QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1md

9 km SE of Indios, Puerto Rico

· 7.0 km deep · released about 44 lb of TNT

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10 km30 km60 km120 km N Guayanilla Municipio 10 kmPeñuelas Municipio 12 kmGuánica Municipio 17 kmPonce Municipio 19 kmYauco Municipio 20 kmSabana Grande Municipio 26 kmAdjuntas Municipio 29 kmLajas Municipio 29 kmJuana Díaz Municipio 31 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
7.0 km below the surface
Felt
no reports yet
Nearest
Guayanilla Municipio, 10 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1561 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 44 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 5.8 340,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 240,000× the energy of this one
  3. Around the size people start to feel M 3.0 22× the energy of this one
  4. This earthquake M 2.1 about 44 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 17.9230, -66.7687. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Guayanilla Municipio, PR 10 km (6 mi) SSE of here earthquakes near Guayanilla Municipio
Peñuelas Municipio, PR 12 km (8 mi) SSW of here earthquakes near Peñuelas Municipio
Guánica Municipio, PR 17 km (10 mi) E of here earthquakes near Guánica Municipio
Ponce Municipio, PR 19 km (12 mi) WSW of here earthquakes near Ponce Municipio
Yauco Municipio, PR 20 km (13 mi) SSE of here earthquakes near Yauco Municipio
Sabana Grande Municipio, PR 26 km (16 mi) SE 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

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

  1. 2.1 9 km SSE of Maria Antonia, Puerto Rico
  2. 2.3 2 km SW of Indios, Puerto Rico
  3. 2.4 Puerto Rico region
  4. 2.0 1 km S of Indios, Puerto Rico
  5. 2.4 Puerto Rico region
  6. 2.3 3 km SW of Indios, Puerto Rico
  7. 1.9 3 km NNE of La Parguera, Puerto Rico
  8. 1.6 3 km WSW of Indios, Puerto Rico
  9. 2.4 6 km WSW of Liborio Negron Torres, Puerto Rico
  10. 2.2 7 km SSE of Maria Antonia, Puerto Rico
  11. 2.3 3 km SSE of Maria Antonia, Puerto Rico
  12. 2.2 2 km SSW of Tallaboa, Puerto Rico
  13. 2.1 9 km SSW of Guánica, Puerto Rico
  14. 2.6 3 km SSE of Maria Antonia, Puerto Rico
  15. 2.4 7 km SE of Maria Antonia, 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 2,700,000 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.