QuakeIndex

Earthquake · reviewed by a seismologist

M 3.0md

7 km SSE of Maria Antonia, Puerto Rico

· 9.4 km deep · released about 1,000 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Guánica Municipio 7 kmGuayanilla Municipio 13 kmYauco Municipio 19 kmLajas Municipio 19 kmPeñuelas Municipio 20 kmSabana Grande Municipio 21 kmSan Germán Municipio 28 kmPonce Municipio 30 kmMaricao Municipio 30 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
Magnitude
M 3.0 (md)
Depth
9.4 km below the surface
Felt
no reports yet
Nearest
Guánica Municipio, 7 km NW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1063 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

How big was it?

This earthquake released about 1,000 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.0 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 330,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 15,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 10,000× the energy of this one
  4. This earthquake M 3.0 about 1,000 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.

Where

Epicentre 17.9132, -66.8703. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Guánica Municipio, PR 7 km (4 mi) SE of here earthquakes near Guánica Municipio
Guayanilla Municipio, PR 13 km (8 mi) SW of here earthquakes near Guayanilla Municipio
Yauco Municipio, PR 19 km (12 mi) S of here earthquakes near Yauco Municipio
Lajas Municipio, PR 19 km (12 mi) ESE of here earthquakes near Lajas Municipio
Peñuelas Municipio, PR 20 km (12 mi) SW of here earthquakes near Peñuelas Municipio
Sabana Grande Municipio, PR 21 km (13 mi) SSE of here earthquakes near Sabana Grande Municipio

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

Aftershocks so far

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

  1. 2.3 4 km WNW of Ponce, Puerto Rico
  2. 2.5 6 km SW of Guánica, Puerto Rico
  3. 2.1 Puerto Rico region
  4. 2.5 4 km S of Indios, Puerto Rico
  5. 3.3 1 km NNE of Indios, Puerto Rico
  6. 2.2 1 km WNW of Guayanilla, Puerto Rico
  7. 2.4 1 km WSW of Guayanilla, Puerto Rico
  8. 3.0 4 km WSW of La Parguera, Puerto Rico
  9. 2.2 7 km SE of Indios, Puerto Rico
  10. 2.1 7 km NW of Coto Laurel, Puerto Rico
  11. 2.3 1 km ENE of Indios, Puerto Rico
  12. 3.1 4 km WSW of Mayagüez, Puerto Rico
  13. 3.4 6 km ENE of La Parguera, Puerto Rico
  14. 2.2 Puerto Rico region
  15. 2.1 5 km ENE of Tallaboa, 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.

For this area

The largest earthquake within 50 km in our catalogue was M 6.4 on 2020-01-07 — it released about 120,000 times the energy of this one.

From the QuakeIndex catalogue, built from the USGS FDSN event service.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.