QuakeIndex

Earthquake · reviewed by a seismologist

M 2.3md

3 km NE of Sabana Grande, Puerto Rico

· 23 km deep · released about 79 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Sabana Grande Municipio 2 kmYauco Municipio 8 kmMaricao Municipio 9 kmSan Germán Municipio 11 kmLas Marías Municipio 15 kmGuánica Municipio 17 kmLajas Municipio 17 kmGuayanilla Municipio 18 kmHormigueros 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 2.3 (md)
Depth
23 km below the surface
Felt
no reports yet
Nearest
Sabana Grande Municipio, 2 km SW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1012 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 79 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.3 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 190,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 130,000× the energy of this one
  3. Around the size people start to feel M 3.0 12× the energy of this one
  4. This earthquake M 2.3 about 79 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 18.0973, -66.9348. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Sabana Grande Municipio, PR 2 km (1 mi) NE of here earthquakes near Sabana Grande Municipio
Yauco Municipio, PR 8 km (5 mi) W of here earthquakes near Yauco Municipio
Maricao Municipio, PR 9 km (5 mi) S of here earthquakes near Maricao Municipio
San Germán Municipio, PR 11 km (7 mi) E of here earthquakes near San Germán Municipio
Las Marías Municipio, PR 15 km (9 mi) SSE of here earthquakes near Las Marías Municipio
Guánica Municipio, PR 17 km (10 mi) N of here earthquakes near Guánica 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. 2.0 9 km SSW of Guánica, Puerto Rico
  2. 2.1 3 km NNE of Sabana Eneas, Puerto Rico
  3. 2.3 6 km SW of Liborio Negron Torres, Puerto Rico
  4. 2.4 0 km NNW of Guánica, Puerto Rico
  5. 2.2 16 km S of Guánica, Puerto Rico
  6. 2.5 18 km W of Puerto Real, Puerto Rico
  7. 2.1 5 km S of Guánica, Puerto Rico
  8. 2.7 8 km SE of Maria Antonia, Puerto Rico
  9. 2.3 12 km SSE of Guánica, Puerto Rico
  10. 2.7 8 km S of Guánica, Puerto Rico
  11. 1.7 7 km SSE of Lares, Puerto Rico
  12. 2.0 8 km SW of Guánica, Puerto Rico
  13. 1.7 9 km SW of Guánica, Puerto Rico
  14. 2.1 4 km SSE of Guánica, Puerto Rico
  15. 2.4 4 km WSW of Guánica, 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 1,500,000 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.