QuakeIndex

Earthquake · reviewed by a seismologist

M 3.0md

3 km N of Tallaboa Alta, Puerto Rico

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

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10 km30 km60 km120 km N Peñuelas Municipio 7 kmAdjuntas Municipio 13 kmGuayanilla Municipio 13 kmPonce Municipio 13 kmYauco Municipio 17 kmJayuya Municipio 19 kmUtuado Municipio 21 kmJuana Díaz Municipio 24 kmVillalba Municipio 25 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
4.0 km below the surface
Felt
4 reports · strongest reported intensity III
Nearest
Peñuelas Municipio, 7 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1704 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 4 people have reported feeling it to USGS.

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 6.7 310,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 14,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 9,800× 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 18.0803, -66.7013. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Peñuelas Municipio, PR 7 km (4 mi) NNE of here earthquakes near Peñuelas Municipio
Adjuntas Municipio, PR 13 km (8 mi) SSE of here earthquakes near Adjuntas Municipio
Guayanilla Municipio, PR 13 km (8 mi) NE of here earthquakes near Guayanilla Municipio
Ponce Municipio, PR 13 km (8 mi) NW of here earthquakes near Ponce Municipio
Yauco Municipio, PR 17 km (10 mi) E of here earthquakes near Yauco Municipio
Jayuya Municipio, PR 19 km (12 mi) SW of here earthquakes near Jayuya Municipio

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

Aftershocks so far

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

  1. 2.1 4 km WSW of Fuig, Puerto Rico
  2. 2.3 3 km SW of Indios, Puerto Rico
  3. 2.2 8 km SSW of Guánica, Puerto Rico
  4. 2.7 2 km SW of Guánica, Puerto Rico
  5. 1.8 6 km WSW of Fuig, Puerto Rico
  6. 1.9 6 km SSE of Maria Antonia, Puerto Rico
  7. 1.5 4 km SSE of Maria Antonia, Puerto Rico
  8. 2.3 5 km SE of Maria Antonia, Puerto Rico
  9. 1.6 2 km SSE of Salinas, Puerto Rico
  10. 1.8 1 km W of Guayanilla, Puerto Rico
  11. 2.3 2 km ENE of Maria Antonia, Puerto Rico
  12. 2.0 2 km SW of Lluveras, Puerto Rico
  13. 2.4 1 km S of La Parguera, Puerto Rico
  14. 2.2 4 km SE of Indios, Puerto Rico
  15. 1.5 7 km WSW of La Parguera, 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.