M5.6 earthquake 78 km SW of Puerto Madero, Chiapas, Mexico
A magnitude 5.6 earthquake struck 78 km SW of Puerto Madero, Chiapas, Mexico at 06:28 local time (12:28 UTC) on 2 Sept 2026, at a depth of 11 km, according to USGS.
Data: USGS · updated 2026-09-24 17:46 UTC · reviewed
- Magnitude
- 5.6moderate
moment magnitude (W phase) (mww) - Depth
- 11 km
- Status
- Reviewed
- Origin time
- 2026-09-02 12:28:30 UTC
- Local: 2 Sept 2026, 06:28:30 (America/Mexico City)
- Epicentre
- 14.323° N, 93.016° W
Circles show this event and others within 80 km from 7 days before to 30 days after. Lines: plate boundaries and GEM active faults. Open on the live map
Nearby places
| Place | Distance | Est. shaking |
|---|---|---|
| Puerto MaderoChiapas, Mexico · pop. 9,557 | 78 km | IVLight |
| MazatánChiapas, Mexico · pop. 6,838 | 85 km | IVLight |
| TapachulaChiapas, Mexico · pop. 353,706 | 104 km | IVLight |
| HuixtlaChiapas, Mexico · pop. 32,033 | 109 km | IVLight |
| MalacatánSan Marcos, Guatemala · pop. 92,816 | 122 km | IIIWeak |
| CoatepequeQuetzaltenango, Guatemala · pop. 105,415 | 131 km | IIIWeak |
| MixcoGuatemala, Guatemala · pop. 465,773 | 261 km | IIWeak |
| Villa NuevaGuatemala, Guatemala · pop. 618,397 | 262 km | IIWeak |
Shaking is an estimate from the intensity prediction equation of Allen, Wald & Worden (2012), not an observation. Local ground and buildings can change it by a level or more. Likely felt out to about 243 km.
Every agency's solution
Agencies locate earthquakes with their own stations and methods, so their numbers differ. We match reports of the same event by time, distance and magnitude and show them side by side. The headline uses USGS, which has been reviewed by an analyst.
| Agency | Magnitude | Depth | Epicentre | Time offset | Status |
|---|---|---|---|---|---|
| USGSheadlineUSGS NEIC via U.S. Geological Survey | 5.6 mww | 11 km | 14.32° N, 93.02° W | – | Reviewed |
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How big was it?
Felt by most people over a wide area. Can damage poorly built structures close to the epicentre.
It released roughly the energy of 3.8 kt of TNT. Magnitude is logarithmic: each whole step means about 32 times more energy and 10 times larger waves on a seismogram. Depth matters too: at 11 km this was a shallow earthquake, which is felt more strongly at the surface than a deeper one of the same size.
M5.6 releases about 32× the energy of M4.6, and its waves are about 10× taller on a seismogram. Energy: 3.8 kt of TNT vs 120 t of TNT.
Each square is the energy of one M4.6. Energy from log₁₀E = 1.5M + 4.8.
Aftershocks and nearby activity
19 later earthquakes within 80 km; the largest was M5.3 67 days ago. 3 in the 7 days before. Aftershock rates usually fall off roughly in proportion to 1/time.
Mainshock M5.6
19 later earthquakes nearby. Aftershock rates typically fall off roughly as 1/time (Omori's law).
| Time after mainshock (hours) | Magnitude | Depth (km) |
|---|---|---|
| 1.25 | 4.3 | 10 |
| 86.47 | 5.3 | 10 |
| 176.67 | 4.3 | 35 |
| 185.67 | 4.4 | 10 |
| 193.01 | 4.5 | 10 |
| 209.27 | 4.2 | 10 |
| 225.05 | 4.0 | 35 |
| 235.82 | 4.2 | 35 |
| 298.24 | 4.2 | 10 |
| 317.26 | 4.1 | 10 |
| 318.65 | 4.2 | 10 |
| 327.28 | 5.0 | 10 |
| 384.74 | 4.6 | 10 |
| 465.56 | 4.4 | 10 |
| 499.92 | 4.2 | 10 |
| 529.57 | 4.5 | 10 |
| 581.03 | 4.2 | 10 |
| 595.87 | 4.0 | 67 |
| 691.77 | 4.1 | 54 |
- 5.3113 km SW of Puerto Madero, Chiapas, Mexico09-06 02:56
- 5.072 km SW of Champerico, Retalhuleu, Guatemala09-16 03:45
- 4.6132 km WSW of Puerto Madero, Chiapas, Mexico09-18 13:12
- 4.587 km SW of Puerto Madero, Chiapas, Mexico09-10 13:29
- 4.5104 km SW of Puerto Madero, Chiapas, Mexico09-24 14:02
- 4.4107 km SW of Puerto Madero, Chiapas, Mexico09-10 06:08
- 4.4119 km SW of Brisas Barra de Suchiate, Chiapas, Mexico09-21 22:01
- 4.3106 km WSW of Puerto Madero, Chiapas, Mexico09-02 13:43
- 4.3103 km SW of Puerto Madero, Chiapas, Mexico09-09 21:08
- 4.2131 km SW of Puerto Madero, Chiapas, Mexico09-11 05:44
- 4.260 km SW of Brisas Barra de Suchiate, Chiapas, Mexico09-12 08:17
- 4.2104 km WSW of Puerto Madero, Chiapas, Mexico09-14 22:42
- 4.240 km WSW of Puerto Madero, Chiapas, Mexico09-15 19:07
- 4.2114 km SW of Brisas Barra de Suchiate, Chiapas, Mexico09-23 08:23
- 4.2119 km WSW of Puerto Madero, Chiapas, Mexico09-26 17:30
- 4.1110 km SW of Puerto Madero, Chiapas, Mexico09-15 17:44
- 4.151 km W of Puerto Madero, Chiapas, Mexico10-01 08:14
- 4.071 km WSW of Puerto Madero, Chiapas, Mexico09-11 21:31
- 4.017 km S of Puerto Madero, Chiapas, Mexico09-27 08:20
Did you feel it?
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Reports on SeismoAtlas
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Event id us7000tdmp. First recorded here 28 Sept 2026, 17:32:13 UTC. Solutions: USGS (usgs:us7000tdmp). Cite as: SeismoAtlas, “M5.6 earthquake 78 km SW of Puerto Madero, Chiapas, Mexico”, https://seismoatlas.com/earthquake/us7000tdmp-m5-6-earthquake-78-km-sw-of-puerto-madero-chiapas-mexico, data from USGS.
JSON: /api/v1/events/us7000tdmp. SeismoAtlas is not an official warning service.