QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1md

19 km SSW of Guánica, Puerto Rico

· 6.0 km deep · released about 47 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Guánica Municipio 17 kmLajas Municipio 20 kmGuayanilla Municipio 29 kmCabo Rojo Municipio 30 kmSabana Grande Municipio 31 kmYauco Municipio 33 kmSan Germán Municipio 34 kmPeñuelas Municipio 36 kmHormigueros Municipio 39 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
6.0 km below the surface
Felt
no reports yet
Nearest
Guánica Municipio, 17 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2019 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 47 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 5.8 320,000× 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 20× the energy of this one
  4. This earthquake M 2.1 about 47 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 17.8105, -66.9815. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Guánica Municipio, PR 17 km (10 mi) SSW of here earthquakes near Guánica Municipio
Lajas Municipio, PR 20 km (12 mi) SSE of here earthquakes near Lajas Municipio
Guayanilla Municipio, PR 29 km (18 mi) SW of here earthquakes near Guayanilla Municipio
Cabo Rojo Municipio, PR 30 km (18 mi) SE of here earthquakes near Cabo Rojo Municipio
Sabana Grande Municipio, PR 31 km (19 mi) S of here earthquakes near Sabana Grande Municipio
Yauco Municipio, PR 33 km (21 mi) SSW of here earthquakes near Yauco Municipio

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

Aftershocks so far

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

  1. 1.9 2 km SSW of Guánica, Puerto Rico
  2. 1.8 9 km SSE of Indios, Puerto Rico
  3. 1.8 1 km ENE of Indios, Puerto Rico
  4. 2.3 6 km S of Magas Arriba, Puerto Rico
  5. 2.1 5 km SSE of Maria Antonia, Puerto Rico
  6. 1.7 9 km SSE of La Parguera, Puerto Rico
  7. 2.1 8 km S of Indios, Puerto Rico
  8. 2.6 7 km S of Indios, Puerto Rico
  9. 1.8 6 km SSE of Guánica, Puerto Rico
  10. 1.9 2 km SSW of Indios, Puerto Rico
  11. 2.0 7 km SSE of Guánica, Puerto Rico
  12. 1.5 5 km S of Guánica, Puerto Rico
  13. 2.3 1 km S of Lluveras, Puerto Rico
  14. 1.6 2 km S of Indios, Puerto Rico
  15. 1.5 3 km E 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 2,500,000 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.