QuakeIndex

Earthquake · reviewed by a seismologist

M 1.5md

6 km SSE of Maria Antonia, Puerto Rico

· 9.0 km deep · released about 5.4 lb of TNT

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10 km30 km60 km120 km N Guánica Municipio 6 kmGuayanilla Municipio 12 kmYauco Municipio 18 kmLajas Municipio 18 kmPeñuelas Municipio 19 kmSabana Grande Municipio 19 kmSan Germán Municipio 27 kmMaricao Municipio 29 kmPonce 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 1.5 (md)
Depth
9.0 km below the surface
Felt
no reports yet
Nearest
Guánica Municipio, 6 km WNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2035 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

How big was it?

This earthquake released about 5.4 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,800,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 2,000,000× the energy of this one
  3. Around the size people start to feel M 3.0 180× the energy of this one
  4. This earthquake M 1.5 about 5.4 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 17.9228, -66.8763. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Guánica Municipio, PR 6 km (4 mi) ESE of here earthquakes near Guánica Municipio
Guayanilla Municipio, PR 12 km (8 mi) SW of here earthquakes near Guayanilla Municipio
Yauco Municipio, PR 18 km (11 mi) S of here earthquakes near Yauco Municipio
Lajas Municipio, PR 18 km (11 mi) ESE of here earthquakes near Lajas Municipio
Peñuelas Municipio, PR 19 km (12 mi) SW of here earthquakes near Peñuelas Municipio
Sabana Grande Municipio, PR 19 km (12 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

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

  1. 1.5 2 km SE of Puerto Real, Puerto Rico
  2. 2.0 9 km SSE of Maria Antonia, Puerto Rico
  3. 1.6 0 km SSW of Fuig, Puerto Rico
  4. 2.0 10 km SW of Potala Pastillo, Puerto Rico
  5. 2.7 12 km SW of Potala Pastillo, Puerto Rico
  6. 1.6 6 km W of Fuig, Puerto Rico
  7. 2.1 8 km SSE of Maria Antonia, Puerto Rico
  8. 1.8 1 km S of Maria Antonia, Puerto Rico
  9. 1.9 11 km SE of La Parguera, Puerto Rico
  10. 1.7 2 km SW of Guánica, Puerto Rico
  11. 1.7 2 km SW of Guánica, Puerto Rico
  12. 2.1 11 km SSW of Potala Pastillo, Puerto Rico
  13. 2.8 12 km SW of Potala Pastillo, Puerto Rico
  14. 2.3 1 km SE of Guánica, Puerto Rico
  15. 1.8 4 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 6.4 on 2020-01-07 — it released about 22,000,000 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.