QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6Md

2 km SSW of Hormigueros, Puerto Rico

· 19 km deep · released about 7.6 lb of TNT

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10 km30 km60 km120 km N Hormigueros Municipio 3 kmSan Germán Municipio 11 kmCabo Rojo Municipio 14 kmAñasco Municipio 18 kmLajas Municipio 19 kmSabana Grande Municipio 21 kmLas Marías Municipio 21 kmMaricao Municipio 22 kmRincón Municipio 27 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 1.6 (Md)
Depth
19 km below the surface
Felt
no reports yet
Nearest
Hormigueros Municipio, 3 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3614 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 7.6 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,000,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,400,000× the energy of this one
  3. Around the size people start to feel M 3.0 130× the energy of this one
  4. This earthquake M 1.6 about 7.6 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 18.1210, -67.1398. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Hormigueros Municipio, PR 3 km (2 mi) WSW of here earthquakes near Hormigueros Municipio
San Germán Municipio, PR 11 km (7 mi) W of here earthquakes near San Germán Municipio
Cabo Rojo Municipio, PR 14 km (9 mi) NNE of here earthquakes near Cabo Rojo Municipio
Añasco Municipio, PR 18 km (11 mi) S of here earthquakes near Añasco Municipio
Lajas Municipio, PR 19 km (12 mi) NNW of here earthquakes near Lajas Municipio
Sabana Grande Municipio, PR 21 km (13 mi) WNW 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

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

  1. 2.6 5 km WSW of La Parguera, Puerto Rico
  2. 2.4 8 km SSE of La Parguera, Puerto Rico
  3. 2.3 20 km S of La Parguera, Puerto Rico
  4. 2.3 13 km SSW of Guánica, Puerto Rico
  5. 2.4 1 km W of San Germán, Puerto Rico
  6. 2.3 13 km WNW of Rincón, Puerto Rico
  7. 1.7 1 km WNW of Monte Grande, Puerto Rico
  8. 1.9 12 km SSE of Lares, Puerto Rico
  9. 2.0 20 km SSW of Guánica, Puerto Rico
  10. 2.5 11 km NW of Puerto Real, Puerto Rico
  11. 1.9 3 km ESE of Las Marías, Puerto Rico
  12. 2.3 10 km NNW of Puerto Real, Puerto Rico
  13. 2.7 6 km NNW of Santo Domingo, Puerto Rico
  14. 2.4 8 km WSW of Mayagüez, Puerto Rico
  15. 1.6 5 km SSW of Adjuntas, 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

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