QuakeIndex

Earthquake · reviewed by a seismologist

M 2.5md

3 km E of Hormigueros, Puerto Rico

· 12 km deep · released about 150 lb of TNT

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10 km30 km60 km120 km N Hormigueros Municipio 2 kmSan Germán Municipio 7 kmLas Marías Municipio 16 kmAñasco Municipio 17 kmSabana Grande Municipio 17 kmMaricao Municipio 18 kmCabo Rojo Municipio 18 kmLajas Municipio 19 kmSan Sebastián Municipio 26 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 2.5 (md)
Depth
12 km below the surface
Felt
no reports yet
Nearest
Hormigueros Municipio, 2 km W
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1330 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 150 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 99,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 70,000× the energy of this one
  3. Around the size people start to feel M 3.0 6.2× the energy of this one
  4. This earthquake M 2.5 about 150 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 18.1372, -67.0990. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Hormigueros Municipio, PR 2 km (1 mi) E of here earthquakes near Hormigueros Municipio
San Germán Municipio, PR 7 km (5 mi) WNW of here earthquakes near San Germán Municipio
Las Marías Municipio, PR 16 km (10 mi) SW of here earthquakes near Las Marías Municipio
Añasco Municipio, PR 17 km (11 mi) SSE of here earthquakes near Añasco Municipio
Sabana Grande Municipio, PR 17 km (11 mi) WNW of here earthquakes near Sabana Grande Municipio
Maricao Municipio, PR 18 km (11 mi) WSW of here earthquakes near Maricao Municipio

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

Aftershocks so far

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

  1. 2.9 7 km SSW of Indios, Puerto Rico
  2. 2.4 6 km SSW of Indios, Puerto Rico
  3. 3.1 7 km SE of Maria Antonia, Puerto Rico
  4. 2.5 7 km SE of Maria Antonia, Puerto Rico
  5. 2.5 Puerto Rico region
  6. 2.6 Puerto Rico region
  7. 2.2 2 km W of Tallaboa, Puerto Rico
  8. 2.4 Puerto Rico region
  9. 3.1 2 km WSW of Las Marias, Puerto Rico
  10. 2.8 3 km ENE of Lluveras, Puerto Rico
  11. 2.5 5 km SE of La Parguera, Puerto Rico
  12. 2.5 1 km SE of Magas Arriba, Puerto Rico
  13. 2.4 1 km N of Yauco, Puerto Rico
  14. 2.5 4 km SSE of Guánica, Puerto Rico
  15. 2.0 1 km ESE of Indios, 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 790,000 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.