QuakeIndex

Earthquake · reviewed by a seismologist

M 3.2ml

15 km S of Guánica, Puerto Rico

· 10 km deep · released about 1,800 lb of TNT

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10 km30 km60 km120 km N Guánica Municipio 13 kmLajas Municipio 20 kmGuayanilla Municipio 24 kmSabana Grande Municipio 28 kmYauco Municipio 29 kmPeñuelas Municipio 31 kmCabo Rojo Municipio 32 kmSan Germán Municipio 32 kmMaricao Municipio 38 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 3.2 (ml)
Depth
10 km below the surface
Felt
no reports yet
Nearest
Guánica Municipio, 13 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2024 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 1,800 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.2 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 190,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 8,500× the energy of this one
  3. Magna, Utah 2020 M 5.7 6,000× the energy of this one
  4. This earthquake M 3.2 about 1,800 lb of TNT
  5. Around the size people start to feel M 3.0 this one released 1.9× more

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 17.8338, -66.9345. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Guánica Municipio, PR 13 km (8 mi) S of here earthquakes near Guánica Municipio
Lajas Municipio, PR 20 km (12 mi) SE of here earthquakes near Lajas Municipio
Guayanilla Municipio, PR 24 km (15 mi) SW of here earthquakes near Guayanilla Municipio
Sabana Grande Municipio, PR 28 km (17 mi) S of here earthquakes near Sabana Grande Municipio
Yauco Municipio, PR 29 km (18 mi) SSW of here earthquakes near Yauco Municipio
Peñuelas Municipio, PR 31 km (19 mi) SW of here earthquakes near Peñuelas 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. 1.9 7 km WSW of La Parguera, Puerto Rico
  2. 2.6 6 km WSW of Fuig, Puerto Rico
  3. 2.3 12 km SSE of Guánica, Puerto Rico
  4. 1.7 6 km ESE of La Parguera, Puerto Rico
  5. 1.7 4 km SE of Maria Antonia, Puerto Rico
  6. 1.6 5 km ESE of Maria Antonia, Puerto Rico
  7. 1.8 6 km SE of Maria Antonia, Puerto Rico
  8. 1.8 4 km WSW of Guánica, Puerto Rico
  9. 1.9 2 km SW of Guánica, Puerto Rico
  10. 1.8 5 km SSW of Indios, Puerto Rico
  11. 1.8 4 km SSE of Guánica, Puerto Rico
  12. 1.9 3 km SSE of Maria Antonia, Puerto Rico
  13. 1.7 6 km WSW of La Parguera, Puerto Rico
  14. 3.4 5 km SSE of Guánica, Puerto Rico
  15. 1.7 4 km SSW of Liborio Negron Torres, 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 68,000 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.