QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6md

7 km SE of La Parguera, Puerto Rico

· 12 km deep · released about 6.4 lb of TNT

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10 km30 km60 km120 km N Lajas Municipio 7 kmGuánica Municipio 8 kmSabana Grande Municipio 18 kmSan Germán Municipio 21 kmCabo Rojo Municipio 21 kmGuayanilla Municipio 23 kmYauco Municipio 23 kmHormigueros Municipio 26 kmMaricao Municipio 28 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 1.6 (md)
Depth
12 km below the surface
Felt
no reports yet
Nearest
Lajas Municipio, 7 km NW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2878 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 6.4 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 2,400,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,700,000× the energy of this one
  3. Around the size people start to feel M 3.0 150× the energy of this one
  4. This earthquake M 1.6 about 6.4 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 17.9266, -66.9965. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Lajas Municipio, PR 7 km (5 mi) SE of here earthquakes near Lajas Municipio
Guánica Municipio, PR 8 km (5 mi) WSW of here earthquakes near Guánica Municipio
Sabana Grande Municipio, PR 18 km (11 mi) SSW of here earthquakes near Sabana Grande Municipio
San Germán Municipio, PR 21 km (13 mi) SSE of here earthquakes near San Germán Municipio
Cabo Rojo Municipio, PR 21 km (13 mi) ESE of here earthquakes near Cabo Rojo Municipio
Guayanilla Municipio, PR 23 km (14 mi) WSW of here earthquakes near Guayanilla Municipio

Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.

Aftershocks so far

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

  1. 1.8 23 km S of La Parguera, Puerto Rico
  2. 1.8 9 km S of Guánica, Puerto Rico
  3. 1.7 3 km NNW of Sabana Grande, Puerto Rico
  4. 2.1 0 km SSW of Mayagüez, Puerto Rico
  5. 2.1 2 km SSE of Hormigueros, Puerto Rico
  6. 1.7 5 km E of Lajas, Puerto Rico
  7. 1.9 9 km NNE of Lluveras, Puerto Rico
  8. 1.8 3 km WNW of Mayagüez, Puerto Rico
  9. 1.9 19 km S of Guánica, Puerto Rico
  10. 1.7 3 km N of Mayagüez, Puerto Rico
  11. 2.0 8 km NNW of Puerto Real, Puerto Rico
  12. 2.0 11 km NW of Puerto Real, Puerto Rico
  13. 1.8 7 km WNW of Maricao, Puerto Rico
  14. 2.8 7 km SSW of La Playa, Puerto Rico
  15. 2.4 5 km SSW of Palmarejo, 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.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.