QuakeIndex

Earthquake · reviewed by a seismologist

M 3.2md

5 km SSE of Ponce, Puerto Rico

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

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Ponce Municipio 4 kmJuana Díaz Municipio 12 kmPeñuelas Municipio 15 kmGuayanilla Municipio 21 kmSanta Isabel Municipio 23 kmVillalba Municipio 23 kmJayuya Municipio 27 kmAdjuntas Municipio 29 kmCoamo Municipio 30 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
13 km below the surface
Felt
1 report · strongest reported intensity III
Nearest
Ponce Municipio, 4 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1676 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 1,800 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 6.7 180,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 8,200× the energy of this one
  3. Magna, Utah 2020 M 5.7 5,800× 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 17.9653, -66.6016. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Ponce Municipio, PR 4 km (3 mi) S of here earthquakes near Ponce Municipio
Juana Díaz Municipio, PR 12 km (8 mi) WSW of here earthquakes near Juana Díaz Municipio
Peñuelas Municipio, PR 15 km (9 mi) ESE of here earthquakes near Peñuelas Municipio
Guayanilla Municipio, PR 21 km (13 mi) ESE of here earthquakes near Guayanilla Municipio
Santa Isabel Municipio, PR 23 km (14 mi) W of here earthquakes near Santa Isabel Municipio
Villalba Municipio, PR 23 km (14 mi) SW of here earthquakes near Villalba Municipio

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

Aftershocks so far

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

  1. 2.1 0 km SSW of Guayanilla, Puerto Rico
  2. 2.7 1 km N of Guayanilla, Puerto Rico
  3. 2.4 3 km S of Guánica, Puerto Rico
  4. 2.7 8 km SSE of Maria Antonia, Puerto Rico
  5. 2.8 2 km SW of Indios, Puerto Rico
  6. 2.2 7 km SE of Indios, Puerto Rico
  7. 2.3 2 km SW of Indios, Puerto Rico
  8. 2.5 2 km SSW of Salinas, Puerto Rico
  9. 2.4 2 km SSW of Indios, Puerto Rico
  10. 2.4 2 km WNW of Tallaboa, Puerto Rico
  11. 2.1 3 km SW of Indios, Puerto Rico
  12. 2.0 2 km SW of Indios, Puerto Rico
  13. 2.1 5 km SE of Maria Antonia, Puerto Rico
  14. 2.1 2 km SE of Palomas, Puerto Rico
  15. 2.3 2 km S of Indios, 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 65,000 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.