QuakeIndex

Earthquake · reviewed by a seismologist

M 2.3md

Earthquake near Maria Antonia, PR

No earthquake was likely felt in Maria Antonia in the 24 hours to 3:32 pm AST (19:32 UTC). The last one was M 2.1, 11 km (7 mi) ENE, at 4:39 pm AST on 9 November 2026, estimated intensity II (weak) in town. Every earthquake near Maria Antonia

This page: a magnitude 2.3 earthquake was recorded 12 km (7 mi) south-southeast of Maria Antonia, PR, at 6:20 pm AST on 31 October 2026 (22:20 UTC), 9.4 km deep.

USGS: 11 km SSE of Maria Antonia, Puerto Rico

28 km (17 mi) WSW of Ponce, PR

6:20 pm AST, Oct 31, 2026 · · 9.4 km deep · released about 94 lb of TNT

Every earthquake near Maria Antonia Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Guánica Municipio 11 kmGuayanilla Municipio 15 kmPeñuelas Municipio 21 kmLajas Municipio 23 kmYauco Municipio 23 kmSabana Grande Municipio 25 kmPonce Municipio 30 kmSan Germán Municipio 32 kmMaricao 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
6:20 pm AST on 31 October 2026 ()
Where
12 km (7 mi) south-southeast of Maria Antonia, PR · earthquakes near Maria Antonia
Magnitude
M 2.3 (md)
Depth
9.4 km below the surface
Felt
no reports yet
Nearest
Guánica Municipio, 11 km NW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 11 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 Maria Antonia, 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 17 km, intensity II · Yauco 18 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 94 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.3 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 160,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 110,000× the energy of this one
  3. Around the size people start to feel M 3.0 10× the energy of this one
  4. This earthquake M 2.3 about 94 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 1,300,000 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 17.8775, -66.8543. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Guánica Municipio, PR 11 km (7 mi) NW earthquakes near Guánica Municipio
Guayanilla Municipio, PR 15 km (10 mi) NNE earthquakes near Guayanilla Municipio
Peñuelas Municipio, PR 21 km (13 mi) NE earthquakes near Peñuelas Municipio
Lajas Municipio, PR 23 km (14 mi) WNW earthquakes near Lajas Municipio
Yauco Municipio, PR 23 km (14 mi) N earthquakes near Yauco Municipio
Sabana Grande Municipio, PR 25 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

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

  1. 2.0 2 km SW of Indios, Puerto Rico
  2. 2.1 0 km NNW of Guayanilla, Puerto Rico
  3. 2.1 5 km ESE of Boquerón, Puerto Rico
  4. 2.1 2 km E of Magas Arriba, Puerto Rico
  5. 3.0 8 km SSE of Maria Antonia, Puerto Rico
  6. 2.9 2 km NNW of La Parguera, Puerto Rico
  7. 2.1 1 km W of La Parguera, Puerto Rico
  8. 3.0 1 km WSW of La Parguera, Puerto Rico
  9. 2.5 1 km NW of Magas Arriba, Puerto Rico
  10. 2.2 0 km NW of Aguilita, Puerto Rico
  11. 2.7 1 km S of Sabana Grande, Puerto Rico
  12. 2.2 1 km NW of Indios, Puerto Rico
  13. 2.1 2 km SSE of Guánica, Puerto Rico
  14. 3.0 13 km S of Santa Isabel, Puerto Rico
  15. 1.7 11 km S of Santa Isabel, 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.