QuakeIndex

Earthquake · reviewed by a seismologist

M 2.4md

9 km WSW of Adjuntas, Puerto Rico

· 24 km deep · released about 100 lb of TNT

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10 km30 km60 km120 km N Adjuntas Municipio 7 kmYauco Municipio 8 kmMaricao Municipio 14 kmGuayanilla Municipio 15 kmPeñuelas Municipio 15 kmSabana Grande Municipio 16 kmLares Municipio 16 kmUtuado Municipio 18 kmLas Marías Municipio 20 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 2.4 (md)
Depth
24 km below the surface
Felt
no reports yet
Nearest
Adjuntas Municipio, 7 km NE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 611 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 100 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.4 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 150,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 110,000× the energy of this one
  3. Around the size people start to feel M 3.0 9.4× the energy of this one
  4. This earthquake M 2.4 about 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 18.1405, -66.8107. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Adjuntas Municipio, PR 7 km (4 mi) SW of here earthquakes near Adjuntas Municipio
Yauco Municipio, PR 8 km (5 mi) NE of here earthquakes near Yauco Municipio
Maricao Municipio, PR 14 km (9 mi) ESE of here earthquakes near Maricao Municipio
Guayanilla Municipio, PR 15 km (9 mi) N of here earthquakes near Guayanilla Municipio
Peñuelas Municipio, PR 15 km (10 mi) NW of here earthquakes near Peñuelas Municipio
Sabana Grande Municipio, PR 16 km (10 mi) ENE of here earthquakes near Sabana Grande 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 2 km SW of Indios, Puerto Rico
  2. 2.4 6 km NE of Yauco, Puerto Rico
  3. 2.1 7 km SSE of Ponce, Puerto Rico
  4. 2.4 2 km E of Maria Antonia, Puerto Rico
  5. 2.4 3 km E of Tallaboa, Puerto Rico
  6. 2.4 10 km SSE of Indios, Puerto Rico
  7. 1.9 1 km NNE of Yauco, Puerto Rico
  8. 2.1 1 km SSW of Fuig, Puerto Rico
  9. 2.8 2 km NE of Yauco, Puerto Rico
  10. 2.3 10 km SE of Pole Ojea, Puerto Rico
  11. 2.0 3 km SSE of Maria Antonia, Puerto Rico
  12. 2.5 5 km WSW of Guánica, Puerto Rico
  13. 2.3 8 km SSE of Guánica, Puerto Rico
  14. 2.3 2 km SE of Maricao, Puerto Rico
  15. 2.0 7 km SW of Guánica, 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 1,200,000 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.