QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6md

2 km WSW of Coamo, Puerto Rico

· 8.0 km deep · released about 8.7 lb of TNT

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10 km30 km60 km120 km N Coamo Municipio 4 kmVillalba Municipio 12 kmSanta Isabel Municipio 13 kmAibonito Municipio 13 kmJuana Díaz Municipio 15 kmBarranquitas Municipio 16 kmSalinas Municipio 16 kmOrocovis Municipio 18 kmComerío Municipio 24 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
8.0 km below the surface
Felt
no reports yet
Nearest
Coamo Municipio, 4 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3051 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 18.0708, -66.3745. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Coamo Municipio, PR 4 km (3 mi) SSW of here earthquakes near Coamo Municipio
Villalba Municipio, PR 12 km (8 mi) ESE of here earthquakes near Villalba Municipio
Santa Isabel Municipio, PR 13 km (8 mi) N of here earthquakes near Santa Isabel Municipio
Aibonito Municipio, PR 13 km (8 mi) WSW of here earthquakes near Aibonito Municipio
Juana Díaz Municipio, PR 15 km (9 mi) ENE of here earthquakes near Juana Díaz Municipio
Barranquitas Municipio, PR 16 km (10 mi) SSW of here earthquakes near Barranquitas Municipio

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

Aftershocks so far

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

  1. 2.5 4 km NNE of Guaynabo, Puerto Rico
  2. 1.5 0 km NNW of Buena Vista, Puerto Rico
  3. 2.4 14 km S of Tallaboa, Puerto Rico
  4. 1.9 5 km ENE of G. L. Garcia, Puerto Rico
  5. 1.6 1 km SW of Adjuntas, Puerto Rico
  6. 1.9 0 km SE of Adjuntas, Puerto Rico
  7. 1.9 1 km NE of Adjuntas, Puerto Rico
  8. 1.8 1 km SSW of Adjuntas, Puerto Rico
  9. 2.5 2 km S of Adjuntas, Puerto Rico
  10. 2.4 1 km SSW of Adjuntas, Puerto Rico
  11. 2.6 2 km SSW of Adjuntas, Puerto Rico
  12. 2.2 6 km SSW of Lamboglia, Puerto Rico
  13. 2.3 8 km NNE of Jayuya, Puerto Rico
  14. 1.9 11 km SSE of Jauca, Puerto Rico
  15. 2.1 1 km NE of Guayanilla, 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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