QuakeIndex

Earthquake · reviewed by a seismologist

M 2.9md

4 km NW of Ponce, Puerto Rico

· 19 km deep · released about 680 lb of TNT

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10 km30 km60 km120 km N Ponce Municipio 6 kmPeñuelas Municipio 8 kmGuayanilla Municipio 16 kmJuana Díaz Municipio 18 kmAdjuntas Municipio 20 kmJayuya Municipio 21 kmVillalba Municipio 22 kmYauco Municipio 23 kmUtuado Municipio 27 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 2.9 (md)
Depth
19 km below the surface
Felt
no reports yet
Nearest
Ponce Municipio, 6 km SE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1546 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 680 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 22,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 16,000× the energy of this one
  3. Around the size people start to feel M 3.0 1.4× the energy of this one
  4. This earthquake M 2.9 about 680 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 18.0370, -66.6508. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Ponce Municipio, PR 6 km (4 mi) NW of here earthquakes near Ponce Municipio
Peñuelas Municipio, PR 8 km (5 mi) E of here earthquakes near Peñuelas Municipio
Guayanilla Municipio, PR 16 km (10 mi) ENE of here earthquakes near Guayanilla Municipio
Juana Díaz Municipio, PR 18 km (11 mi) WNW of here earthquakes near Juana Díaz Municipio
Adjuntas Municipio, PR 20 km (12 mi) SE of here earthquakes near Adjuntas Municipio
Jayuya Municipio, PR 21 km (13 mi) SSW of here earthquakes near Jayuya 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. 2.3 3 km SW of Guánica, Puerto Rico
  2. 2.3 1 km SSE of Palomas, Puerto Rico
  3. 2.6 2 km W of Indios, Puerto Rico
  4. 2.3 3 km S of Guánica, Puerto Rico
  5. 2.3 11 km SSE of Guánica, Puerto Rico
  6. 2.2 2 km NW of Indios, Puerto Rico
  7. 2.2 6 km SW of Fuig, Puerto Rico
  8. 1.9 2 km W of Tallaboa, Puerto Rico
  9. 2.1 7 km SE of Maria Antonia, Puerto Rico
  10. 1.7 2 km SSW of Guánica, Puerto Rico
  11. 2.7 2 km W of Indios, Puerto Rico
  12. 2.8 2 km W of Indios, Puerto Rico
  13. 2.0 4 km SW of Guánica, Puerto Rico
  14. 2.5 12 km SSE of Guánica, Puerto Rico
  15. 2.4 7 km S of Tallaboa, 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 180,000 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.