Light mag. 4.5 earthquake - 12 km southeast of Atoyac de Alvarez, Guerrero, Mexico, on Wednesday, Oct 13, 2021 1:38 pm (GMT -5) -

This quake was likely an aftershock of the 7.1 quake North Pacific Ocean, 8 km south of Acapulco de Juarez, Guerrero, Mexico, Sep 7, 2021 8:47 pm (GMT -5), which had occurred 5 weeks earlier.
Light mag. 4.5 earthquake - 12 km southeast of Atoyac de Alvarez, Guerrero, Mexico, on Wednesday, Oct 13, 2021 1:38 pm (GMT -5)

Light magnitude 4.5 earthquake at 37 km depth

13 Oct 18:45 UTC: First to report: VolcanoDiscovery after 7 minutes.
13 Oct 18:56: Now using data updates from SSN
Date & time: Oct 13, 2021 18:38:21 UTC -
Local time at epicenter: Wednesday, Oct 13, 2021 1:38 pm (GMT -5)
Magnitude: 4.5
Depth: 37.0 km
Epicenter latitude / longitude: 17.12°N / 100.37°W (Atoyac de Alvarez, Guerrero, Mexico)
Antipode: 17.12°S / 79.63°E
Nearest volcano: Nevado de Toluca (244 km / 152 mi)
Nearby towns and cities:
1 km (1 mi) S of Charco Largo (pop: 13) --> See nearby quakes!
11 km (7 mi) ENE of Hacienda de Cabañas (pop: 2,010) --> See nearby quakes!
12 km (7 mi) SE of Atoyac de Alvarez (Atoyac de Álvarez) (pop: 21,400) --> See nearby quakes!
16 km (10 mi) NW of El Papayo (pop: 2,250) --> See nearby quakes!
29 km (18 mi) WSW of Tepetixtla (pop: 3,640) --> See nearby quakes!
30 km (19 mi) ESE of Técpan de Galeana (pop: 15,100) --> See nearby quakes!
33 km (20 mi) WNW of Coyuca de Benitez (Coyuca de Benítez) (pop: 13,600) --> See nearby quakes!
58 km (36 mi) WNW of Acapulco de Juarez (pop: 673,500) --> See nearby quakes!
104 km (64 mi) WSW of Chilpancingo (pop: 187,300) --> See nearby quakes!
288 km (179 mi) SSW of Mexico City (pop: 12,294,200) --> See nearby quakes!
Weather at epicenter at time of quake:
Clear Sky 31°C (88 F), humidity: 68%, wind: 3 m/s (6 kts) from SW
Primary data source: SSN (Servicio Sismológico Nacional)
Estimated released energy: 3.5 x 1011 joules (98.6 megawatt hours, equivalent to 84.8 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.
Mag.DepthLocationSource
4.537 kmMexico: 12 Km Al SURESTE De ATOYAC DE ALVAREZ, GROSSN
4.537 kmGUERRERO, MEXICOEMSC

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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Pedregal De Cantaluna. (40.5 km ESE of epicenter) [Map] / Moderate shaking (MMI V) / single lateral shake / 2-5 s : watching tv and the house shook violently. heard a rumble for a few seconds before it hit. a solid shake then softer with rumble | 3 users found this interesting.  
Coyuca de Benítez / Very weak shaking (MMI II) / rattling, vibrating / 5-10 s
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