QuakeIndex

Earthquake · reviewed by a seismologist

M 2.0md

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 2.0 earthquake was recorded in Maria Antonia, PR, at 6:59 pm AST on 4 September 2018 (22:59 UTC), 12 km deep.

USGS: 1 km ESE of Maria Antonia, Puerto Rico

27 km (17 mi) W of Ponce, PR

6:59 pm AST, Sep 4, 2018 · · 12 km deep · released about 26 lb of TNT

Every earthquake near Maria Antonia Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Guánica Municipio 5 kmGuayanilla Municipio 9 kmYauco Municipio 13 kmSabana Grande Municipio 14 kmPeñuelas Municipio 17 kmLajas Municipio 17 kmSan Germán Municipio 22 kmMaricao Municipio 23 kmAdjuntas Municipio 26 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
6:59 pm AST on 4 September 2018 ()
Where
in Maria Antonia, PR · earthquakes near Maria Antonia
Magnitude
M 2.0 (md)
Depth
12 km below the surface
Felt
no reports yet
Nearest
Guánica Municipio, 5 km WSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2989 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 10 km (6 mi) from the epicentre. 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. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 26 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.0 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 580,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 410,000× the energy of this one
  3. Around the size people start to feel M 3.0 36× the energy of this one
  4. This earthquake M 2.0 about 26 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

No earthquake of M4 or more has been recorded within 50 km since our catalogue begins in 2016.

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 17.9743, -66.8790. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Guánica Municipio, PR 5 km (3 mi) WSW earthquakes near Guánica Municipio
Guayanilla Municipio, PR 9 km (6 mi) ENE earthquakes near Guayanilla Municipio
Yauco Municipio, PR 13 km (8 mi) N earthquakes near Yauco Municipio
Sabana Grande Municipio, PR 14 km (9 mi) NNW earthquakes near Sabana Grande Municipio
Peñuelas Municipio, PR 17 km (11 mi) ENE earthquakes near Peñuelas Municipio
Lajas Municipio, PR 17 km (11 mi) W earthquakes near Lajas Municipio

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

Aftershocks so far

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

  1. 2.0 6 km ESE of Maricao, Puerto Rico
  2. 1.7 4 km S of La Playa, Puerto Rico
  3. 1.8 2 km ESE of Sabana Grande, Puerto Rico
  4. 1.9 3 km NE of San Germán, Puerto Rico
  5. 2.0 0 km NW of Playita Cortada, Puerto Rico
  6. 2.2 1 km ESE of Potala Pastillo, Puerto Rico
  7. 1.8 1 km SSE of Adjuntas, Puerto Rico
  8. 1.9 3 km NE of Mayagüez, Puerto Rico
  9. 1.9 3 km SSE of Maricao, Puerto Rico
  10. 2.0 11 km WNW of Puerto Real, Puerto Rico
  11. 1.8 5 km SW of Adjuntas, Puerto Rico
  12. 1.9 2 km S of Añasco, Puerto Rico
  13. 2.1 3 km SW of Las Marías, Puerto Rico
  14. 2.4 2 km S of San Sebastián, Puerto Rico
  15. 1.8 8 km WSW of Pole Ojea, 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.