QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1md

1 km SSW of Liborio Negron Torres, Puerto Rico

· 6.5 km deep · released about 43 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Sabana Grande Municipio 6 kmGuánica Municipio 10 kmYauco Municipio 11 kmLajas Municipio 12 kmSan Germán Municipio 13 kmMaricao Municipio 16 kmGuayanilla Municipio 16 kmHormigueros Municipio 21 kmLas Marías 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 2.1 (md)
Depth
6.5 km below the surface
Felt
no reports yet
Nearest
Sabana Grande Municipio, 6 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1679 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 43 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 5.8 350,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 250,000× 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 43 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 18.0323, -66.9453. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Sabana Grande Municipio, PR 6 km (4 mi) S of here earthquakes near Sabana Grande Municipio
Guánica Municipio, PR 10 km (6 mi) NNW of here earthquakes near Guánica Municipio
Yauco Municipio, PR 11 km (7 mi) WSW of here earthquakes near Yauco Municipio
Lajas Municipio, PR 12 km (7 mi) ENE of here earthquakes near Lajas Municipio
San Germán Municipio, PR 13 km (8 mi) SE of here earthquakes near San Germán Municipio
Maricao Municipio, PR 16 km (10 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

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

  1. 2.2 5 km SE of Maria Antonia, Puerto Rico
  2. 1.9 10 km SSE of Guánica, Puerto Rico
  3. 1.9 3 km SW of Guánica, Puerto Rico
  4. 1.8 4 km WSW of Fuig, Puerto Rico
  5. 2.0 5 km S of Guánica, Puerto Rico
  6. 2.0 6 km WSW of Fuig, Puerto Rico
  7. 2.2 6 km WSW of Guánica, Puerto Rico
  8. 1.5 6 km WSW of Guánica, Puerto Rico
  9. 2.2 5 km WSW of Fuig, Puerto Rico
  10. 1.9 3 km WNW of Fuig, Puerto Rico
  11. 2.5 5 km SSE of Indios, Puerto Rico
  12. 1.6 1 km W of La Parguera, Puerto Rico
  13. 2.6 5 km SE of Maria Antonia, Puerto Rico
  14. 2.0 4 km SE of Maria Antonia, Puerto Rico
  15. 2.3 5 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 2,800,000 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.