QuakeIndex

Earthquake · reviewed by a seismologist

M 3.2Md

Earthquake near Hatillo, PR

No earthquake was likely felt in Hatillo in the 24 hours to 4:56 pm AST (20:56 UTC). The last one was M 3.4, 40 km (25 mi) NW, at 9:00 pm AST on 27 October 2026, estimated intensity II (weak) in town. Every earthquake near Hatillo

This page: a magnitude 3.2 earthquake was recorded 3 km (2 mi) north-northwest of Hatillo, PR, at 6:24 pm AST on 25 October 2016 (22:24 UTC), 15 km deep.

USGS: 2 km NNW of Hatillo, Puerto Rico

12 km (8 mi) WNW of Arecibo, PR · 82 km (51 mi) W of San Juan, PR

6:24 pm AST, Oct 25, 2016 · · 15 km deep · released about 1,900 lb of TNT

Every earthquake near Hatillo Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Camuy Municipio 7 kmHatillo Municipio 8 kmQuebradillas Municipio 11 kmIsabela Municipio 19 kmArecibo Municipio 19 kmSan Sebastián Municipio 24 kmLares Municipio 26 kmMoca Municipio 29 kmBarceloneta Municipio 30 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
6:24 pm AST on 25 October 2016 ()
Where
3 km (2 mi) north-northwest of Hatillo, PR · earthquakes near Hatillo
Magnitude
M 3.2 (Md)
Depth
15 km below the surface
Felt
no reports yet
Nearest
Camuy Municipio, 7 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3584 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 44 km (27 mi) from the epicentre. In Hatillo, 3 km away, the estimate is intensity III (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: Hatillo 3 km, intensity III · Quebradillas 11 km, intensity III · Arecibo 13 km, intensity III · Isabela 20 km, intensity II · Lares 24 km, intensity II · San Sebastián 25 km, intensity II · Rafael Hernandez 26 km, intensity II · Barceloneta 32 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 1,900 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.2 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 180,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 7,900× the energy of this one
  3. Magna, Utah 2020 M 5.7 5,600× the energy of this one
  4. This earthquake M 3.2 about 1,900 lb of TNT
  5. Around the size people start to feel M 3.0 this one released 2× 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

No earthquake of M4 or more has been recorded within 50 km since our catalogue begins in 2016.

Before 2016, the USGS record lists 7 earthquakes of M5 or more within 50 km; the five largest:

  1. 7.1 24 km NNW of San Antonio, Puerto Rico · 43 km WNW of this epicentre
  2. 6.3 6 km WNW of Aguadilla, Puerto Rico · 40 km W of this epicentre
  3. 6.1 15 km WNW of San Antonio, Puerto Rico · 42 km W of this epicentre
  4. 6.1 18 km NNW of San Antonio, Puerto Rico · 39 km WNW of this epicentre
  5. 5.8 12 km N of Garrochales, Puerto Rico · 29 km ENE 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 18.5077, -66.8375. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Camuy Municipio, PR 7 km (5 mi) SSW earthquakes near Camuy Municipio
Hatillo Municipio, PR 8 km (5 mi) SSE earthquakes near Hatillo Municipio
Quebradillas Municipio, PR 11 km (7 mi) WSW earthquakes near Quebradillas Municipio
Isabela Municipio, PR 19 km (12 mi) W earthquakes near Isabela Municipio
Arecibo Municipio, PR 19 km (12 mi) ESE earthquakes near Arecibo Municipio
San Sebastián Municipio, PR 24 km (15 mi) SW earthquakes near San Sebastián Municipio

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

Aftershocks so far

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

  1. 2.7 14 km N of Arecibo, Puerto Rico
  2. 2.8 2 km NE of Animas, Puerto Rico
  3. 2.4 13 km N of Isabela, Puerto Rico
  4. 1.9 12 km SSE of Lares, Puerto Rico
  5. 1.9 3 km ESE of Las Marías, Puerto Rico
  6. 2.7 6 km NNW of Santo Domingo, Puerto Rico
  7. 3.0 14 km NNE of Arecibo, Puerto Rico
  8. 1.6 5 km SSW of Adjuntas, Puerto Rico
  9. 2.8 21 km NNE of Arecibo, Puerto Rico
  10. 2.8 6 km SSW of La Playa, Puerto Rico
  11. 2.3 14 km N of Arecibo, Puerto Rico
  12. 1.7 6 km ENE of Hormigueros, Puerto Rico
  13. 2.4 Puerto Rico region
  14. 3.4 2 km S of La Alianza, Puerto Rico
  15. 1.8 7 km NNE of Sabana Grande, 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.