter location corrected by 1 km (0.6 mi) towards N.
Date & time: 28 Oct 2020 04:53:13 UTC -
Local time at epicenter: 28 Oct 1:53 am (GMT -3)
Magnitude: 3.7
Depth: 74.5 km
Epicenter latitude / longitude: 19.449°S / 69.818°W (Chile)
Nearest volcano: Isluga (117 km / 73 mi)
Nearby towns and cities:
92 km (57 mi) NNE of Iquique (pop: 227,500)
120 km (74 mi) SSE of Arica (pop: 186,000)
166 km (103 mi) SSE of Tacna (Peru) (pop: 280,100)
258 km (160 mi) SE of Ilo (Peru) (pop: 53,500)
297 km (184 mi) N of Tocopilla (pop: 24,500)
347 km (216 mi) NNW of Calama (pop: 143,100)
449 km (279 mi) WSW of Cochabamba (Bolivia) (pop: 900,400)
1560 km (969 mi) N of Santiago (pop: 4,837,300)
Weather at epicenter at time of quake:
Clear Sky 10.1°C (50 F), humidity: 60%, wind: 0 m/s (1 kts) from NNE
Primary data source: GUG (U. Chile)
Estimated released energy: 2.2 x 1010 joules (6.22 megawatt hours, equivalent to 5.35 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.
M 3.775 km44 Km Al O De Camiña, ChileGUG (U. Chile)
M 3.774 km92 Km NNE of Iquique, ChileEMSC

User reports for this quake (7)

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.
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Rancagua / Moderate shaking (MMI V) / 10-15 s : Fue largo y con harto ruido, pero sentí que paso por mi dormitorio y siguió avanzando en línea recta, fue extraño, nuevo...
Yumbel (1981.2 km S of epicenter) [Map] / Very weak shaking (MMI II)
1567.3 km S of epicenter [Map] / Moderate shaking (MMI V) / rattling, vibrating / 15-20 s
Rancagua, la gamboina / Very strong shaking (MMI VII)
Santiago de Chile / Moderate shaking (MMI V) / single lateral shake / 10-15 s : Me despertó el temblor, duro poco pero me generó miedo
Villa Alegre, Chile / Moderate shaking (MMI V) / 5-10 s
Rancagua / Light shaking (MMI IV) / rattling, vibrating / 2-5 s
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Mag. 3.7 earthquake - 92 km north of Iquique, Tarapacá, Chile, on 28 Oct 1:53 am (GMT -3)

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