QuakeIndex

Earthquake · reviewed by a seismologist

M 2.3md

1 km W of Hormigueros, Puerto Rico

· 103 km deep · released about 98 lb of TNT

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10 km30 km60 km120 km N Hormigueros Municipio 3 kmSan Germán Municipio 12 kmCabo Rojo Municipio 16 kmAñasco Municipio 17 kmLas Marías Municipio 20 kmLajas Municipio 21 kmSabana Grande Municipio 22 kmMaricao Municipio 22 kmRincón Municipio 25 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
103 km below the surface
Felt
no reports yet
Nearest
Hormigueros Municipio, 3 km E
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2961 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 98 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 5.8 150,000× 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 9.8× the energy of this one
  4. This earthquake M 2.3 about 98 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 18.1386, -67.1443. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Hormigueros Municipio, PR 3 km (2 mi) W of here earthquakes near Hormigueros Municipio
San Germán Municipio, PR 12 km (7 mi) WNW of here earthquakes near San Germán Municipio
Cabo Rojo Municipio, PR 16 km (10 mi) NNE of here earthquakes near Cabo Rojo Municipio
Añasco Municipio, PR 17 km (10 mi) S of here earthquakes near Añasco Municipio
Las Marías Municipio, PR 20 km (13 mi) WSW of here earthquakes near Las Marías Municipio
Lajas Municipio, PR 21 km (13 mi) NNW of here earthquakes near Lajas Municipio

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

Aftershocks so far

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

  1. 2.1 1 km E of Maria Antonia, Puerto Rico
  2. 2.6 10 km SW of La Playa, Puerto Rico
  3. 2.0 1 km SE of Palmarejo, Puerto Rico
  4. 2.0 3 km NE of La Parguera, Puerto Rico
  5. 2.0 11 km SSE of Lares, Puerto Rico
  6. 2.1 7 km WSW of Puerto Real, Puerto Rico
  7. 1.9 2 km SSE of Maria Antonia, Puerto Rico
  8. 1.8 0 km E of Maricao, Puerto Rico
  9. 1.7 6 km WSW of Maricao, Puerto Rico
  10. 2.0 7 km W of Puerto Real, Puerto Rico
  11. 2.0 1 km ESE of Maria Antonia, Puerto Rico
  12. 2.2 9 km ESE of Maricao, Puerto Rico
  13. 1.6 5 km NE of Maricao, Puerto Rico
  14. 2.4 Puerto Rico region
  15. 1.7 7 km WSW 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.

For this area

The largest earthquake within 50 km in our catalogue was M 4.3 on 2017-10-14 — it released about 870 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.