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Weak mag. 3.6 earthquake - 59 km northwest of Matias Romero Avendaño, Oaxaca, Mexico, on Monday, Jan 30, 2023 at 10:03 pm (GMT -6) -

Weak magnitude 3.6 earthquake at 104 km depth

31 Jan 14:07 UTC: First to report: SSN after 10 hours.

Earthquake details

Date & time	Jan 31, 2023 04:03:37 UTC -
Local time at epicenter	Monday, Jan 30, 2023 at 10:03 pm (GMT -6)
Status	Confirmed
Magnitude	3.6
Depth	104.3 km
Epicenter latitude / longitude	17.23°N / 95.46°W (San Juan Mazatlan, Oaxaca, Mexico)
Antipode	17.23°S / 84.54°E
Shaking intensity	Very weak shaking
Felt	0 reports
Primary data source	SSN (Servicio Sismológico Nacional)
Nearest volcano	San Martín (152 km / 94 mi)
Nearby towns and cities	2 km (2 mi) NW of Tierra Negra (pop: 629) \| Show on map \| Quakes nearby 15 km (9 mi) SSW of Jaltepec de Candayoc (pop: 1,770) \| Show on map \| Quakes nearby 22 km (14 mi) N of Mazatlan (pop: 1,790) \| Show on map \| Quakes nearby 25 km (15 mi) S of Maria Lombardo de Caso (pop: 3,860) \| Show on map \| Quakes nearby 35 km (22 mi) ENE of San Juan Cotzocon (pop: 3,700) \| Show on map \| Quakes nearby 59 km (37 mi) NW of Matias Romero Avendaño (Matías Romero Avendaño) (pop: 18,900) \| Show on map \| Quakes nearby 136 km (84 mi) E of Oaxaca (pop: 255,000) \| Show on map \| Quakes nearby 458 km (285 mi) ESE of Mexico (Ciudad de México) (pop: 12,294,200) \| Show on map \| Quakes nearby
Weather at epicenter at time of quake
Estimated seismic energy released	1.6 x 10¹⁰ joules (4.4 megawatt hours, equivalent to 3.79 tons of TNT) \| about seismic energy

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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.	Depth	Location	Source
3.6	104 km	Mexico: 59 Km Al NOROESTE De MATIAS ROMERO, OAX	SSN
3.6	104 km	Oaxaca, Mexico	RaspberryShake

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Seismograms

Seismic station: TLAPA (TLIG/MX network) | Distance from quake: 332 km / 206 mi | Show on map | Station Info

Seismic station TLAPA: vertical movement plot around time of quake (source: IRIS/BUD)

Seismogram (vertical component) around time of quake. Thin dotted red line indicates time of quake. Seismic waves arrive some time later, depending on distance. Bandpass filter applied: 0.5-10.0 Hz. Source: IRIS Buffer of Uniform Data (BUD) webtool

User reports for this quake

User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.

There are no user reports for this quake.

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