QuakeIndex

Earthquake · reviewed by a seismologist

M 3.0md

16 km SSE of Guánica, Puerto Rico

· 6.0 km deep · released about 800 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Guánica Municipio 15 kmGuayanilla Municipio 21 kmLajas Municipio 25 kmPeñuelas Municipio 27 kmYauco Municipio 29 kmSabana Grande Municipio 30 kmPonce Municipio 34 kmSan Germán Municipio 36 kmCabo Rojo Municipio 38 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
6.0 km below the surface
Felt
1 report · strongest reported intensity III
Nearest
Guánica Municipio, 15 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2359 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 1 person has reported feeling it to USGS.

How big was it?

This earthquake released about 800 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 6.7 420,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 19,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 13,000× the energy of this one
  4. This earthquake M 3.0 about 800 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 17.8261, -66.8656. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Guánica Municipio, PR 15 km (9 mi) SSE of here earthquakes near Guánica Municipio
Guayanilla Municipio, PR 21 km (13 mi) SSW of here earthquakes near Guayanilla Municipio
Lajas Municipio, PR 25 km (16 mi) SE of here earthquakes near Lajas Municipio
Peñuelas Municipio, PR 27 km (17 mi) SSW of here earthquakes near Peñuelas Municipio
Yauco Municipio, PR 29 km (18 mi) S of here earthquakes near Yauco Municipio
Sabana Grande Municipio, PR 30 km (19 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

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

  1. 2.8 3 km S of Indios, Puerto Rico
  2. 2.6 5 km SW of Guánica, Puerto Rico
  3. 2.5 2 km NE of Magas Arriba, Puerto Rico
  4. 2.7 2 km E of Magas Arriba, Puerto Rico
  5. 3.0 17 km SSW of Tallaboa, Puerto Rico
  6. 2.8 7 km ESE of La Parguera, Puerto Rico
  7. 3.1 2 km N of Maria Antonia, Puerto Rico
  8. 3.3 Puerto Rico region
  9. 3.1 3 km SE of La Parguera, Puerto Rico
  10. 2.9 18 km S of Guánica, Puerto Rico
  11. 3.1 13 km SSE of Guánica, Puerto Rico
  12. 2.1 8 km SSE of Maria Antonia, Puerto Rico
  13. 3.2 18 km S of Guánica, Puerto Rico
  14. 3.4 1 km SE of Palomas, Puerto Rico
  15. 1.8 Puerto Rico region

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 150,000 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.