QuakeIndex

Earthquake · reviewed by a seismologist

M 3.0md

Earthquake near Boquerón, PR

No earthquake was likely felt in Boquerón in the 24 hours to 11:37 pm AST (03:37 UTC). The last one was M 2.1, 6 km (4 mi) ESE, at 11:57 pm AST on 8 November 2026, estimated intensity II (weak) in town. Every earthquake near Boquerón

This page: a magnitude 3.0 earthquake was recorded 3 km (2 mi) south-southeast of Boquerón, PR, at 6:07 pm AST on 30 May 2026 (22:07 UTC), 13 km deep.

USGS: 3 km SSE of Boquerón, Puerto Rico

22 km (14 mi) S of Mayagüez, PR · 123 km (77 mi) WSW of San Juan, PR

6:07 pm AST, May 30, 2026 · · 13 km deep · released about 1,100 lb of TNT

Every earthquake near Boquerón Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Cabo Rojo Municipio 3 kmLajas Municipio 12 kmHormigueros Municipio 15 kmSan Germán Municipio 17 kmSabana Grande Municipio 24 kmGuánica Municipio 25 kmMaricao Municipio 30 kmLas Marías Municipio 31 kmAñasco Municipio 32 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
6:07 pm AST on 30 May 2026 ()
Where
3 km (2 mi) south-southeast of Boquerón, PR · earthquakes near Boquerón
Magnitude
M 3.0 (md)
Depth
13 km below the surface
Felt
no reports yet
Nearest
Cabo Rojo Municipio, 3 km WSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 93 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 37 km (23 mi) from the epicentre. In Boquerón, 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: Pole Ojea 5 km, intensity III · Puerto Real 9 km, intensity III · San Germán 14 km, intensity II · Mayagüez 22 km, intensity II · Yauco 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 1,100 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.0 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 300,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 13,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 9,400× the energy of this one
  4. This earthquake M 3.0 about 1,100 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 110,000 times the energy of this one.

Before 2016, the USGS record lists 4 earthquakes of M5 or more within 50 km:

  1. 6.3 6 km WNW of Aguadilla, Puerto Rico · 49 km N of this epicentre
  2. 5.8 4 km E of Moca, Puerto Rico · 45 km NNE of this epicentre
  3. 5.2 19 km SW of Stella, Puerto Rico · 31 km NW of this epicentre
  4. 5.1 21 km SW of Stella, Puerto Rico · 30 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 18.0042, -67.1535. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Cabo Rojo Municipio, PR 3 km (2 mi) WSW earthquakes near Cabo Rojo Municipio
Lajas Municipio, PR 12 km (8 mi) ESE earthquakes near Lajas Municipio
Hormigueros Municipio, PR 15 km (9 mi) NNE earthquakes near Hormigueros Municipio
San Germán Municipio, PR 17 km (10 mi) NE earthquakes near San Germán Municipio
Sabana Grande Municipio, PR 24 km (15 mi) ENE earthquakes near Sabana Grande Municipio
Guánica Municipio, PR 25 km (16 mi) ESE earthquakes near Guánica Municipio

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

Aftershocks so far

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

  1. 2.5 1 km NNE of Guayanilla, Puerto Rico
  2. 2.8 2 km NNE of Guayanilla, Puerto Rico
  3. 2.0 1 km NNE of Guayanilla, Puerto Rico
  4. 2.0 4 km SW of Adjuntas, Puerto Rico
  5. 2.1 12 km SSW of Guánica, Puerto Rico
  6. 1.9 5 km WSW of Guánica, Puerto Rico
  7. 2.2 12 km SSE of Lares, Puerto Rico
  8. 2.1 1 km NW of Santo Domingo, Puerto Rico
  9. 2.2 2 km N of Sabana Grande, Puerto Rico
  10. 3.0 6 km E of La Parguera, Puerto Rico
  11. 1.9 3 km NE of La Parguera, Puerto Rico
  12. 2.3 9 km S of Guánica, Puerto Rico
  13. 2.1 4 km ESE of Indios, Puerto Rico
  14. 2.2 13 km SSW of La Parguera, Puerto Rico
  15. 2.3 3 km NE of Boquerón, 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.