QuakeIndex

Earthquake · reviewed by a seismologist

M 3.7md

Earthquake near Aguadilla, PR

No earthquake was likely felt in Aguadilla in the 24 hours to 1:02 pm AST (17:02 UTC). The last one was M 3.5, 4 km (3 mi) SE, at 12:03 am AST on 6 November 2026, estimated intensity II (weak) in town. Every earthquake near Aguadilla

This page: a magnitude 3.7 earthquake was recorded 13 km (8 mi) west-northwest of Aguadilla, PR, at 3:04 am AST on 8 September 2025 (07:04 UTC), 97 km deep.

USGS: 13 km WNW of Aguadilla, Puerto Rico

34 km (21 mi) NNW of Mayagüez, PR · 127 km (79 mi) W of San Juan, PR

3:04 am AST, Sep 8, 2025 · · 97 km deep · released about 5 tons of TNT

Every earthquake near Aguadilla Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Aguadilla Municipio 13 kmAguada Municipio 14 kmRincón Municipio 16 kmMoca Municipio 23 kmAñasco Municipio 26 kmIsabela Municipio 27 kmSan Sebastián Municipio 35 kmQuebradillas Municipio 36 kmLas Marías Municipio 41 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
3:04 am AST on 8 September 2025 ()
Where
13 km (8 mi) west-northwest of Aguadilla, PR · earthquakes near Aguadilla
Magnitude
M 3.7 (md)
Depth
97 km below the surface
Felt
no reports yet
Nearest
Aguadilla Municipio, 13 km E
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 346 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 it was probably too small to be felt, even directly above it. In Aguadilla, 13 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.

Earthquakes near other towns within 30 km: Aguada, Caban, Rincón, Luyando, Stella, Moca.

How big was it?

This earthquake released about 5 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.7 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 34,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 1,500× the energy of this one
  3. Magna, Utah 2020 M 5.7 1,100× the energy of this one
  4. This earthquake M 3.7 about 5 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 10× more

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 4.4 on 2017-10-01 — about 12 times the energy of this one.

Before 2016, the USGS record lists 12 earthquakes of M5 or more within 50 km; the five largest:

  1. 7.7 45 km N of San Antonio, Puerto Rico · 50 km NNE of this epicentre
  2. 7.1 24 km NNW of San Antonio, Puerto Rico · 26 km NNE of this epicentre
  3. 6.4 32 km NW of Aguadilla, Puerto Rico · 20 km NW of this epicentre
  4. 6.3 6 km WNW of Aguadilla, Puerto Rico · 7 km SE of this epicentre
  5. 6.1 15 km WNW of San Antonio, Puerto Rico · 9 km NNE 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 18.4798, -67.2661. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Aguadilla Municipio, PR 13 km (8 mi) E earthquakes near Aguadilla Municipio
Aguada Municipio, PR 14 km (9 mi) SE earthquakes near Aguada Municipio
Rincón Municipio, PR 16 km (10 mi) S earthquakes near Rincón Municipio
Moca Municipio, PR 23 km (14 mi) ESE earthquakes near Moca Municipio
Añasco Municipio, PR 26 km (16 mi) SSE earthquakes near Añasco Municipio
Isabela Municipio, PR 27 km (17 mi) E earthquakes near Isabela Municipio

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

Aftershocks so far

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

  1. 2.9 40 km NNW of San Antonio, Puerto Rico
  2. 3.1 29 km WNW of San Antonio, Puerto Rico
  3. 2.3 7 km N of San Germán, Puerto Rico
  4. 2.7 25 km NW of Rincón, Puerto Rico
  5. 3.2 46 km NNW of San Antonio, Puerto Rico
  6. 3.3 17 km SW of Stella, Puerto Rico
  7. 2.5 2 km S of Puerto Real, Puerto Rico
  8. 2.5 2 km NNE of Boquerón, Puerto Rico
  9. 2.3 3 km SSW of Puerto Real, Puerto Rico
  10. 3.0 35 km NNW of San Antonio, Puerto Rico
  11. 3.0 3 km ESE of Moca, Puerto Rico
  12. 2.7 11 km SSW of Stella, Puerto Rico
  13. 2.4 5 km W of Mayagüez, Puerto Rico
  14. 2.6 11 km NW of San Antonio, Puerto Rico
  15. 2.9 4 km NW of Rincón, 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.