QuakeIndex

Earthquake · reviewed by a seismologist

M 3.0ml

7 km S of La Parguera, Puerto Rico

· 10 km deep · released about 950 lb of TNT

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10 km30 km60 km120 km N Lajas Municipio 8 kmGuánica Municipio 13 kmCabo Rojo Municipio 18 kmSabana Grande Municipio 22 kmSan Germán Municipio 22 kmHormigueros Municipio 26 kmYauco Municipio 27 kmGuayanilla Municipio 28 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 (ml)
Depth
10 km below the surface
Felt
no reports yet
Nearest
Lajas Municipio, 8 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2363 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 950 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 6.7 350,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 16,000× 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 950 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 17.9102, -67.0388. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Lajas Municipio, PR 8 km (5 mi) S of here earthquakes near Lajas Municipio
Guánica Municipio, PR 13 km (8 mi) WSW of here earthquakes near Guánica Municipio
Cabo Rojo Municipio, PR 18 km (11 mi) ESE of here earthquakes near Cabo Rojo Municipio
Sabana Grande Municipio, PR 22 km (13 mi) SSW of here earthquakes near Sabana Grande Municipio
San Germán Municipio, PR 22 km (14 mi) S of here earthquakes near San Germán Municipio
Hormigueros Municipio, PR 26 km (16 mi) SSE of here earthquakes near Hormigueros 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. 3.6 6 km S of Tallaboa, Puerto Rico
  2. 3.3 13 km S of Indios, Puerto Rico
  3. 2.7 5 km S of Guánica, Puerto Rico
  4. 2.6 Puerto Rico region
  5. 2.0 3 km WSW of Tallaboa, Puerto Rico
  6. 2.5 2 km SE of Magas Arriba, Puerto Rico
  7. 2.8 2 km WSW of Guánica, Puerto Rico
  8. 2.9 2 km WNW of Indios, Puerto Rico
  9. 2.3 0 km WSW of Indios, Puerto Rico
  10. 2.8 8 km SSE of Maria Antonia, Puerto Rico
  11. 2.8 7 km SSW of Indios, Puerto Rico
  12. 2.5 6 km SSW of Indios, Puerto Rico
  13. 2.9 1 km SE of Yauco, Puerto Rico
  14. 2.5 7 km SSE of Maria Antonia, Puerto Rico
  15. 2.5 26 km SSE 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 130,000 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.