QuakeIndex

Earthquake · reviewed by a seismologist

M 3.2md

4 km NNE of Ponce, Puerto Rico

· 19 km deep · released about 1 tons of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Ponce Municipio 6 kmPeñuelas Municipio 13 kmJuana Díaz Municipio 14 kmVillalba Municipio 17 kmJayuya Municipio 18 kmGuayanilla Municipio 20 kmAdjuntas Municipio 21 kmSanta Isabel Municipio 26 kmYauco Municipio 26 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
19 km below the surface
Felt
1 report · strongest reported intensity II
Nearest
Ponce Municipio, 6 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 423 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 1 person has reported feeling it to USGS.

How big was it?

This earthquake released about 1 tons 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 6.7 170,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 7,400× the energy of this one
  3. Magna, Utah 2020 M 5.7 5,200× the energy of this one
  4. This earthquake M 3.2 about 1 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 2.1× 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 18.0510, -66.6125. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Ponce Municipio, PR 6 km (3 mi) N of here earthquakes near Ponce Municipio
Peñuelas Municipio, PR 13 km (8 mi) ENE of here earthquakes near Peñuelas Municipio
Juana Díaz Municipio, PR 14 km (9 mi) WNW of here earthquakes near Juana Díaz Municipio
Villalba Municipio, PR 17 km (11 mi) WSW of here earthquakes near Villalba Municipio
Jayuya Municipio, PR 18 km (11 mi) S of here earthquakes near Jayuya Municipio
Guayanilla Municipio, PR 20 km (13 mi) ENE of here earthquakes near Guayanilla Municipio

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

Aftershocks so far

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

  1. 2.6 6 km S of Guánica, Puerto Rico
  2. 1.9 2 km SE of San Germán, Puerto Rico
  3. 2.0 1 km SSE of Magas Arriba, Puerto Rico
  4. 1.9 7 km SSW of Indios, Puerto Rico
  5. 2.3 3 km SSW of La Parguera, Puerto Rico
  6. 2.2 7 km W of Maricao, Puerto Rico
  7. 2.1 2 km S of Guánica, Puerto Rico
  8. 2.3 13 km SSE of Guánica, Puerto Rico
  9. 2.0 1 km NW of Guayanilla, Puerto Rico
  10. 2.1 6 km WSW of Fuig, Puerto Rico
  11. 2.1 9 km SSE of Maria Antonia, Puerto Rico
  12. 2.0 8 km SSE of Ponce, Puerto Rico
  13. 1.6 5 km N of Yauco, Puerto Rico
  14. 2.0 2 km NNW of Guayanilla, Puerto Rico
  15. 2.7 11 km SSE 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 59,000 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.