QuakeIndex

Earthquake · reviewed by a seismologist

M 2.9md

Earthquake near Maricao, PR

No earthquake was likely felt in Maricao in the 24 hours to 11:28 am AST (15:28 UTC). The last one was M 3.0, 33 km (20 mi) SSE, at 3:45 am AST on 8 November 2026, estimated intensity II (weak) in town. Every earthquake near Maricao

This page: a magnitude 2.9 earthquake was recorded 12 km (8 mi) east of Maricao, PR, at 8:06 am AST on 28 January 2025 (12:06 UTC), 18 km deep.

USGS: 12 km E of Maricao, Puerto Rico

31 km (20 mi) NW of Ponce, PR · 30 km (18 mi) E of Mayagüez, PR

8:06 am AST, Jan 28, 2025 · · 18 km deep · released about 720 lb of TNT

Every earthquake near Maricao Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Maricao Municipio 8 kmYauco Municipio 9 kmAdjuntas Municipio 11 kmLares Municipio 12 kmSabana Grande Municipio 13 kmLas Marías Municipio 14 kmGuayanilla Municipio 19 kmSan Germán Municipio 20 kmUtuado Municipio 20 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
8:06 am AST on 28 January 2025 ()
Where
12 km (8 mi) east of Maricao, PR · earthquakes near Maricao
Magnitude
M 2.9 (md)
Depth
18 km below the surface
Felt
no reports yet
Nearest
Maricao Municipio, 8 km W
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 582 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 28 km (17 mi) from the epicentre. In Maricao, 12 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: Lares 14 km, intensity II · Yauco 15 km, intensity II · Adjuntas 15 km, intensity II · Guayanilla 18 km, intensity II · Magas Arriba 19 km, intensity II · San Germán 21 km, intensity II · Tallaboa Alta 22 km, intensity II · San Sebastián 23 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 720 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 21,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 15,000× the energy of this one
  3. Around the size people start to feel M 3.0 1.3× the energy of this one
  4. This earthquake M 2.9 about 720 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 170,000 times the energy of this one.

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

  1. 6.3 6 km WNW of Aguadilla, Puerto Rico · 48 km NW of this epicentre
  2. 5.8 4 km E of Moca, Puerto Rico · 34 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 18.1678, -66.8633. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Maricao Municipio, PR 8 km (5 mi) W earthquakes near Maricao Municipio
Yauco Municipio, PR 9 km (6 mi) S earthquakes near Yauco Municipio
Adjuntas Municipio, PR 11 km (7 mi) E earthquakes near Adjuntas Municipio
Lares Municipio, PR 12 km (8 mi) N earthquakes near Lares Municipio
Sabana Grande Municipio, PR 13 km (8 mi) SW earthquakes near Sabana Grande Municipio
Las Marías Municipio, PR 14 km (9 mi) WNW earthquakes near Las Marías Municipio

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

Aftershocks so far

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

  1. 2.5 6 km SE of Maria Antonia, Puerto Rico
  2. 2.1 3 km NW of Fuig, Puerto Rico
  3. 2.6 6 km SW of Adjuntas, Puerto Rico
  4. 2.3 4 km N of Peñuelas, Puerto Rico
  5. 3.1 5 km SSW of Adjuntas, Puerto Rico
  6. 2.3 9 km SSE of Maria Antonia, Puerto Rico
  7. 2.5 2 km NNE of Yauco, Puerto Rico
  8. 2.0 1 km W of Yauco, Puerto Rico
  9. 2.4 5 km S of Indios, Puerto Rico
  10. 2.3 10 km W of Adjuntas, Puerto Rico
  11. 2.2 2 km ENE of Maria Antonia, Puerto Rico
  12. 2.8 5 km SE of Maria Antonia, Puerto Rico
  13. 2.8 5 km SE of Maria Antonia, Puerto Rico
  14. 2.7 6 km SE of Maria Antonia, Puerto Rico
  15. 2.7 15 km SSE of Guánica, 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.