QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6Md

5 km W of Hormigueros, Puerto Rico

· 22 km deep · released about 7.6 lb of TNT

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10 km30 km60 km120 km N Hormigueros Municipio 7 kmCabo Rojo Municipio 15 kmSan Germán Municipio 16 kmAñasco Municipio 18 kmLajas Municipio 23 kmRincón Municipio 24 kmLas Marías Municipio 24 kmSabana Grande Municipio 26 kmMaricao 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
22 km below the surface
Felt
no reports yet
Nearest
Hormigueros Municipio, 7 km E
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3556 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 18.1336, -67.1835. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Hormigueros Municipio, PR 7 km (4 mi) W of here earthquakes near Hormigueros Municipio
Cabo Rojo Municipio, PR 15 km (9 mi) N of here earthquakes near Cabo Rojo Municipio
San Germán Municipio, PR 16 km (10 mi) W of here earthquakes near San Germán Municipio
Añasco Municipio, PR 18 km (11 mi) SSW of here earthquakes near Añasco Municipio
Lajas Municipio, PR 23 km (14 mi) NW of here earthquakes near Lajas Municipio
Rincón Municipio, PR 24 km (15 mi) SSE of here earthquakes near Rincón Municipio

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

Aftershocks so far

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

  1. 1.5 3 km SE of Palmarejo, Puerto Rico
  2. 2.5 13 km SW of La Playa, Puerto Rico
  3. 1.5 3 km SSE of Palmarejo, Puerto Rico
  4. 2.5 1 km E of La Parguera, Puerto Rico
  5. 2.3 13 km SSW of La Parguera, Puerto Rico
  6. 2.0 14 km SSW of La Parguera, Puerto Rico
  7. 1.5 17 km SSW of La Parguera, Puerto Rico
  8. 1.8 0 km SSW of Palmarejo, Puerto Rico
  9. 1.9 3 km NNW of La Parguera, Puerto Rico
  10. 1.9 1 km SSE of Puerto Real, Puerto Rico
  11. 2.0 16 km SSW of La Parguera, Puerto Rico
  12. 2.2 18 km SSE of Pole Ojea, Puerto Rico
  13. 1.8 13 km WNW of Rincón, Puerto Rico
  14. 2.1 13 km SSE of Pole Ojea, Puerto Rico
  15. 2.3 15 km SSW 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.

On USGS

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