EMSC · October 21, 2026
Magnitude 4.2 earthquake near Acayucan, Mexico
A magnitude 4.2 earthquake was recorded near 8 km WNW of Medias Aguas, Mexico on Oct 21, 2026, 11:03 PM (local time at the epicentre — CST, UTC-6), at a depth of about 130.8 km, according to EMSC.
EMSCIntermediate (70–300 km)Reviewed by a seismologist
Updated 2026-10-22 08:58 UTC
The full record
- Magnitude
- M 4.2 · m
- Location
- 8 km WNW of Medias Aguas, Mexico
- Local time at the epicentre
- Oct 21, 2026, 11:03 PM — CST, UTC-6
- Time (UTC)
- 2026-10-22 05:03 UTC
- Depth
- 130.8 km · Intermediate (70–300 km)
- Coordinates
- 17.633, -94.961
- Felt reports
- No “Did You Feel It?” reports submitted
- Tsunami
- No tsunami evaluation was flagged for this earthquake.
- Review status
- Reviewed by a seismologist
- Catalog
- EMSC (Centro Sismológico Euromediterráneo)
Epicentre and nearby recent earthquakes
The highlighted circle is this earthquake. Smaller circles are other events recorded nearby in the last 30 days.
What the shaking was like
At this depth the energy spreads out before it reaches the surface, so shaking is usually weaker but felt over a wider area.
No intensity estimate was published for this event, which is usual for small earthquakes far from populated areas.
Who lives nearby
About 34,051 people live in towns within 30 km of the epicentre, and 1,297,938 within 100 km. Distances are from the epicentre to the town centre.
| Place | Distance | Population |
|---|---|---|
| Medias Aguas | 8.1 km WNW | 1,123 |
| El Juile | 12.6 km NNW | 1,195 |
| Almagres | 19.9 km NNE | 2,069 |
| Aguilera | 20.6 km NNW | 3,260 |
| Achotal de Moreno | 21.6 km WNW | 1,505 |
| Venustiano Carranza (Peña Blanca) | 21.9 km E | 1,097 |
| Jesús Carranza | 23.1 km SSW | 4,023 |
| El Paraíso | 23.2 km SW | 1,072 |
| San Lorenzo Tenochtitlán | 25.2 km ENE | 1,037 |
| Suchilapan del Río | 27.6 km S | 2,487 |
Earthquake history in this area
12 earthquakes of magnitude 4.5+ have been recorded within 200 km of this epicentre since 1960, in Mexico.
Other earthquakes near this epicentre
33 other events within 100 km in the last 30 days.
M 4.1 17 km NNE of Hermanos Cedillo, Mexico
M 3.9 14 km S of Niños Héroes, Mexico
M 4.0 2 km NNW of Boca del Monte, Mexico
M 4.0 30 km WSW of Niños Héroes, Mexico
M 3.6 10 km NNW of Vicente Guerrero, Mexico
M 4.1 15 km WSW of San Juan Mazatlán, Mexico
M 4.0 16 km SW of Suchilapan del Río, Mexico
M 3.7 2 km SSW of El Zarzal, Mexico
M 3.5 13 km S of Helio García Alfaro, Mexico
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Frequently asked questions
How strong was the 8 km WNW of Medias Aguas, Mexico earthquake?
Magnitude 4.2 (m), at a depth of 130.8 km. At this depth the energy spreads out before it reaches the surface, so shaking is usually weaker but felt over a wider area.
Exactly when did it happen?
Oct 21, 2026, 11:03 PM (local time at the epicentre — CST, UTC-6). In universal time: 2026-10-22 05:03 UTC.
Was it felt?
No “Did You Feel It?” reports were submitted for this event. Small earthquakes usually pass unnoticed except very close to the epicentre.
Was there a tsunami warning?
No tsunami evaluation was flagged for this earthquake.
Which towns are closest to the epicentre?
The closest is Medias Aguas, 8.1 km WNW (population 1,123).
Are earthquakes normal in this area?
Yes. The largest earthquake recorded within 200 km since 1960 was magnitude 7.4 (4 km NW of Santa María Zapotitlán, Mexico, 1965), and 33 further events were recorded within 100 km in the last 30 days.
How do I get alerts for the next earthquake here?
Install the free SeismoWatch Android app, draw a box over this area, set a minimum magnitude, and turn alerts on.
About this page
Event data: U.S. Geological Survey (USGS), the European-Mediterranean Seismological Centre (EMSC), in Venezuela FUNVISIS and in Brazil the RSBR through the Centro de Sismologia da USP. Populated places and time zones: GeoNames (CC BY 4.0). Preliminary solutions are revised as more observations arrive.