QuakeIndex

Earthquake · reviewed by a seismologist

M 2.7md

Earthquake near Indios, PR

No earthquake was likely felt in Indios in the 24 hours to 2:30 pm AST (18:30 UTC). The last one was M 2.0, 3 km (2 mi) SW, at 4:21 am AST on 10 November 2026, estimated intensity II (weak) in town. Every earthquake near Indios

This page: a magnitude 2.7 earthquake was recorded 2 km (1 mi) north-northwest of Indios, PR, at 4:55 pm AST on 9 December 2023 (20:55 UTC), 13 km deep.

USGS: 2 km NNW of Indios, Puerto Rico

21 km (13 mi) W of Ponce, PR

4:55 pm AST, Dec 9, 2023 · · 13 km deep · released about 330 lb of TNT

Every earthquake near Indios Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Guayanilla Municipio 3 kmYauco Municipio 9 kmPeñuelas Municipio 10 kmGuánica Municipio 13 kmSabana Grande Municipio 15 kmAdjuntas Municipio 20 kmMaricao Municipio 21 kmLajas Municipio 23 kmPonce Municipio 23 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
4:55 pm AST on 9 December 2023 ()
Where
2 km (1 mi) north-northwest of Indios, PR · earthquakes near Indios
Magnitude
M 2.7 (md)
Depth
13 km below the surface
Felt
no reports yet
Nearest
Guayanilla Municipio, 3 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1068 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 21 km (13 mi) from the epicentre. In Indios, 2 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: Yauco 3 km, intensity II · Guayanilla 4 km, intensity II · Magas Arriba 6 km, intensity II · Tallaboa 12 km, intensity II · Tallaboa Alta 14 km, intensity II · Adjuntas 20 km, intensity II · Ponce 21 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 330 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 46,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 33,000× the energy of this one
  3. Around the size people start to feel M 3.0 2.9× the energy of this one
  4. This earthquake M 2.7 about 330 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 370,000 times the energy of this one.

Before 2016, the USGS record since 1900 lists no earthquake of M5 or more within 50 km.

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 18.0145, -66.8253. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Guayanilla Municipio, PR 3 km (2 mi) ESE earthquakes near Guayanilla Municipio
Yauco Municipio, PR 9 km (5 mi) NNW earthquakes near Yauco Municipio
Peñuelas Municipio, PR 10 km (6 mi) E earthquakes near Peñuelas Municipio
Guánica Municipio, PR 13 km (8 mi) SW earthquakes near Guánica Municipio
Sabana Grande Municipio, PR 15 km (9 mi) WNW earthquakes near Sabana Grande Municipio
Adjuntas Municipio, PR 20 km (12 mi) NNE earthquakes near Adjuntas Municipio

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

Aftershocks so far

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

  1. 2.8 1 km NE of Fuig, Puerto Rico
  2. 2.1 1 km NNW of Guayanilla, Puerto Rico
  3. 2.5 9 km SSE of Maria Antonia, Puerto Rico
  4. 2.8 6 km SE of Maria Antonia, Puerto Rico
  5. 2.4 7 km S of Indios, Puerto Rico
  6. 2.4 7 km SE of Tallaboa, Puerto Rico
  7. 2.3 3 km NE of Sabana Grande, Puerto Rico
  8. 2.1 12 km SSE of Maria Antonia, Puerto Rico
  9. 2.0 5 km NE of La Parguera, Puerto Rico
  10. 2.3 2 km ENE of Lluveras, Puerto Rico
  11. 2.3 8 km SW of Guánica, Puerto Rico
  12. 2.4 3 km WSW of Indios, Puerto Rico
  13. 2.3 8 km ESE of La Parguera, Puerto Rico
  14. 1.8 4 km NNW of Yauco, Puerto Rico
  15. 2.2 2 km SE of Yauco, 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.