QuakeIndex

Earthquake · reviewed by a seismologist

M 2.9ml

Earthquake near Maria Antonia, PR

Yes: an earthquake was likely felt in Maria Antonia in the last 24 hours. M 2.1, 5 km (3 mi) ENE of Maria Antonia, at 4:14 pm AST on 11 November 2026 (20:14 UTC); the estimated shaking in Maria Antonia was intensity II (weak). Every earthquake near Maria Antonia

This page: a magnitude 2.9 earthquake was recorded 15 km (9 mi) south-southeast of Maria Antonia, PR, at 6:13 pm AST on 17 January 2020 (22:13 UTC), 10 km deep. 7 people have reported feeling it to USGS.

USGS: 15 km SSE of Maria Antonia, Puerto Rico

26 km (16 mi) SW of Ponce, PR

6:13 pm AST, Jan 17, 2020 · · 10 km deep · released about 680 lb of TNT

Every earthquake near Maria Antonia Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Guánica Municipio 15 kmGuayanilla Municipio 17 kmPeñuelas Municipio 21 kmYauco Municipio 26 kmLajas Municipio 27 kmPonce Municipio 28 kmSabana Grande Municipio 28 kmSan Germán Municipio 36 kmAdjuntas Municipio 37 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
6:13 pm AST on 17 January 2020 ()
Where
15 km (9 mi) south-southeast of Maria Antonia, PR · earthquakes near Maria Antonia
Magnitude
M 2.9 (ml)
Depth
10 km below the surface
Felt
7 reports · strongest reported intensity IV
Nearest
Guánica Municipio, 15 km NW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2408 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 30 km (19 mi) from the epicentre. In Maria Antonia, 15 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 18 km, intensity II · Magas Arriba 19 km, intensity II · Tallaboa 19 km, intensity II · Yauco 20 km, intensity II · Tallaboa Alta 25 km, intensity II · Ponce 27 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 680 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 22,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 16,000× the energy of this one
  3. Around the size people start to feel M 3.0 1.4× the energy of this one
  4. This earthquake M 2.9 about 680 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 180,000 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 17.8576, -66.8239. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Guánica Municipio, PR 15 km (9 mi) NW earthquakes near Guánica Municipio
Guayanilla Municipio, PR 17 km (10 mi) N earthquakes near Guayanilla Municipio
Peñuelas Municipio, PR 21 km (13 mi) NNE earthquakes near Peñuelas Municipio
Yauco Municipio, PR 26 km (16 mi) N earthquakes near Yauco Municipio
Lajas Municipio, PR 27 km (16 mi) WNW earthquakes near Lajas Municipio
Ponce Municipio, PR 28 km (17 mi) NE earthquakes near Ponce 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. 2.4 7 km S of Indios, Puerto Rico
  2. 2.2 6 km SE of Maria Antonia, Puerto Rico
  3. 2.5 2 km SSE of Guánica, Puerto Rico
  4. 2.9 2 km SSE of Magas Arriba, Puerto Rico
  5. 2.5 12 km SSE of Maria Antonia, Puerto Rico
  6. 2.8 1 km ESE of Tallaboa, Puerto Rico
  7. 2.6 3 km SSE of Magas Arriba, Puerto Rico
  8. 2.8 5 km S of Tallaboa, Puerto Rico
  9. 2.5 0 km SSE of Magas Arriba, Puerto Rico
  10. 3.1 3 km W of Tallaboa, Puerto Rico
  11. 2.4 Puerto Rico region
  12. 2.4 4 km SW of Tallaboa, Puerto Rico
  13. 3.0 4 km ESE of Maria Antonia, Puerto Rico
  14. 2.4 6 km SSW of Indios, Puerto Rico
  15. 2.5 2 km SE of Magas Arriba, 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.