QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6md

5 km S of Piedra Gorda, Puerto Rico

· 26 km deep · released about 9 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Camuy Municipio 7 kmQuebradillas Municipio 10 kmSan Sebastián Municipio 11 kmHatillo Municipio 11 kmLares Municipio 12 kmIsabela Municipio 17 kmLas Marías Municipio 20 kmMoca Municipio 20 kmArecibo Municipio 23 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
26 km below the surface
Felt
no reports yet
Nearest
Camuy Municipio, 7 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2698 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 9 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 9 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 18.3868, -66.8860. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Camuy Municipio, PR 7 km (4 mi) SSW of here earthquakes near Camuy Municipio
Quebradillas Municipio, PR 10 km (6 mi) SSE of here earthquakes near Quebradillas Municipio
San Sebastián Municipio, PR 11 km (7 mi) NE of here earthquakes near San Sebastián Municipio
Hatillo Municipio, PR 11 km (7 mi) WSW of here earthquakes near Hatillo Municipio
Lares Municipio, PR 12 km (8 mi) N of here earthquakes near Lares Municipio
Isabela Municipio, PR 17 km (11 mi) SE of here earthquakes near Isabela Municipio

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

Aftershocks so far

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

  1. 2.3 9 km ESE of Maricao, Puerto Rico
  2. 2.9 17 km N of Hatillo, Puerto Rico
  3. 2.6 3 km WSW of Ciales, Puerto Rico
  4. 2.1 14 km NW of Puerto Real, Puerto Rico
  5. 1.8 4 km SW of Juncal, Puerto Rico
  6. 1.6 8 km NE of Sabana Grande, Puerto Rico
  7. 1.8 6 km ESE of Jayuya, Puerto Rico
  8. 1.9 6 km NW of Villalba, Puerto Rico
  9. 2.2 18 km NW of Aguadilla, Puerto Rico
  10. 1.9 4 km SSW of Adjuntas, Puerto Rico
  11. 1.9 6 km SE of Maricao, Puerto Rico
  12. 1.9 9 km ENE of Jayuya, Puerto Rico
  13. 2.4 36 km NNE of Isabela, Puerto Rico
  14. 2.0 4 km ENE of Las Marías, Puerto Rico
  15. 2.5 2 km E of Tierras Nuevas Poniente, 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.