QuakeIndex

Earthquake · reviewed by a seismologist

M 3.0md

4 km SSW of Tallaboa, Puerto Rico

· 8.0 km deep · released about 830 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Peñuelas Municipio 7 kmGuayanilla Municipio 8 kmPonce Municipio 14 kmYauco Municipio 19 kmGuánica Municipio 20 kmAdjuntas Municipio 25 kmJuana Díaz Municipio 26 kmSabana Grande Municipio 26 kmMaricao Municipio 32 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
8.0 km below the surface
Felt
no reports yet
Nearest
Peñuelas Municipio, 7 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2432 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 830 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 6.7 410,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 18,000× 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 830 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 17.9606, -66.7356. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Peñuelas Municipio, PR 7 km (5 mi) S of here earthquakes near Peñuelas Municipio
Guayanilla Municipio, PR 8 km (5 mi) SE of here earthquakes near Guayanilla Municipio
Ponce Municipio, PR 14 km (9 mi) WSW of here earthquakes near Ponce Municipio
Yauco Municipio, PR 19 km (12 mi) SE of here earthquakes near Yauco Municipio
Guánica Municipio, PR 20 km (12 mi) E of here earthquakes near Guánica Municipio
Adjuntas Municipio, PR 25 km (15 mi) S of here earthquakes near Adjuntas 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. 2.7 8 km SW of Guánica, Puerto Rico
  2. 2.5 7 km S of Indios, Puerto Rico
  3. 2.9 Puerto Rico region
  4. 2.8 12 km S of Ponce, Puerto Rico
  5. 2.4 12 km SSE of Indios, Puerto Rico
  6. 2.3 7 km SSE of Guánica, Puerto Rico
  7. 2.6 17 km SSE of Guánica, Puerto Rico
  8. 3.0 7 km SSW of Guánica, Puerto Rico
  9. 3.0 12 km SSE of Guánica, Puerto Rico
  10. 3.1 4 km SE of Indios, Puerto Rico
  11. 3.2 6 km SSE of Guánica, Puerto Rico
  12. 2.7 10 km SSW of Tallaboa, Puerto Rico
  13. 2.7 Puerto Rico region
  14. 2.5 5 km SE of Indios, Puerto Rico
  15. 2.7 2 km ESE of Maria Antonia, 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 140,000 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.