QuakeIndex

Earthquake · reviewed by a seismologist

M 2.8md

Earthquake near Salinas, PR

No earthquake was likely felt in Salinas in the 24 hours to 7:48 pm AST (23:48 UTC). The last one was M 2.2, 8 km (5 mi) NW, at 5:05 pm AST on 8 November 2026, estimated intensity II (weak) in town. Every earthquake near Salinas

This page: a magnitude 2.8 earthquake was recorded 14 km (8 mi) south of Salinas, PR, at 3:26 pm AST on 23 June 2017 (19:26 UTC), 2.0 km deep.

USGS: 13 km S of Salinas, Puerto Rico

66 km (41 mi) SSW of San Juan, PR · 37 km (23 mi) ESE of Ponce, PR

3:26 pm AST, Jun 23, 2017 · · 2.0 km deep · released about 400 lb of TNT

Every earthquake near Salinas Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Santa Isabel Municipio 13 kmSalinas Municipio 14 kmGuayama Municipio 23 kmJuana Díaz Municipio 25 kmCoamo Municipio 28 kmAibonito Municipio 31 kmArroyo Municipio 31 kmCayey Municipio 32 kmVillalba Municipio 35 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
3:26 pm AST on 23 June 2017 ()
Where
14 km (8 mi) south of Salinas, PR · earthquakes near Salinas
Magnitude
M 2.8 (md)
Depth
2.0 km below the surface
Felt
no reports yet
Nearest
Santa Isabel Municipio, 13 km NW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3427 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 26 km (16 mi) from the epicentre. In Salinas, 14 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: Santa Isabel 16 km, intensity II · Coamo 25 km, intensity II · Guayama 25 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 400 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 38,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 27,000× the energy of this one
  3. Around the size people start to feel M 3.0 2.4× the energy of this one
  4. This earthquake M 2.8 about 400 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 4.6 on 2016-12-05 — about 600 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 · 49 km NNE 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 17.8558, -66.3126. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Santa Isabel Municipio, PR 13 km (8 mi) NW earthquakes near Santa Isabel Municipio
Salinas Municipio, PR 14 km (9 mi) NNE earthquakes near Salinas Municipio
Guayama Municipio, PR 23 km (14 mi) NE earthquakes near Guayama Municipio
Juana Díaz Municipio, PR 25 km (15 mi) NW earthquakes near Juana Díaz Municipio
Coamo Municipio, PR 28 km (17 mi) N earthquakes near Coamo Municipio
Aibonito Municipio, PR 31 km (19 mi) N earthquakes near Aibonito Municipio

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

Aftershocks so far

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

  1. 1.7 11 km SSW of Potala Pastillo, Puerto Rico
  2. 2.4 37 km S of Santa Isabel, Puerto Rico
  3. 2.3 4 km SW of Capitanejo, Puerto Rico
  4. 2.0 2 km WNW of Tallaboa, Puerto Rico
  5. 2.6 3 km SE of Magas Arriba, Puerto Rico
  6. 2.5 2 km N of Tallaboa, Puerto Rico
  7. 2.8 21 km SSE of Arroyo, Puerto Rico
  8. 2.5 5 km ESE of G. L. Garcia, Puerto Rico
  9. 2.4 22 km SSE of Arroyo, Puerto Rico
  10. 2.8 43 km SSW of Potala Pastillo, Puerto Rico
  11. 2.9 21 km S of Lamboglia, Puerto Rico
  12. 1.8 22 km S of Jobos, Puerto Rico
  13. 2.5 23 km SSE of Arroyo, Puerto Rico
  14. 2.4 20 km SSE of Jobos, Puerto Rico
  15. 2.4 3 km S of Salinas, 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.