QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1md

3 km ESE of Espino, Puerto Rico

· 17 km deep · released about 49 lb of TNT

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10 km30 km60 km120 km N Añasco Municipio 6 kmLas Marías Municipio 12 kmMoca Municipio 13 kmHormigueros Municipio 14 kmSan Sebastián Municipio 15 kmAguada Municipio 17 kmSan Germán Municipio 18 kmMaricao Municipio 19 kmRincón Municipio 19 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
17 km below the surface
Felt
no reports yet
Nearest
Añasco Municipio, 6 km WNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1926 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 49 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 5.8 310,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 220,000× the energy of this one
  3. Around the size people start to feel M 3.0 19× the energy of this one
  4. This earthquake M 2.1 about 49 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 18.2610, -67.0863. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Añasco Municipio, PR 6 km (3 mi) ESE of here earthquakes near Añasco Municipio
Las Marías Municipio, PR 12 km (7 mi) WNW of here earthquakes near Las Marías Municipio
Moca Municipio, PR 13 km (8 mi) S of here earthquakes near Moca Municipio
Hormigueros Municipio, PR 14 km (9 mi) NNE of here earthquakes near Hormigueros Municipio
San Sebastián Municipio, PR 15 km (9 mi) WSW of here earthquakes near San Sebastián Municipio
Aguada Municipio, PR 17 km (10 mi) SE of here earthquakes near Aguada Municipio

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

Aftershocks so far

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

  1. 1.7 6 km W of Maricao, Puerto Rico
  2. 1.8 3 km SSE of Palomas, Puerto Rico
  3. 2.8 8 km WSW of Guánica, Puerto Rico
  4. 2.2 Puerto Rico region
  5. 1.9 3 km SW of La Parguera, Puerto Rico
  6. 2.0 1 km W of Fuig, Puerto Rico
  7. 1.9 4 km SW of Indios, Puerto Rico
  8. 2.1 4 km SW of Indios, Puerto Rico
  9. 2.7 2 km W of Indios, Puerto Rico
  10. 1.9 5 km ESE of Maria Antonia, Puerto Rico
  11. 1.8 7 km SE of La Parguera, Puerto Rico
  12. 1.7 7 km W of La Parguera, Puerto Rico
  13. 2.4 4 km S of La Parguera, Puerto Rico
  14. 2.9 3 km W of Indios, Puerto Rico
  15. 1.7 4 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.

For this area

The largest earthquake within 50 km in our catalogue was M 6.4 on 2020-01-07 — it released about 2,500,000 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.