QuakeIndex

Earthquake · reviewed by a seismologist

M 2.5md

6 km SSW of Lares, Puerto Rico

· 21 km deep · released about 140 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Lares Municipio 6 kmLas Marías Municipio 7 kmMaricao Municipio 8 kmSan Sebastián Municipio 12 kmAdjuntas Municipio 17 kmSabana Grande Municipio 18 kmYauco Municipio 18 kmSan Germán Municipio 20 kmUtuado 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 2.5 (md)
Depth
21 km below the surface
Felt
no reports yet
Nearest
Lares Municipio, 6 km NE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 889 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 140 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 5.8 110,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 75,000× the energy of this one
  3. Around the size people start to feel M 3.0 6.7× the energy of this one
  4. This earthquake M 2.5 about 140 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 18.2410, -66.9097. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Lares Municipio, PR 6 km (4 mi) SW of here earthquakes near Lares Municipio
Las Marías Municipio, PR 7 km (5 mi) ENE of here earthquakes near Las Marías Municipio
Maricao Municipio, PR 8 km (5 mi) NNE of here earthquakes near Maricao Municipio
San Sebastián Municipio, PR 12 km (7 mi) SSE of here earthquakes near San Sebastián Municipio
Adjuntas Municipio, PR 17 km (11 mi) WNW of here earthquakes near Adjuntas Municipio
Sabana Grande Municipio, PR 18 km (11 mi) NNE 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

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

  1. 2.4 18 km SSE of La Parguera, Puerto Rico
  2. 2.5 15 km SSW of Guánica, Puerto Rico
  3. 2.5 15 km SSW of Guánica, Puerto Rico
  4. 2.3 6 km ENE of La Parguera, Puerto Rico
  5. 3.5 19 km SSW of Guánica, Puerto Rico
  6. 2.8 18 km SSW of Guánica, Puerto Rico
  7. 2.4 3 km ENE of Magas Arriba, Puerto Rico
  8. 2.0 19 km SSW of Guánica, Puerto Rico
  9. 3.7 14 km SSW of Guánica, Puerto Rico
  10. 2.1 2 km NNE of Tallaboa, Puerto Rico
  11. 2.6 4 km SW of Mayagüez, Puerto Rico
  12. 3.1 7 km SSW of Tallaboa, Puerto Rico
  13. 2.9 11 km S of Tallaboa, Puerto Rico
  14. 2.4 6 km SSE of Pole Ojea, Puerto Rico
  15. 2.5 19 km SSW of Guánica, 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 840,000 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.