QuakeIndex

Earthquake · reviewed by a seismologist

M 3.0md

Puerto Rico region

· 16 km deep · released about 1,100 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Guayanilla Municipio 5 kmYauco Municipio 8 kmGuánica Municipio 12 kmPeñuelas Municipio 12 kmSabana Grande Municipio 14 kmMaricao Municipio 20 kmAdjuntas Municipio 20 kmLajas Municipio 22 kmSan Germán Municipio 23 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
16 km below the surface
Felt
no reports yet
Nearest
Guayanilla Municipio, 5 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1093 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 1,100 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 6.7 300,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 13,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 9,400× the energy of this one
  4. This earthquake M 3.0 about 1,100 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 18.0170, -66.8402. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Guayanilla Municipio, PR 5 km (3 mi) WNW of here earthquakes near Guayanilla Municipio
Yauco Municipio, PR 8 km (5 mi) SSE of here earthquakes near Yauco Municipio
Guánica Municipio, PR 12 km (7 mi) NE of here earthquakes near Guánica Municipio
Peñuelas Municipio, PR 12 km (7 mi) W of here earthquakes near Peñuelas Municipio
Sabana Grande Municipio, PR 14 km (8 mi) ESE of here earthquakes near Sabana Grande Municipio
Maricao Municipio, PR 20 km (13 mi) SSE of here earthquakes near Maricao 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. 2.3 0 km W of Guayanilla, Puerto Rico
  2. 2.2 2 km SSW of Guayanilla, Puerto Rico
  3. 2.5 1 km W of Indios, Puerto Rico
  4. 2.7 9 km S of Indios, Puerto Rico
  5. 2.4 8 km SW of La Parguera, Puerto Rico
  6. 2.3 5 km WSW of Fuig, Puerto Rico
  7. 2.4 7 km ESE of La Parguera, Puerto Rico
  8. 2.9 5 km SE of Maria Antonia, Puerto Rico
  9. 2.5 4 km WNW of Coto Laurel, Puerto Rico
  10. 2.4 1 km SW of Indios, Puerto Rico
  11. 2.4 8 km SE of La Parguera, Puerto Rico
  12. 1.7 Puerto Rico region
  13. 2.3 1 km NW of Guayanilla, Puerto Rico
  14. 2.7 Puerto Rico region
  15. 2.1 1 km WSW of Guayanilla, 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 110,000 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.