QuakeIndex

Earthquake · reviewed by a seismologist

M 3.2md

12 km SW of Santa Isabel, Puerto Rico

· 30 km deep · released about 1,800 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Santa Isabel Municipio 13 kmJuana Díaz Municipio 14 kmPonce Municipio 19 kmSalinas Municipio 25 kmVillalba Municipio 28 kmCoamo Municipio 29 kmPeñuelas Municipio 31 kmAibonito Municipio 36 kmGuayanilla Municipio 37 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 3.2 (md)
Depth
30 km below the surface
Felt
no reports yet
Nearest
Santa Isabel Municipio, 13 km NE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 991 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

How big was it?

This earthquake released about 1,800 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.2 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 190,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 8,500× the energy of this one
  3. Magna, Utah 2020 M 5.7 6,000× the energy of this one
  4. This earthquake M 3.2 about 1,800 lb of TNT
  5. Around the size people start to feel M 3.0 this one released 1.9× more

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 17.8753, -66.4802. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Santa Isabel Municipio, PR 13 km (8 mi) SW of here earthquakes near Santa Isabel Municipio
Juana Díaz Municipio, PR 14 km (9 mi) S of here earthquakes near Juana Díaz Municipio
Ponce Municipio, PR 19 km (12 mi) SE of here earthquakes near Ponce Municipio
Salinas Municipio, PR 25 km (16 mi) WSW of here earthquakes near Salinas Municipio
Villalba Municipio, PR 28 km (18 mi) S of here earthquakes near Villalba Municipio
Coamo Municipio, PR 29 km (18 mi) SSW of here earthquakes near Coamo Municipio

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

Aftershocks so far

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

  1. 2.5 4 km S of Indios, Puerto Rico
  2. 3.3 1 km NNE of Indios, Puerto Rico
  3. 2.0 5 km S of Salinas, Puerto Rico
  4. 2.9 4 km SSE of Salinas, Puerto Rico
  5. 2.2 1 km WNW of Guayanilla, Puerto Rico
  6. 2.5 7 km S of Orocovis, Puerto Rico
  7. 2.4 1 km WSW of Guayanilla, Puerto Rico
  8. 2.2 7 km SE of Indios, Puerto Rico
  9. 2.1 7 km NW of Coto Laurel, Puerto Rico
  10. 2.3 1 km ENE of Indios, Puerto Rico
  11. 2.1 5 km ENE of Tallaboa, Puerto Rico
  12. 2.1 5 km S of Salinas, Puerto Rico
  13. 2.0 Puerto Rico region
  14. 2.4 14 km SSE of Guánica, Puerto Rico
  15. 2.6 4 km ESE of Adjuntas, 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 68,000 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.