QuakeIndex

Earthquake · reviewed by a seismologist

M 2.6md

Earthquake near Adjuntas, PR

No earthquake was likely felt in Adjuntas in the 24 hours to 3:26 am AST (07:26 UTC). The last one was M 3.0, 31 km (19 mi) SSW, at 3:45 am AST on 8 November 2026, estimated intensity II (weak) in town. Every earthquake near Adjuntas

This page: a magnitude 2.6 earthquake was recorded 8 km (5 mi) west-northwest of Adjuntas, PR, at 8:49 pm AST on 23 October 2025 (00:49 UTC), 11 km deep.

USGS: 7 km WNW of Adjuntas, Puerto Rico

28 km (17 mi) NW of Ponce, PR

8:49 pm AST, Oct 23, 2025 · · 11 km deep · released about 260 lb of TNT

Every earthquake near Adjuntas Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Adjuntas Municipio 3 kmUtuado Municipio 12 kmLares Municipio 13 kmYauco Municipio 14 kmMaricao Municipio 16 kmPeñuelas Municipio 20 kmLas Marías Municipio 20 kmSabana Grande Municipio 21 kmJayuya Municipio 21 km
Distance rings around the epicentre, with the nearest towns at their true direction and later quakes as coloured dots. Not a shaking map — see the USGS ShakeMap for that.
When
8:49 pm AST on 23 October 2025 ()
Where
8 km (5 mi) west-northwest of Adjuntas, PR · earthquakes near Adjuntas
Magnitude
M 2.6 (md)
Depth
11 km below the surface
Felt
no reports yet
Nearest
Adjuntas Municipio, 3 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 384 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

At this magnitude and depth, people at rest would likely notice it out to about 21 km (13 mi) from the epicentre. In Adjuntas, 8 km away, the estimate is intensity II (weak). Estimated from magnitude, depth and distance with the intensity equation USGS Did You Feel It? uses; felt reports, where there are any, are the measurement.

Likely felt in: Adjuntas 8 km, intensity II · Lares 15 km, intensity II · Tallaboa Alta 19 km, intensity II · Yauco 19 km, intensity II · Guayanilla 20 km, intensity II · Magas Arriba 20 km, intensity II · Jayuya 21 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 260 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 59,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 42,000× the energy of this one
  3. Around the size people start to feel M 3.0 3.7× the energy of this one
  4. This earthquake M 2.6 about 260 lb of TNT

Energy from the Gutenberg–Richter relation (log10E = 1.5M + 4.8), rounded to two figures; bar length is magnitude, which is already a logarithm of energy. Magnitudes of past earthquakes from the USGS catalogue.

For this area

The largest earthquake within 50 km since 2016 was M 6.4 on 2020-01-07 — about 470,000 times the energy of this one.

Before 2016, the USGS record lists 2 earthquakes of M5 or more within 50 km:

  1. 5.8 12 km N of Garrochales, Puerto Rico · 47 km NNE of this epicentre
  2. 5.8 4 km E of Moca, Puerto Rico · 38 km NW of this epicentre

Since 2016: the QuakeIndex catalogue (US, M1.5+), built from the USGS FDSN event service. Before 2016: USGS ComCat, M5+ from 1900. Distances are between epicentres. This is the record, not a forecast.

Where

Epicentre 18.1960, -66.7870. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Adjuntas Municipio, PR 3 km (2 mi) ESE earthquakes near Adjuntas Municipio
Utuado Municipio, PR 12 km (8 mi) NE earthquakes near Utuado Municipio
Lares Municipio, PR 13 km (8 mi) NW earthquakes near Lares Municipio
Yauco Municipio, PR 14 km (9 mi) SSW earthquakes near Yauco Municipio
Maricao Municipio, PR 16 km (10 mi) W earthquakes near Maricao Municipio
Peñuelas Municipio, PR 20 km (12 mi) SSE earthquakes near Peñuelas Municipio

Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.

Aftershocks so far

54 earthquakes have been recorded within 50 km since this one.

  1. 2.7 2 km W of Indios, Puerto Rico
  2. 2.3 11 km SSE of Ponce, Puerto Rico
  3. 2.4 2 km NW of Tallaboa, Puerto Rico
  4. 2.2 1 km ENE of Palomas, Puerto Rico
  5. 2.1 6 km SW of Capitanejo, Puerto Rico
  6. 2.2 2 km S of Indios, Puerto Rico
  7. 2.2 4 km S of Indios, Puerto Rico
  8. 2.3 4 km S of Indios, Puerto Rico
  9. 2.2 3 km SSW of Guánica, Puerto Rico
  10. 2.4 0 km WNW of Indios, Puerto Rico
  11. 2.1 5 km SSW of Tallaboa, Puerto Rico
  12. 2.2 2 km NW of Tallaboa, Puerto Rico
  13. 1.9 1 km E of Indios, Puerto Rico
  14. 2.8 2 km SSE of Liborio Negron Torres, Puerto Rico
  15. 2.2 0 km SW of Indios, Puerto Rico

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of . QuakeIndex does not forecast aftershocks. When USGS issues an operational aftershock forecast it appears on the USGS event page.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.