QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6md

Earthquake near Cabo Rojo, PR

No earthquake was likely felt in Cabo Rojo in the 24 hours to 2:39 pm AST (18:39 UTC). The last one was M 2.1, 9 km (6 mi) SSE, at 11:57 pm AST on 8 November 2026, estimated intensity II (weak) in town. Every earthquake near Cabo Rojo

This page: a magnitude 1.6 earthquake was recorded 3 km (2 mi) south of Cabo Rojo, PR, at 2:34 pm AST on 29 June 2017 (18:34 UTC), 10 km deep.

USGS: 2 km S of Cabo Rojo, Puerto Rico

16 km (10 mi) S of Mayagüez, PR · 120 km (75 mi) WSW of San Juan, PR

2:34 pm AST, Jun 29, 2017 · · 10 km deep · released about 6.4 lb of TNT

Every earthquake near Cabo Rojo Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Cabo Rojo Municipio 8 kmHormigueros Municipio 9 kmSan Germán Municipio 12 kmLajas Municipio 14 kmSabana Grande Municipio 21 kmAñasco Municipio 25 kmMaricao Municipio 25 kmLas Marías Municipio 26 kmGuánica Municipio 26 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
2:34 pm AST on 29 June 2017 ()
Where
3 km (2 mi) south of Cabo Rojo, PR · earthquakes near Cabo Rojo
Magnitude
M 1.6 (md)
Depth
10 km below the surface
Felt
no reports yet
Nearest
Cabo Rojo Municipio, 8 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3422 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

At this magnitude and depth, people at rest would likely notice it out to about 4 km (2 mi) from the epicentre. In Cabo Rojo, 3 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: Boquerón, Monte Grande, Puerto Real, Sabana Eneas, Palmarejo, Lajas.

How big was it?

This earthquake released about 6.4 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,400,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,700,000× the energy of this one
  3. Around the size people start to feel M 3.0 150× the energy of this one
  4. This earthquake M 1.6 about 6.4 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

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

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 · 43 km N of this epicentre
  2. 5.8 4 km E of Moca, Puerto Rico · 39 km NNE of this epicentre
  3. 5.2 19 km SW of Stella, Puerto Rico · 28 km WNW of this epicentre
  4. 5.1 21 km SW of Stella, Puerto Rico · 27 km WNW 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 18.0601, -67.1426. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Cabo Rojo Municipio, PR 8 km (5 mi) SSW earthquakes near Cabo Rojo Municipio
Hormigueros Municipio, PR 9 km (5 mi) NNE earthquakes near Hormigueros Municipio
San Germán Municipio, PR 12 km (8 mi) ENE earthquakes near San Germán Municipio
Lajas Municipio, PR 14 km (9 mi) SE earthquakes near Lajas Municipio
Sabana Grande Municipio, PR 21 km (13 mi) E earthquakes near Sabana Grande Municipio
Añasco Municipio, PR 25 km (16 mi) N earthquakes near Añasco Municipio

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

Aftershocks so far

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

  1. 2.0 3 km NW of Sabana Grande, Puerto Rico
  2. 1.7 7 km N of Yauco, Puerto Rico
  3. 1.6 6 km NNE of Lluveras, Puerto Rico
  4. 1.6 6 km SSW of Maricao, Puerto Rico
  5. 2.6 4 km SW of Maricao, Puerto Rico
  6. 1.8 8 km NNW of Yauco, Puerto Rico
  7. 2.0 6 km NW of Sabana Grande, Puerto Rico
  8. 1.8 7 km NNW of Yauco, Puerto Rico
  9. 1.8 6 km NNW of Yauco, Puerto Rico
  10. 2.7 3 km SW of Maricao, Puerto Rico
  11. 2.0 7 km SSW of Tallaboa, Puerto Rico
  12. 2.2 3 km SSE of Boquerón, Puerto Rico
  13. 2.7 2 km ESE of Magas Arriba, Puerto Rico
  14. 2.3 4 km WSW of Tallaboa, Puerto Rico
  15. 2.1 0 km SSW of Cayuco, 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.