QuakeIndex

Earthquake · reviewed by a seismologist

M 3.0md

0 km SSW of Añasco, Puerto Rico

· 25 km deep · released about 890 lb of TNT

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10 km30 km60 km120 km N Añasco Municipio 2 kmAguada Municipio 12 kmMoca Municipio 13 kmRincón Municipio 13 kmHormigueros Municipio 16 kmLas Marías Municipio 18 kmSan Sebastián Municipio 19 kmSan Germán Municipio 22 kmAguadilla 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
25 km below the surface
Felt
no reports yet
Nearest
Añasco Municipio, 2 km NE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 939 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 890 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 6.7 380,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 17,000× 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 890 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 18.2782, -67.1425. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Añasco Municipio, PR 2 km (1 mi) SW of here earthquakes near Añasco Municipio
Aguada Municipio, PR 12 km (7 mi) SSE of here earthquakes near Aguada Municipio
Moca Municipio, PR 13 km (8 mi) SSW of here earthquakes near Moca Municipio
Rincón Municipio, PR 13 km (8 mi) ESE of here earthquakes near Rincón Municipio
Hormigueros Municipio, PR 16 km (10 mi) N of here earthquakes near Hormigueros Municipio
Las Marías Municipio, PR 18 km (11 mi) WNW of here earthquakes near Las Marías Municipio

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

Aftershocks so far

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

  1. 2.3 6 km NNE of Yauco, Puerto Rico
  2. 2.4 2 km SSW of Indios, Puerto Rico
  3. 2.0 5 km SSE of Maria Antonia, Puerto Rico
  4. 1.7 2 km NNW of La Parguera, Puerto Rico
  5. 2.3 5 km SE of Maria Antonia, Puerto Rico
  6. 2.2 6 km SW of Guánica, Puerto Rico
  7. 2.3 3 km N of La Parguera, Puerto Rico
  8. 1.7 3 km NNE of La Parguera, Puerto Rico
  9. 2.8 3 km N of La Parguera, Puerto Rico
  10. 2.4 4 km ESE of La Parguera, Puerto Rico
  11. 3.3 7 km ESE of La Parguera, Puerto Rico
  12. 2.2 5 km E of La Parguera, Puerto Rico
  13. 2.3 5 km NNE of Yauco, Puerto Rico
  14. 2.4 4 km SSW of Indios, Puerto Rico
  15. 2.1 2 km N 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 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.