QuakeIndex

Earthquake · reviewed by a seismologist

M 3.3md

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 3.3 earthquake was recorded 6 km (4 mi) southeast of Maria Antonia, PR, at 11:19 pm AST on 6 July 2022 (03:19 UTC), 10 km deep.

USGS: 6 km SE of Maria Antonia, Puerto Rico

24 km (15 mi) WSW of Ponce, PR

11:19 pm AST, Jul 6, 2022 · · 10 km deep · released about 1.2 tons of TNT

Every earthquake near Maria Antonia Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Guánica Municipio 8 kmGuayanilla Municipio 9 kmPeñuelas Municipio 16 kmYauco Municipio 16 kmSabana Grande Municipio 19 kmLajas Municipio 21 kmPonce Municipio 26 kmSan Germán Municipio 28 kmMaricao Municipio 28 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
11:19 pm AST on 6 July 2022 ()
Where
6 km (4 mi) southeast of Maria Antonia, PR · earthquakes near Maria Antonia
Magnitude
M 3.3 (md)
Depth
10 km below the surface
Felt
no reports yet
Nearest
Guánica Municipio, 8 km W
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1521 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 49 km (30 mi) from the epicentre. In Maria Antonia, 6 km away, the estimate is intensity III (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 10 km, intensity III · Yauco 10 km, intensity III · Magas Arriba 12 km, intensity III · Tallaboa 15 km, intensity III · Tallaboa Alta 20 km, intensity III · Ponce 25 km, intensity II · San Germán 26 km, intensity II · Adjuntas 28 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 1.2 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.3 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 140,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 6,500× the energy of this one
  3. Magna, Utah 2020 M 5.7 4,600× the energy of this one
  4. This earthquake M 3.3 about 1.2 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 2.5× more

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 51,000 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 17.9410, -66.8451. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Guánica Municipio, PR 8 km (5 mi) W earthquakes near Guánica Municipio
Guayanilla Municipio, PR 9 km (5 mi) NE earthquakes near Guayanilla Municipio
Peñuelas Municipio, PR 16 km (10 mi) NE earthquakes near Peñuelas Municipio
Yauco Municipio, PR 16 km (10 mi) N earthquakes near Yauco Municipio
Sabana Grande Municipio, PR 19 km (12 mi) NW earthquakes near Sabana Grande Municipio
Lajas Municipio, PR 21 km (13 mi) WNW earthquakes near Lajas Municipio

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

Aftershocks so far

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

  1. 2.4 6 km SW of Guánica, Puerto Rico
  2. 1.9 6 km E of La Parguera, Puerto Rico
  3. 2.1 Puerto Rico region
  4. 2.2 4 km SSW of La Parguera, Puerto Rico
  5. 2.2 7 km ESE of La Parguera, Puerto Rico
  6. 2.3 6 km SSW of Indios, Puerto Rico
  7. 2.5 2 km SSW of Tallaboa, Puerto Rico
  8. 1.9 7 km E of La Parguera, Puerto Rico
  9. 2.3 4 km SW of La Parguera, Puerto Rico
  10. 2.1 6 km SE of Maria Antonia, Puerto Rico
  11. 2.1 1 km SW of Guánica, Puerto Rico
  12. 2.1 3 km SE of Maria Antonia, Puerto Rico
  13. 2.0 3 km SSE of Guánica, Puerto Rico
  14. 2.4 3 km SSW of Guánica, Puerto Rico
  15. 2.3 10 km SSE 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.