QuakeIndex

Earthquake · reviewed by a seismologist

M 3.0md

Puerto Rico region

· 38 km deep · released about 1,100 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Ponce Municipio 13 kmJuana Díaz Municipio 17 kmPeñuelas Municipio 21 kmSanta Isabel Municipio 24 kmGuayanilla Municipio 25 kmVillalba Municipio 31 kmGuánica Municipio 35 kmYauco Municipio 35 kmCoamo Municipio 36 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
38 km below the surface
Felt
no reports yet
Nearest
Ponce Municipio, 13 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2050 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 1,100 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 6.7 310,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 14,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 9,800× the energy of this one
  4. This earthquake M 3.0 about 1,100 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 17.8840, -66.6035. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Ponce Municipio, PR 13 km (8 mi) S of here earthquakes near Ponce Municipio
Juana Díaz Municipio, PR 17 km (11 mi) SW of here earthquakes near Juana Díaz Municipio
Peñuelas Municipio, PR 21 km (13 mi) SE of here earthquakes near Peñuelas Municipio
Santa Isabel Municipio, PR 24 km (15 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 31 km (19 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

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

  1. 2.0 2 km NE of Guayanilla, Puerto Rico
  2. 1.8 2 km ENE of Lluveras, Puerto Rico
  3. 2.1 5 km SSW of Guánica, Puerto Rico
  4. 2.1 16 km SSE of Maria Antonia, Puerto Rico
  5. 1.9 6 km E of La Parguera, Puerto Rico
  6. 2.7 6 km SE of Maria Antonia, Puerto Rico
  7. 1.7 4 km ESE of La Parguera, Puerto Rico
  8. 2.4 3 km SSE of Maria Antonia, Puerto Rico
  9. 1.7 5 km E of La Parguera, Puerto Rico
  10. 1.7 7 km WSW of Guánica, Puerto Rico
  11. 1.7 4 km SSW of Liborio Negron Torres, Puerto Rico
  12. 2.5 3 km E of La Parguera, Puerto Rico
  13. 2.3 8 km SSE of Maria Antonia, Puerto Rico
  14. 2.6 5 km SSW of Indios, Puerto Rico
  15. 2.0 3 km SW 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 110,000 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.