QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6md

7 km NE of Sabana Grande, Puerto Rico

· 19 km deep · released about 8.7 lb of TNT

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10 km30 km60 km120 km N Maricao Municipio 6 kmSabana Grande Municipio 6 kmYauco Municipio 7 kmLas Marías Municipio 13 kmSan Germán Municipio 13 kmLares Municipio 17 kmAdjuntas Municipio 17 kmGuayanilla Municipio 18 kmGuánica Municipio 20 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
19 km below the surface
Felt
no reports yet
Nearest
Maricao Municipio, 6 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2700 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 8.7 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 1,700,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,200,000× the energy of this one
  3. Around the size people start to feel M 3.0 110× the energy of this one
  4. This earthquake M 1.6 about 8.7 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 18.1283, -66.9121. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Maricao Municipio, PR 6 km (4 mi) SSE of here earthquakes near Maricao Municipio
Sabana Grande Municipio, PR 6 km (4 mi) NE of here earthquakes near Sabana Grande Municipio
Yauco Municipio, PR 7 km (5 mi) NW of here earthquakes near Yauco Municipio
Las Marías Municipio, PR 13 km (8 mi) SSE of here earthquakes near Las Marías Municipio
San Germán Municipio, PR 13 km (8 mi) E of here earthquakes near San Germán Municipio
Lares Municipio, PR 17 km (11 mi) SSW of here earthquakes near Lares Municipio

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

Aftershocks so far

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

  1. 2.1 14 km NW of Puerto Real, Puerto Rico
  2. 1.8 4 km SW of Juncal, Puerto Rico
  3. 1.6 8 km NE of Sabana Grande, Puerto Rico
  4. 1.8 6 km ESE of Jayuya, Puerto Rico
  5. 1.9 6 km NW of Villalba, Puerto Rico
  6. 1.9 4 km SSW of Adjuntas, Puerto Rico
  7. 1.9 6 km SE of Maricao, Puerto Rico
  8. 1.9 9 km ENE of Jayuya, Puerto Rico
  9. 2.0 4 km ENE of Las Marías, Puerto Rico
  10. 2.1 7 km SW of Mayagüez, Puerto Rico
  11. 2.2 7 km WSW of Mayagüez, Puerto Rico
  12. 2.4 6 km NNE of Hatillo, Puerto Rico
  13. 2.3 2 km NE of Rincón, Puerto Rico
  14. 2.1 6 km SE of Maricao, Puerto Rico
  15. 2.8 20 km SW of Stella, 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.