QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6md

2 km NW of Maricao, Puerto Rico

· 13 km deep · released about 7.6 lb of TNT

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10 km30 km60 km120 km N Las Marías Municipio 4 kmMaricao Municipio 7 kmSan Germán Municipio 11 kmSabana Grande Municipio 14 kmHormigueros Municipio 15 kmSan Sebastián Municipio 15 kmLares Municipio 16 kmAñasco Municipio 17 kmYauco Municipio 19 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
13 km below the surface
Felt
no reports yet
Nearest
Las Marías Municipio, 4 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3094 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 7.6 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,000,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,400,000× the energy of this one
  3. Around the size people start to feel M 3.0 130× the energy of this one
  4. This earthquake M 1.6 about 7.6 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 18.1985, -66.9948. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Las Marías Municipio, PR 4 km (2 mi) SSW of here earthquakes near Las Marías Municipio
Maricao Municipio, PR 7 km (4 mi) WNW of here earthquakes near Maricao Municipio
San Germán Municipio, PR 11 km (7 mi) NNE of here earthquakes near San Germán Municipio
Sabana Grande Municipio, PR 14 km (8 mi) NNW of here earthquakes near Sabana Grande Municipio
Hormigueros Municipio, PR 15 km (9 mi) ENE of here earthquakes near Hormigueros Municipio
San Sebastián Municipio, PR 15 km (9 mi) S of here earthquakes near San Sebastián Municipio

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

Aftershocks so far

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

  1. 2.8 12 km N of Quebradillas, Puerto Rico
  2. 2.5 18 km W of Rincón, Puerto Rico
  3. 1.9 19 km ESE of Puerto Real, Puerto Rico
  4. 2.4 Puerto Rico region
  5. 2.1 10 km SSE of Pole Ojea, Puerto Rico
  6. 2.8 8 km SSW of Stella, Puerto Rico
  7. 2.0 4 km SE of Ponce, Puerto Rico
  8. 2.6 7 km SW of La Playa, Puerto Rico
  9. 1.7 3 km ESE of Ponce, Puerto Rico
  10. 1.9 5 km ESE of Ponce, Puerto Rico
  11. 2.0 3 km S of Boquerón, Puerto Rico
  12. 2.0 8 km WSW of Adjuntas, Puerto Rico
  13. 2.9 12 km NNE of Isabela, Puerto Rico
  14. 2.4 1 km N of Puerto Real, Puerto Rico
  15. 1.9 4 km ESE of Ponce, 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.