QuakeIndex

Earthquake · reviewed by a seismologist

M 2.2md

Earthquake near Indios, PR

Yes: an earthquake was likely felt in Indios in the last 24 hours. M 2.4, 13 km (8 mi) WSW of Indios, at 3:43 pm AST on 11 November 2026 (19:43 UTC); the estimated shaking in Indios was intensity II (weak). Every earthquake near Indios

This page: a magnitude 2.2 earthquake was recorded 12 km (8 mi) south of Indios, PR, at 9:38 pm AST on 28 December 2019 (01:38 UTC), 4.0 km deep. 1 person has reported feeling it to USGS.

USGS: 12 km S of Indios, Puerto Rico

25 km (15 mi) WSW of Ponce, PR

9:38 pm AST, Dec 28, 2019 · · 4.0 km deep · released about 52 lb of TNT

Every earthquake near Indios Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Guánica Municipio 13 kmGuayanilla Municipio 14 kmPeñuelas Municipio 19 kmYauco Municipio 23 kmLajas Municipio 25 kmSabana Grande Municipio 26 kmPonce Municipio 26 kmSan Germán Municipio 34 kmAdjuntas Municipio 34 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
9:38 pm AST on 28 December 2019 ()
Where
12 km (8 mi) south of Indios, PR · earthquakes near Indios
Magnitude
M 2.2 (md)
Depth
4.0 km below the surface
Felt
1 report · strongest reported intensity III
Nearest
Guánica Municipio, 13 km NW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2509 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 18 km (11 mi) from the epicentre. In Indios, 12 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.

Likely felt in: Guayanilla 15 km, intensity II · Magas Arriba 16 km, intensity II · Tallaboa 17 km, intensity II · Yauco 17 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 52 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.2 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 290,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 200,000× the energy of this one
  3. Around the size people start to feel M 3.0 18× the energy of this one
  4. This earthquake M 2.2 about 52 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 5.0 on 2019-12-29 — about 18,000 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 17.8851, -66.8238. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Guánica Municipio, PR 13 km (8 mi) NW earthquakes near Guánica Municipio
Guayanilla Municipio, PR 14 km (8 mi) NNE earthquakes near Guayanilla Municipio
Peñuelas Municipio, PR 19 km (12 mi) NNE earthquakes near Peñuelas Municipio
Yauco Municipio, PR 23 km (14 mi) N earthquakes near Yauco Municipio
Lajas Municipio, PR 25 km (16 mi) WNW earthquakes near Lajas Municipio
Sabana Grande Municipio, PR 26 km (16 mi) NNW earthquakes near Sabana Grande Municipio

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

Aftershocks so far

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

  1. 1.9 11 km SSE of Maria Antonia, Puerto Rico
  2. 1.7 14 km SSE of Maria Antonia, Puerto Rico
  3. 2.1 8 km SSE of Maria Antonia, Puerto Rico
  4. 1.7 12 km SSE of Maria Antonia, Puerto Rico
  5. 2.0 5 km SW of Lares, Puerto Rico
  6. 1.5 5 km S of Magas Arriba, Puerto Rico
  7. 1.9 11 km S of Indios, Puerto Rico
  8. 1.8 5 km SE of Maria Antonia, Puerto Rico
  9. 1.9 5 km SSW of Indios, Puerto Rico
  10. 1.8 13 km SSE of Guánica, Puerto Rico
  11. 1.8 9 km S of Indios, Puerto Rico
  12. 1.8 8 km SSE of Guánica, Puerto Rico
  13. 1.8 10 km S of Indios, Puerto Rico
  14. 2.1 7 km SSE of Guánica, Puerto Rico
  15. 2.1 8 km NE of Tallaboa Alta, 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.