QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7md

1 km ESE of Guayabal, Puerto Rico

· 7.0 km deep · released about 12 lb of TNT

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10 km30 km60 km120 km N Villalba Municipio 6 kmJuana Díaz Municipio 9 kmCoamo Municipio 14 kmPonce Municipio 15 kmOrocovis Municipio 17 kmSanta Isabel Municipio 17 kmJayuya Municipio 18 kmBarranquitas Municipio 23 kmAibonito 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 1.7 (md)
Depth
7.0 km below the surface
Felt
no reports yet
Nearest
Villalba Municipio, 6 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3043 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 12 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,300,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 900,000× the energy of this one
  3. Around the size people start to feel M 3.0 80× the energy of this one
  4. This earthquake M 1.7 about 12 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 18.0751, -66.4870. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Villalba Municipio, PR 6 km (4 mi) SSW of here earthquakes near Villalba Municipio
Juana Díaz Municipio, PR 9 km (5 mi) N of here earthquakes near Juana Díaz Municipio
Coamo Municipio, PR 14 km (9 mi) WSW of here earthquakes near Coamo Municipio
Ponce Municipio, PR 15 km (9 mi) ENE of here earthquakes near Ponce Municipio
Orocovis Municipio, PR 17 km (10 mi) SSW of here earthquakes near Orocovis Municipio
Santa Isabel Municipio, PR 17 km (11 mi) NW of here earthquakes near Santa Isabel Municipio

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

Aftershocks so far

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

  1. 1.9 1 km NE of Indios, Puerto Rico
  2. 2.4 18 km SSE of Maria Antonia, Puerto Rico
  3. 1.7 1 km S of Adjuntas, Puerto Rico
  4. 2.6 18 km SSE of Maria Antonia, Puerto Rico
  5. 2.2 23 km SSE of Maria Antonia, Puerto Rico
  6. 2.7 16 km S of Indios, Puerto Rico
  7. 2.8 19 km SSE of Maria Antonia, Puerto Rico
  8. 2.5 18 km SSE of Maria Antonia, Puerto Rico
  9. 2.0 4 km ESE of Maria Antonia, Puerto Rico
  10. 1.5 0 km NNW of Buena Vista, Puerto Rico
  11. 2.4 14 km S of Tallaboa, Puerto Rico
  12. 1.9 5 km ENE of G. L. Garcia, Puerto Rico
  13. 1.6 1 km SW of Adjuntas, Puerto Rico
  14. 1.9 0 km SE of Adjuntas, Puerto Rico
  15. 1.9 1 km NE of Adjuntas, 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.