QuakeIndex

Earthquake · reviewed by a seismologist

M 2.5md

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 2.5 earthquake was recorded 2 km (1 mi) north-northwest of Maria Antonia, PR, at 5:24 am AST on 18 July 2020 (09:24 UTC), 14 km deep.

USGS: 2 km NNW of Maria Antonia, Puerto Rico

29 km (18 mi) W of Ponce, PR

5:24 am AST, Jul 18, 2020 · · 14 km deep · released about 150 lb of TNT

Every earthquake near Maria Antonia Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Guánica Municipio 6 kmGuayanilla Municipio 10 kmYauco Municipio 11 kmSabana Grande Municipio 11 kmLajas Municipio 15 kmPeñuelas Municipio 18 kmSan Germán Municipio 19 kmMaricao Municipio 20 kmAdjuntas Municipio 25 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
5:24 am AST on 18 July 2020 ()
Where
2 km (1 mi) north-northwest of Maria Antonia, PR · earthquakes near Maria Antonia
Magnitude
M 2.5 (md)
Depth
14 km below the surface
Felt
no reports yet
Nearest
Guánica Municipio, 6 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2294 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 17 km (11 mi) from the epicentre. In Maria Antonia, 2 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: Yauco 7 km, intensity II · Guayanilla 11 km, intensity II · Magas Arriba 14 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 150 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 99,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 70,000× the energy of this one
  3. Around the size people start to feel M 3.0 6.2× the energy of this one
  4. This earthquake M 2.5 about 150 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 790,000 times the energy of this one.

Before 2016, the USGS record lists one earthquake of M5 or more within 50 km:

  1. 5.8 4 km E of Moca, Puerto Rico · 49 km NNW 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 17.9951, -66.8965. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Guánica Municipio, PR 6 km (4 mi) SSW earthquakes near Guánica Municipio
Guayanilla Municipio, PR 10 km (6 mi) E earthquakes near Guayanilla Municipio
Yauco Municipio, PR 11 km (7 mi) NNE earthquakes near Yauco Municipio
Sabana Grande Municipio, PR 11 km (7 mi) NNW earthquakes near Sabana Grande Municipio
Lajas Municipio, PR 15 km (10 mi) W earthquakes near Lajas Municipio
Peñuelas Municipio, PR 18 km (11 mi) E earthquakes near Peñuelas 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 5 km ESE of La Parguera, Puerto Rico
  2. 3.1 9 km S of Guánica, Puerto Rico
  3. 2.8 5 km S of Guánica, Puerto Rico
  4. 2.1 3 km ENE of Pole Ojea, Puerto Rico
  5. 3.1 7 km WSW of Fuig, Puerto Rico
  6. 2.6 6 km SSE of Guánica, Puerto Rico
  7. 2.6 6 km SE of La Parguera, Puerto Rico
  8. 2.4 10 km SSE of Guánica, Puerto Rico
  9. 2.6 2 km S of Magas Arriba, Puerto Rico
  10. 2.4 5 km WSW of Guánica, Puerto Rico
  11. 2.4 6 km SE of Maria Antonia, Puerto Rico
  12. 2.7 7 km SE of Maria Antonia, Puerto Rico
  13. 2.2 Puerto Rico region
  14. 3.1 3 km SE of La Parguera, Puerto Rico
  15. 2.5 4 km S of Guánica, 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.