QuakeIndex

Earthquake · reviewed by a seismologist

M 3.0md

4 km SW of Liborio Negron Torres, Puerto Rico

· 15 km deep · released about 920 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Lajas Municipio 8 kmSabana Grande Municipio 9 kmGuánica Municipio 9 kmSan Germán Municipio 13 kmYauco Municipio 15 kmMaricao Municipio 19 kmGuayanilla Municipio 19 kmHormigueros Municipio 20 kmCabo Rojo Municipio 22 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
15 km below the surface
Felt
1 report · strongest reported intensity II
Nearest
Lajas Municipio, 8 km WSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 801 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 920 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 6.7 370,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 16,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 12,000× the energy of this one
  4. This earthquake M 3.0 about 920 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 18.0110, -66.9743. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Lajas Municipio, PR 8 km (5 mi) ENE of here earthquakes near Lajas Municipio
Sabana Grande Municipio, PR 9 km (5 mi) SSW of here earthquakes near Sabana Grande Municipio
Guánica Municipio, PR 9 km (5 mi) NW of here earthquakes near Guánica Municipio
San Germán Municipio, PR 13 km (8 mi) SSE of here earthquakes near San Germán Municipio
Yauco Municipio, PR 15 km (9 mi) SW of here earthquakes near Yauco Municipio
Maricao Municipio, PR 19 km (12 mi) SSW of here earthquakes near Maricao 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. 2.4 2 km WSW of Guánica, Puerto Rico
  2. 2.8 1 km ESE of Palmarejo, Puerto Rico
  3. 2.8 3 km NW of Mayagüez, Puerto Rico
  4. 2.1 2 km ESE of Puerto Real, Puerto Rico
  5. 2.8 5 km ESE of La Parguera, Puerto Rico
  6. 2.7 6 km WSW of Guánica, Puerto Rico
  7. 2.6 2 km ENE of Magas Arriba, Puerto Rico
  8. 2.4 10 km SSE of Indios, Puerto Rico
  9. 2.4 4 km SE of Tallaboa, Puerto Rico
  10. 2.1 0 km NE of Guayanilla, Puerto Rico
  11. 2.8 1 km NNE of Guayanilla, Puerto Rico
  12. 2.3 7 km ESE of Mayagüez, Puerto Rico
  13. 2.4 2 km W of Fuig, Puerto Rico
  14. 2.0 5 km N of Yauco, Puerto Rico
  15. 2.2 1 km NE of Indios, 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 130,000 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.