QuakeIndex

Earthquake · reviewed by a seismologist

M 2.3md

4 km SSE of Adjuntas, Puerto Rico

· 22 km deep · released about 82 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Adjuntas Municipio 8 kmPeñuelas Municipio 11 kmGuayanilla Municipio 16 kmYauco Municipio 16 kmJayuya Municipio 16 kmUtuado Municipio 17 kmPonce Municipio 17 kmLares Municipio 24 kmMaricao Municipio 24 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
22 km below the surface
Felt
no reports yet
Nearest
Adjuntas Municipio, 8 km NW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1157 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 82 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 5.8 180,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 130,000× 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 82 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 18.1222, -66.7115. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Adjuntas Municipio, PR 8 km (5 mi) SE of here earthquakes near Adjuntas Municipio
Peñuelas Municipio, PR 11 km (7 mi) N of here earthquakes near Peñuelas Municipio
Guayanilla Municipio, PR 16 km (10 mi) NE of here earthquakes near Guayanilla Municipio
Yauco Municipio, PR 16 km (10 mi) ENE of here earthquakes near Yauco Municipio
Jayuya Municipio, PR 16 km (10 mi) SW of here earthquakes near Jayuya Municipio
Utuado Municipio, PR 17 km (10 mi) S of here earthquakes near Utuado Municipio

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

Aftershocks so far

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

  1. 2.3 5 km WSW of Fuig, Puerto Rico
  2. 2.4 7 km ESE of La Parguera, Puerto Rico
  3. 2.9 5 km SE of Maria Antonia, Puerto Rico
  4. 2.5 4 km WNW of Coto Laurel, Puerto Rico
  5. 2.4 1 km SW of Indios, Puerto Rico
  6. 2.4 8 km SE of La Parguera, Puerto Rico
  7. 1.7 Puerto Rico region
  8. 2.3 1 km NW of Guayanilla, Puerto Rico
  9. 2.7 Puerto Rico region
  10. 2.1 1 km WSW of Guayanilla, Puerto Rico
  11. 2.0 1 km ENE of Indios, Puerto Rico
  12. 2.1 8 km SSE of Maria Antonia, Puerto Rico
  13. 2.2 4 km SSW of Indios, Puerto Rico
  14. 1.6 2 km NNW of La Parguera, Puerto Rico
  15. 2.2 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 1,500,000 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.