QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8Md

12 km SSW of La Parguera, Puerto Rico

· 6.0 km deep · released about 15 lb of TNT

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10 km30 km60 km120 km N Lajas Municipio 13 kmCabo Rojo Municipio 18 kmGuánica Municipio 18 kmSan Germán Municipio 27 kmSabana Grande Municipio 28 kmHormigueros Municipio 30 kmGuayanilla Municipio 33 kmYauco Municipio 33 kmMaricao Municipio 37 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 1.8 (Md)
Depth
6.0 km below the surface
Felt
no reports yet
Nearest
Lajas Municipio, 13 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3478 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 15 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,000,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 710,000× the energy of this one
  3. Around the size people start to feel M 3.0 63× the energy of this one
  4. This earthquake M 1.8 about 15 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 17.8687, -67.0761. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Lajas Municipio, PR 13 km (8 mi) SSW of here earthquakes near Lajas Municipio
Cabo Rojo Municipio, PR 18 km (11 mi) SE of here earthquakes near Cabo Rojo Municipio
Guánica Municipio, PR 18 km (11 mi) WSW of here earthquakes near Guánica Municipio
San Germán Municipio, PR 27 km (17 mi) S of here earthquakes near San Germán Municipio
Sabana Grande Municipio, PR 28 km (17 mi) SSW of here earthquakes near Sabana Grande Municipio
Hormigueros Municipio, PR 30 km (19 mi) S of here earthquakes near Hormigueros Municipio

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

Aftershocks so far

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

  1. 2.4 1 km W of Palmarejo, Puerto Rico
  2. 1.6 9 km S of La Parguera, Puerto Rico
  3. 1.9 4 km NNW of Puerto Real, Puerto Rico
  4. 2.7 1 km ENE of Mayagüez, Puerto Rico
  5. 2.0 2 km WSW of Sabana Grande, Puerto Rico
  6. 2.3 3 km SSE of La Parguera, Puerto Rico
  7. 1.9 9 km SW of La Parguera, Puerto Rico
  8. 2.3 9 km SW of Guánica, Puerto Rico
  9. 2.7 19 km SW of Stella, Puerto Rico
  10. 1.6 3 km SW of Mayagüez, Puerto Rico
  11. 2.3 1 km NW of Liborio Negron Torres, Puerto Rico
  12. 1.8 19 km S of Guánica, Puerto Rico
  13. 1.6 5 km WSW of La Parguera, Puerto Rico
  14. 2.1 1 km ESE of Mayagüez, Puerto Rico
  15. 2.1 2 km SE of Sabana Eneas, 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

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