QuakeIndex

Earthquake · reviewed by a seismologist

M 3.0md

12 km SSE of Ponce, Puerto Rico

· 7.0 km deep · released about 800 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Ponce Municipio 11 kmJuana Díaz Municipio 15 kmPeñuelas Municipio 20 kmSanta Isabel Municipio 22 kmGuayanilla Municipio 25 kmVillalba Municipio 28 kmCoamo Municipio 33 kmJayuya Municipio 34 kmYauco Municipio 35 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 3.0 (md)
Depth
7.0 km below the surface
Felt
no reports yet
Nearest
Ponce Municipio, 11 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2398 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 800 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.0 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 420,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 19,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 13,000× the energy of this one
  4. This earthquake M 3.0 about 800 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 17.9038, -66.5898. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Ponce Municipio, PR 11 km (7 mi) S of here earthquakes near Ponce Municipio
Juana Díaz Municipio, PR 15 km (9 mi) SW of here earthquakes near Juana Díaz Municipio
Peñuelas Municipio, PR 20 km (12 mi) SE of here earthquakes near Peñuelas Municipio
Santa Isabel Municipio, PR 22 km (14 mi) WSW of here earthquakes near Santa Isabel Municipio
Guayanilla Municipio, PR 25 km (15 mi) ESE of here earthquakes near Guayanilla Municipio
Villalba Municipio, PR 28 km (17 mi) SSW of here earthquakes near Villalba 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. 2.5 11 km SSE of Ponce, Puerto Rico
  2. 2.9 16 km SSW of Potala Pastillo, Puerto Rico
  3. 1.8 8 km S of Ponce, Puerto Rico
  4. 2.3 10 km SSE of La Parguera, Puerto Rico
  5. 2.3 11 km SSE of Ponce, Puerto Rico
  6. 2.5 9 km SE of Maria Antonia, Puerto Rico
  7. 2.3 11 km SSE of Ponce, Puerto Rico
  8. 2.6 10 km ESE of Maricao, Puerto Rico
  9. 1.9 10 km SSE of Ponce, Puerto Rico
  10. 2.0 13 km SSE of Ponce, Puerto Rico
  11. 1.9 12 km SW of Potala Pastillo, Puerto Rico
  12. 2.1 12 km SSE of Ponce, Puerto Rico
  13. 2.1 Puerto Rico region
  14. 1.9 11 km SSE of Ponce, Puerto Rico
  15. 2.3 8 km SSW of Guánica, 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 300 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.