QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1md

1 km WSW of Liborio Negron Torres, Puerto Rico

· 14 km deep · released about 46 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Sabana Grande Municipio 5 kmGuánica Municipio 11 kmLajas Municipio 11 kmYauco Municipio 11 kmSan Germán Municipio 12 kmMaricao Municipio 15 kmGuayanilla Municipio 17 kmHormigueros Municipio 20 kmLas Marías Municipio 21 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
14 km below the surface
Felt
no reports yet
Nearest
Sabana Grande Municipio, 5 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 494 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 18.0385, -66.9545. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Sabana Grande Municipio, PR 5 km (3 mi) S of here earthquakes near Sabana Grande Municipio
Guánica Municipio, PR 11 km (7 mi) NNW of here earthquakes near Guánica Municipio
Lajas Municipio, PR 11 km (7 mi) NE of here earthquakes near Lajas Municipio
Yauco Municipio, PR 11 km (7 mi) WSW of here earthquakes near Yauco Municipio
San Germán Municipio, PR 12 km (7 mi) SE of here earthquakes near San Germán Municipio
Maricao Municipio, PR 15 km (9 mi) S of here earthquakes near Maricao 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. 2.3 4 km WSW of Guánica, Puerto Rico
  2. 3.0 5 km SW of Guánica, Puerto Rico
  3. 2.1 4 km WSW of Fuig, Puerto Rico
  4. 2.2 10 km SSE of Guánica, Puerto Rico
  5. 2.4 6 km SW of Guánica, Puerto Rico
  6. 2.1 2 km ESE of Lluveras, Puerto Rico
  7. 2.3 4 km SW of Guánica, Puerto Rico
  8. 2.5 3 km SSW of Guánica, Puerto Rico
  9. 2.3 1 km WSW of Guayanilla, Puerto Rico
  10. 2.8 2 km SSW of Indios, Puerto Rico
  11. 2.3 4 km SW of Tallaboa, Puerto Rico
  12. 3.7 5 km SW of Tallaboa, Puerto Rico
  13. 2.2 4 km SSE of Guánica, Puerto Rico
  14. 1.7 12 km SSE of Maria Antonia, Puerto Rico
  15. 2.7 9 km SSE 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 2,600,000 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.