QuakeIndex

Earthquake · reviewed by a seismologist

M 3.0md

9 km SSE of Maria Antonia, Puerto Rico

· 12 km deep · released about 990 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Guánica Municipio 9 kmGuayanilla Municipio 13 kmPeñuelas Municipio 19 kmYauco Municipio 20 kmLajas Municipio 21 kmSabana Grande Municipio 23 kmPonce Municipio 28 kmSan Germán Municipio 30 kmMaricao Municipio 31 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
12 km below the surface
Felt
3 reports · strongest reported intensity II
Nearest
Guánica Municipio, 9 km NW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1511 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 3 people have reported feeling it to USGS.

How big was it?

This earthquake released about 990 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 6.7 340,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 15,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 11,000× the energy of this one
  4. This earthquake M 3.0 about 990 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 17.9015, -66.8540. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Guánica Municipio, PR 9 km (6 mi) SE of here earthquakes near Guánica Municipio
Guayanilla Municipio, PR 13 km (8 mi) SSW of here earthquakes near Guayanilla Municipio
Peñuelas Municipio, PR 19 km (12 mi) SW of here earthquakes near Peñuelas Municipio
Yauco Municipio, PR 20 km (13 mi) S of here earthquakes near Yauco Municipio
Lajas Municipio, PR 21 km (13 mi) ESE of here earthquakes near Lajas Municipio
Sabana Grande Municipio, PR 23 km (14 mi) SSE of here earthquakes near Sabana Grande 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. 2.1 5 km E of La Parguera, Puerto Rico
  2. 2.0 3 km SE of Palomas, Puerto Rico
  3. 1.6 3 km SSE of La Parguera, Puerto Rico
  4. 1.7 7 km SE of La Parguera, Puerto Rico
  5. 2.7 5 km WSW of Fuig, Puerto Rico
  6. 2.0 3 km WSW of Fuig, Puerto Rico
  7. 2.3 2 km SSE of Yauco, Puerto Rico
  8. 1.9 2 km SSE of Palomas, Puerto Rico
  9. 1.9 7 km SE of Maria Antonia, Puerto Rico
  10. 2.1 1 km WNW of Guánica, Puerto Rico
  11. 2.1 5 km SSE of La Parguera, Puerto Rico
  12. 2.0 6 km WSW of Fuig, Puerto Rico
  13. 1.6 5 km WSW of La Parguera, Puerto Rico
  14. 1.7 2 km SW of Guánica, Puerto Rico
  15. 2.4 2 km SSE of Yauco, 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 120,000 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.