QuakeIndex

Earthquake · reviewed by a seismologist

M 2.3md

11 km SE of Lares, Puerto Rico

· 14 km deep · released about 77 lb of TNT

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10 km30 km60 km120 km N Adjuntas Municipio 7 kmLares Municipio 9 kmMaricao Municipio 13 kmUtuado Municipio 14 kmYauco Municipio 15 kmLas Marías Municipio 17 kmSabana Grande Municipio 20 kmSan Sebastián Municipio 21 kmPeñuelas 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 2.3 (md)
Depth
14 km below the surface
Felt
no reports yet
Nearest
Adjuntas Municipio, 7 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 577 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

How big was it?

This earthquake released about 77 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.3 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 200,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 140,000× the energy of this one
  3. Around the size people start to feel M 3.0 12× the energy of this one
  4. This earthquake M 2.3 about 77 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 18.2122, -66.8185. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Adjuntas Municipio, PR 7 km (4 mi) WNW of here earthquakes near Adjuntas Municipio
Lares Municipio, PR 9 km (6 mi) SE of here earthquakes near Lares Municipio
Maricao Municipio, PR 13 km (8 mi) ENE of here earthquakes near Maricao Municipio
Utuado Municipio, PR 14 km (9 mi) WSW of here earthquakes near Utuado Municipio
Yauco Municipio, PR 15 km (9 mi) NNE of here earthquakes near Yauco Municipio
Las Marías Municipio, PR 17 km (10 mi) E 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

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

  1. 2.2 0 km ESE of Indios, Puerto Rico
  2. 2.6 0 km S of Indios, Puerto Rico
  3. 2.0 1 km SSW of Indios, Puerto Rico
  4. 2.3 4 km S of Indios, Puerto Rico
  5. 2.1 2 km SE of Yauco, Puerto Rico
  6. 2.5 3 km W of Indios, Puerto Rico
  7. 3.9 3 km SSE of Indios, Puerto Rico
  8. 2.0 0 km N of Guayanilla, Puerto Rico
  9. 2.3 2 km WNW of Tallaboa, Puerto Rico
  10. 2.2 1 km S of Maricao, Puerto Rico
  11. 2.3 1 km E of Fuig, Puerto Rico
  12. 2.3 2 km WSW of La Parguera, Puerto Rico
  13. 2.2 0 km N of Indios, Puerto Rico
  14. 2.4 3 km SSW of Playita Cortada, Puerto Rico
  15. 2.1 4 km S 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 1,600,000 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.