QuakeIndex

Earthquake · reviewed by a seismologist

M 3.4md

Earthquake near Pueblito del Rio, PR

No earthquake was likely felt in Pueblito del Rio in the 24 hours to 9:03 am AST (13:03 UTC). The last one was M 4.1, 63 km (39 mi) ESE, at 5:44 am AST on 28 October 2026, estimated intensity II (weak) in town; 5 felt reports to USGS. Every earthquake near Pueblito del Rio

This page: a magnitude 3.4 earthquake was recorded 3 km (2 mi) north of Pueblito del Rio, PR, at 5:00 pm AST on 3 April 2025 (21:00 UTC), 131 km deep.

USGS: 2 km N of Pueblito del Rio, Puerto Rico

27 km (17 mi) SE of San Juan, PR · 19 km (12 mi) E of Caguas, PR

5:00 pm AST, Apr 3, 2025 · · 131 km deep · released about 1.7 tons of TNT

Every earthquake near Pueblito del Rio Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Juncos Municipio 6 kmLas Piedras Municipio 7 kmCanóvanas Municipio 9 kmGurabo Municipio 13 kmNaguabo Municipio 14 kmHumacao Municipio 15 kmRío Grande Municipio 15 kmSan Lorenzo Municipio 17 kmTrujillo Alto Municipio 18 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
5:00 pm AST on 3 April 2025 ()
Where
3 km (2 mi) north of Pueblito del Rio, PR · earthquakes near Pueblito del Rio
Magnitude
M 3.4 (md)
Depth
131 km below the surface
Felt
no reports yet
Nearest
Juncos Municipio, 6 km WSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 520 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 Pueblito del Rio, 3 km away, the estimate is intensity I (not felt). 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: El Mangó, Benitez, Peña Pobre, Juncos, Las Piedras, La Fermina.

How big was it?

This earthquake released about 1.7 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.4 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 100,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 4,600× the energy of this one
  3. Magna, Utah 2020 M 5.7 3,200× the energy of this one
  4. This earthquake M 3.4 about 1.7 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 3.5× 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 4.6 on 2016-12-05 — about 72 times the energy of this one.

Before 2016, the USGS record lists one earthquake of M5 or more within 50 km:

  1. 5.1 3 km W of Aguas Buenas, Puerto Rico · 29 km W 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 18.2512, -65.8607. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Juncos Municipio, PR 6 km (4 mi) WSW earthquakes near Juncos Municipio
Las Piedras Municipio, PR 7 km (4 mi) S earthquakes near Las Piedras Municipio
Canóvanas Municipio, PR 9 km (6 mi) NNW earthquakes near Canóvanas Municipio
Gurabo Municipio, PR 13 km (8 mi) W earthquakes near Gurabo Municipio
Naguabo Municipio, PR 14 km (9 mi) ESE earthquakes near Naguabo Municipio
Humacao Municipio, PR 15 km (9 mi) SSE earthquakes near Humacao Municipio

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

Aftershocks so far

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

  1. 1.8 4 km E of Pastos, Puerto Rico
  2. 2.8 4 km SE of Esperanza, Puerto Rico
  3. 2.0 4 km SW of Jagual, Puerto Rico
  4. 3.2 24 km NE of Luquillo, Puerto Rico
  5. 2.1 2 km N of Santa Clara, Puerto Rico
  6. 1.9 0 km ESE of Vázquez, Puerto Rico
  7. 2.9 18 km ESE of El Negro, Puerto Rico
  8. 2.8 16 km ESE of El Negro, Puerto Rico
  9. 2.4 22 km SE of El Negro, Puerto Rico
  10. 2.7 18 km SE of El Negro, Puerto Rico
  11. 2.1 4 km S of Palmas, Puerto Rico
  12. 3.5 9 km NNW of San Juan, Puerto Rico
  13. 3.2 8 km NE of Dorado, Puerto Rico
  14. 2.6 6 km WSW of Guaynabo, Puerto Rico
  15. 3.0 3 km N of Palomas, 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.