QuakeIndex

Earthquake · reviewed by a seismologist

M 2.6md

Earthquake near Aguadilla, PR

No earthquake was likely felt in Aguadilla in the 24 hours to 11:04 pm AST (03:04 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 2.6 earthquake was recorded 10 km (6 mi) northwest of Aguadilla, PR, at 11:16 pm AST on 7 February 2018 (03:16 UTC), 74 km deep.

USGS: 9 km NW of Aguadilla, Puerto Rico

34 km (21 mi) NNW of Mayagüez, PR · 122 km (76 mi) W of San Juan, PR

11:16 pm AST, Feb 7, 2018 · · 74 km deep · released about 220 lb of TNT

Every earthquake near Aguadilla Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Aguadilla Municipio 8 kmAguada Municipio 14 kmRincón Municipio 18 kmMoca Municipio 19 kmIsabela Municipio 21 kmAñasco Municipio 25 kmQuebradillas Municipio 30 kmSan Sebastián Municipio 32 kmCamuy Municipio 37 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
11:16 pm AST on 7 February 2018 ()
Where
10 km (6 mi) northwest of Aguadilla, PR · earthquakes near Aguadilla
Magnitude
M 2.6 (md)
Depth
74 km below the surface
Felt
no reports yet
Nearest
Aguadilla Municipio, 8 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3199 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, 10 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: Caban, Aguada, Rafael Hernandez, Moca, Luyando, Aceitunas.

How big was it?

This earthquake released about 220 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 68,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 48,000× the energy of this one
  3. Around the size people start to feel M 3.0 4.3× the energy of this one
  4. This earthquake M 2.6 about 220 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 4.3 on 2017-10-14 — about 380 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 · 47 km NNE of this epicentre
  2. 7.1 24 km NNW of San Antonio, Puerto Rico · 23 km N of this epicentre
  3. 6.4 32 km NW of Aguadilla, Puerto Rico · 22 km NW of this epicentre
  4. 6.3 6 km WNW of Aguadilla, Puerto Rico · 6 km S of this epicentre
  5. 6.1 15 km WNW of San Antonio, Puerto Rico · 7 km NNW 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 18.4945, -67.2145. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Aguadilla Municipio, PR 8 km (5 mi) ESE earthquakes near Aguadilla Municipio
Aguada Municipio, PR 14 km (8 mi) SSE earthquakes near Aguada Municipio
Rincón Municipio, PR 18 km (11 mi) SSW earthquakes near Rincón Municipio
Moca Municipio, PR 19 km (12 mi) SE earthquakes near Moca Municipio
Isabela Municipio, PR 21 km (13 mi) E earthquakes near Isabela Municipio
Añasco Municipio, PR 25 km (15 mi) SSE earthquakes near Añasco Municipio

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

Aftershocks so far

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

  1. 2.3 Puerto Rico region
  2. 2.3 5 km WNW of Aguada, Puerto Rico
  3. 2.1 15 km WNW of Puerto Real, Puerto Rico
  4. 2.1 16 km WNW of Puerto Real, Puerto Rico
  5. 2.8 35 km NW of Rincón, Puerto Rico
  6. 2.8 31 km NNW of San Antonio, Puerto Rico
  7. 3.0 53 km NNW of San Antonio, Puerto Rico
  8. 2.4 1 km SE of Stella, Puerto Rico
  9. 3.2 29 km NW of Rincón, Puerto Rico
  10. 2.6 53 km NW of San Antonio, Puerto Rico
  11. 2.5 36 km NW of Rincón, Puerto Rico
  12. 2.5 29 km N of Isabela, Puerto Rico
  13. 2.2 4 km ENE of San Germán, Puerto Rico
  14. 2.4 Mona Passage
  15. 2.1 5 km NNE of San Germán, 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.