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Moderate mag. 4.0 earthquake - North Pacific Ocean, 29 km south of Atoyac de Alvarez, Guerrero, Mexico, on Sunday, Mar 19, 2023 at 1:23 am (GMT -6) -

Moderate magnitude 4.0 earthquake at 10 km depth

19 Mar 07:56 UTC: First to report: RaspberryShake after 32 minutes.
19 Mar 08:21: Now using data updates from SSN

Earthquake details

Date & time	Mar 19, 2023 07:23:50 UTC -
Local time at epicenter	Sunday, Mar 19, 2023 at 1:23 am (GMT -6)
Status	Confirmed
Magnitude	4
Depth	10.0 km
Epicenter latitude / longitude	16.95°N / 100.37°W (North Pacific Ocean, Mexico)
Antipode	16.95°S / 79.63°E
Shaking intensity	Light shaking near epicenter
Felt	0 reports
Primary data source	SSN (Servicio Sismológico Nacional)
Nearest volcano	Nevado de Toluca (249 km / 155 mi)
Nearby towns and cities	11 km (7 mi) SW of Pozuelo (pop: 35) \| Show on map \| Quakes nearby 20 km (12 mi) S of Cacalutla (pop: 2,010) \| Show on map \| Quakes nearby 20 km (12 mi) SE of Hacienda de Cabañas (pop: 2,010) \| Show on map \| Quakes nearby 29 km (18 mi) SSE of Atoyac de Alvarez (Atoyac de Álvarez) (pop: 21,400) \| Show on map \| Quakes nearby 31 km (19 mi) WSW of Coyuca de Benitez (Coyuca de Benítez) (pop: 13,600) \| Show on map \| Quakes nearby 41 km (25 mi) SE of Técpan de Galeana (pop: 15,100) \| Show on map \| Quakes nearby 50 km (31 mi) WNW of Acapulco (pop: 673,500) \| Show on map \| Quakes nearby 305 km (190 mi) SSW of Mexico (pop: 12,294,200) \| Show on map \| Quakes nearby
Weather at epicenter at time of quake
Estimated seismic energy released	6.3 x 10¹⁰ joules (17.5 megawatt hours, equivalent to 15.1 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
4.0	10 km	Mexico: 29 Km Al SUR De ATOYAC DE ALVAREZ, GRO	SSN
4.0	10 km	OFFSHORE GUERRERO, MEXICO	EMSC
4.0	10 km	Near Coast of Guerrero, Mexico	RaspberryShake

Most recent quakes Top 20 past 24 hrs Quakes in Mexico

Seismograms

Seismic station: TLAPA (TLIG/MX network) | Distance from quake: 203 km / 126 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: 0.2-10.0 Hz. Source: IRIS Buffer of Uniform Data (BUD) webtool

User reports for this quake (1)

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

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Puerto Marquez Acapulco Mexico / not felt

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