EMSC · October 27, 2026
Magnitude 4.2 earthquake near San Mateo del Mar, Mexico
A magnitude 4.2 earthquake was recorded near OFFSHORE OAXACA, MEXICO on Oct 27, 2026, 03:43 PM (local time at the epicentre — CST, UTC-6), at a depth of about 17.4 km, according to EMSC.
EMSCShallow (0–70 km)Reviewed by a seismologist
Updated 2026-10-28 00:26 UTC
The full record
- Magnitude
- M 4.2 · m
- Location
- OFFSHORE OAXACA, MEXICO
- Local time at the epicentre
- Oct 27, 2026, 03:43 PM — CST, UTC-6
- Time (UTC)
- 2026-10-27 21:43 UTC
- Depth
- 17.4 km · Shallow (0–70 km)
- Coordinates
- 15.547, -94.861
- 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
Shallow earthquakes release their energy close to the surface, so they are felt more strongly nearby than a deeper earthquake of the same magnitude.
No intensity estimate was published for this event, which is usual for small earthquakes far from populated areas.
Who lives nearby
About 0 people live in towns within 30 km of the epicentre, and 220,306 within 100 km. Distances are from the epicentre to the town centre.
| Place | Distance | Population |
|---|---|---|
| San Mateo del Mar | 75.0 km N | 5,734 |
| Colonia Juárez | 75.8 km NNW | 2,803 |
| Salina Cruz | 78.4 km NNW | 84,438 |
| San Francisco del Mar Viejo | 80.0 km NNE | 4,033 |
| Huazantlán del Río | 80.0 km NNW | 1,514 |
| Santa Gertrudis Miramar | 80.9 km NW | 1,291 |
| Morro de Mazatán | 82.5 km NW | 2,625 |
| San Pedro Huilotepec | 83.6 km NNW | 2,827 |
| Álvaro Obregón | 86.9 km NNW | 3,558 |
| San Dionisio del Mar | 87.1 km N | 3,140 |
Earthquake history in this area
9 earthquakes of magnitude 4.5+ have been recorded within 200 km of this epicentre since 1960, in Mexico.
Other earthquakes near this epicentre
52 other events within 100 km in the last 30 days.
M 3.6 51 km NNE of La Línea, Mexico
M 3.8 OFFSHORE OAXACA, MEXICO
M 3.7 37 km NW of San Francisco del Mar Viejo, Mexico
M 3.5 59 km NNE of Cabeza de Toro, Mexico
M 3.5 6 km S of San Francisco del Mar Viejo, Mexico
M 4.5 OFFSHORE OAXACA, MEXICO
M 4.0 OFFSHORE OAXACA, MEXICO
M 3.5 47 km NNW of Santiago Astata, Mexico
M 3.5 OFFSHORE OAXACA, MEXICO
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Frequently asked questions
How strong was the OFFSHORE OAXACA, MEXICO earthquake?
Magnitude 4.2 (m), at a depth of 17.4 km. Shallow earthquakes release their energy close to the surface, so they are felt more strongly nearby than a deeper earthquake of the same magnitude.
Exactly when did it happen?
Oct 27, 2026, 03:43 PM (local time at the epicentre — CST, UTC-6). In universal time: 2026-10-27 21:43 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 San Mateo del Mar, 75.0 km N (population 5,734).
Are earthquakes normal in this area?
Yes. The largest earthquake recorded within 200 km since 1960 was magnitude 8.2 (2017 Tehuantepec, Mexico Earthquake, 2017), and 52 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.