QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9md

7 km WSW of Adjuntas, Puerto Rico

· 10 km deep · released about 22 lb of TNT

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10 km30 km60 km120 km N Adjuntas Municipio 6 kmYauco Municipio 9 kmPeñuelas Municipio 14 kmGuayanilla Municipio 14 kmMaricao Municipio 16 kmUtuado Municipio 18 kmSabana Grande Municipio 18 kmLares Municipio 18 kmLas Marías 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 1.9 (md)
Depth
10 km below the surface
Felt
no reports yet
Nearest
Adjuntas Municipio, 6 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2823 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 22 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 680,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 480,000× the energy of this one
  3. Around the size people start to feel M 3.0 43× the energy of this one
  4. This earthquake M 1.9 about 22 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 18.1350, -66.7883. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Adjuntas Municipio, PR 6 km (4 mi) SSW of here earthquakes near Adjuntas Municipio
Yauco Municipio, PR 9 km (6 mi) NE of here earthquakes near Yauco Municipio
Peñuelas Municipio, PR 14 km (8 mi) NNW of here earthquakes near Peñuelas Municipio
Guayanilla Municipio, PR 14 km (9 mi) N of here earthquakes near Guayanilla Municipio
Maricao Municipio, PR 16 km (10 mi) ESE of here earthquakes near Maricao Municipio
Utuado Municipio, PR 18 km (11 mi) SSW of here earthquakes near Utuado Municipio

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

Aftershocks so far

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

  1. 1.9 1 km SW of San Germán, Puerto Rico
  2. 2.6 10 km N of Carrizales, Puerto Rico
  3. 2.9 8 km NNE of Animas, Puerto Rico
  4. 2.5 12 km E of Maricao, Puerto Rico
  5. 2.1 7 km NNE of Hatillo, Puerto Rico
  6. 1.8 8 km S of La Parguera, Puerto Rico
  7. 2.0 6 km NW of Adjuntas, Puerto Rico
  8. 1.5 7 km ESE of Adjuntas, Puerto Rico
  9. 1.5 1 km NE of Yauco, Puerto Rico
  10. 1.6 7 km SSW of Estancias de Florida, Puerto Rico
  11. 1.8 3 km WNW of Palmarejo, Puerto Rico
  12. 2.7 5 km S of Jayuya, Puerto Rico
  13. 1.8 1 km S of San Germán, Puerto Rico
  14. 2.0 4 km S of Guánica, Puerto Rico
  15. 1.7 3 km SSE of Santa Isabel, 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.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.