QuakeIndex

Earthquake · reviewed by a seismologist

M 1.5Md

3 km SSE of Palmarejo, Puerto Rico

· 7.0 km deep · released about 5.4 lb of TNT

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10 km30 km60 km120 km N Lajas Municipio 5 kmSan Germán Municipio 11 kmCabo Rojo Municipio 13 kmHormigueros Municipio 14 kmSabana Grande Municipio 14 kmGuánica Municipio 17 kmMaricao Municipio 22 kmYauco Municipio 23 kmLas Marías Municipio 25 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
7.0 km below the surface
Felt
no reports yet
Nearest
Lajas Municipio, 5 km SSE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3510 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 18.0160, -67.0634. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Lajas Municipio, PR 5 km (3 mi) NNW of here earthquakes near Lajas Municipio
San Germán Municipio, PR 11 km (7 mi) SSW of here earthquakes near San Germán Municipio
Cabo Rojo Municipio, PR 13 km (8 mi) E of here earthquakes near Cabo Rojo Municipio
Hormigueros Municipio, PR 14 km (9 mi) SSE of here earthquakes near Hormigueros Municipio
Sabana Grande Municipio, PR 14 km (9 mi) WSW of here earthquakes near Sabana Grande Municipio
Guánica Municipio, PR 17 km (10 mi) WNW of here earthquakes near Guánica Municipio

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

Aftershocks so far

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

  1. 2.4 9 km S of Pole Ojea, Puerto Rico
  2. 2.4 14 km SSW of Tallaboa, Puerto Rico
  3. 2.1 7 km WSW of Guánica, Puerto Rico
  4. 2.3 2 km NNE of Mayagüez, Puerto Rico
  5. 1.7 Puerto Rico region
  6. 1.8 12 km SSW of La Parguera, Puerto Rico
  7. 2.5 4 km WSW of Las Marías, Puerto Rico
  8. 2.3 0 km WNW of Liborio Negron Torres, Puerto Rico
  9. 1.9 13 km S of Ponce, Puerto Rico
  10. 2.3 15 km S of Guánica, Puerto Rico
  11. 2.2 9 km WNW of Puerto Real, Puerto Rico
  12. 2.0 6 km SSW of Palmarejo, Puerto Rico
  13. 2.3 20 km SSW of Guánica, Puerto Rico
  14. 2.0 12 km S of La Parguera, Puerto Rico
  15. 1.9 5 km SW 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

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