QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1md

4 km E of Espino, Puerto Rico

· 27 km deep · released about 46 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Añasco Municipio 6 kmMoca Municipio 11 kmLas Marías Municipio 12 kmSan Sebastián Municipio 13 kmAguada Municipio 16 kmHormigueros Municipio 17 kmMaricao Municipio 19 kmRincón Municipio 19 kmSan Germán Municipio 20 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 2.1 (md)
Depth
27 km below the surface
Felt
no reports yet
Nearest
Añasco Municipio, 6 km W
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3325 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 46 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.1 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 330,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 230,000× the energy of this one
  3. Around the size people start to feel M 3.0 21× the energy of this one
  4. This earthquake M 2.1 about 46 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 18.2790, -67.0785. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Añasco Municipio, PR 6 km (4 mi) E of here earthquakes near Añasco Municipio
Moca Municipio, PR 11 km (7 mi) S of here earthquakes near Moca Municipio
Las Marías Municipio, PR 12 km (8 mi) WNW of here earthquakes near Las Marías Municipio
San Sebastián Municipio, PR 13 km (8 mi) WSW of here earthquakes near San Sebastián Municipio
Aguada Municipio, PR 16 km (10 mi) SE of here earthquakes near Aguada Municipio
Hormigueros Municipio, PR 17 km (10 mi) NNE of here earthquakes near Hormigueros Municipio

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

Aftershocks so far

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

  1. 1.9 4 km ESE of San Germán, Puerto Rico
  2. 2.5 16 km NNE of Isabela, Puerto Rico
  3. 2.5 6 km NNE of Hatillo, Puerto Rico
  4. 2.8 Puerto Rico region
  5. 3.4 3 km NNE of Las Marias, Puerto Rico
  6. 3.3 1 km SW of San Sebastián, Puerto Rico
  7. 2.1 2 km W of Las Marías, Puerto Rico
  8. 4.3 21 km NW of Rincón, Puerto Rico
  9. 2.8 21 km NW of Rincón, Puerto Rico
  10. 1.9 2 km N of Juncal, Puerto Rico
  11. 1.6 1 km SSW of Cabo Rojo, Puerto Rico
  12. 1.7 5 km NNE of Yauco, Puerto Rico
  13. 2.0 8 km NW of Puerto Real, Puerto Rico
  14. 2.0 2 km WNW of Tallaboa, Puerto Rico
  15. 2.2 1 km WSW of Magas Arriba, 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.