QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1md

1 km N of Aguilita, Puerto Rico

· 22 km deep · released about 40 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Juana Díaz Municipio 6 kmPonce Municipio 8 kmVillalba Municipio 12 kmSanta Isabel Municipio 18 kmJayuya Municipio 20 kmCoamo Municipio 20 kmPeñuelas Municipio 20 kmOrocovis Municipio 23 kmGuayanilla Municipio 28 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
22 km below the surface
Felt
no reports yet
Nearest
Juana Díaz Municipio, 6 km SE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2697 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 40 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 5.8 380,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 270,000× the energy of this one
  3. Around the size people start to feel M 3.0 24× the energy of this one
  4. This earthquake M 2.1 about 40 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 18.0365, -66.5355. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Juana Díaz Municipio, PR 6 km (4 mi) NW of here earthquakes near Juana Díaz Municipio
Ponce Municipio, PR 8 km (5 mi) ENE of here earthquakes near Ponce Municipio
Villalba Municipio, PR 12 km (8 mi) SSW of here earthquakes near Villalba Municipio
Santa Isabel Municipio, PR 18 km (11 mi) WNW of here earthquakes near Santa Isabel Municipio
Jayuya Municipio, PR 20 km (13 mi) SSE of here earthquakes near Jayuya Municipio
Coamo Municipio, PR 20 km (13 mi) WSW of here earthquakes near Coamo Municipio

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

Aftershocks so far

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

  1. 2.0 5 km SW of Adjuntas, Puerto Rico
  2. 1.9 6 km SSE of Tallaboa, Puerto Rico
  3. 2.4 5 km NE of Sabana Grande, Puerto Rico
  4. 1.8 7 km NE of Sabana Grande, Puerto Rico
  5. 2.0 5 km NNE of Sabana Grande, Puerto Rico
  6. 2.2 5 km NE of Sabana Grande, Puerto Rico
  7. 1.8 3 km NE of Sabana Grande, Puerto Rico
  8. 2.1 15 km SSE of Guánica, Puerto Rico
  9. 2.0 18 km S of Guánica, Puerto Rico
  10. 1.6 2 km NNW of Lluveras, Puerto Rico
  11. 2.3 9 km ESE of Maricao, Puerto Rico
  12. 1.5 15 km SSW of Potala Pastillo, Puerto Rico
  13. 1.9 14 km SW of Potala Pastillo, Puerto Rico
  14. 1.8 2 km ESE of Potala Pastillo, Puerto Rico
  15. 2.6 3 km WSW of Ciales, 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 4.6 on 2019-03-12 — it released about 6,000 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.