QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8Md

2 km WSW of Villalba, Puerto Rico

· 12 km deep · released about 15 lb of TNT

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10 km30 km60 km120 km N Villalba Municipio 5 kmJayuya Municipio 13 kmJuana Díaz Municipio 13 kmOrocovis Municipio 14 kmPonce Municipio 16 kmCoamo Municipio 17 kmCiales Municipio 20 kmSanta Isabel Municipio 23 kmBarranquitas 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 1.8 (Md)
Depth
12 km below the surface
Felt
no reports yet
Nearest
Villalba Municipio, 5 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3465 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 15 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,000,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 710,000× the energy of this one
  3. Around the size people start to feel M 3.0 63× the energy of this one
  4. This earthquake M 1.8 about 15 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 18.1154, -66.5150. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Villalba Municipio, PR 5 km (3 mi) WSW of here earthquakes near Villalba Municipio
Jayuya Municipio, PR 13 km (8 mi) SE of here earthquakes near Jayuya Municipio
Juana Díaz Municipio, PR 13 km (8 mi) N of here earthquakes near Juana Díaz Municipio
Orocovis Municipio, PR 14 km (9 mi) SW of here earthquakes near Orocovis Municipio
Ponce Municipio, PR 16 km (10 mi) NE of here earthquakes near Ponce Municipio
Coamo Municipio, PR 17 km (10 mi) W of here earthquakes near Coamo 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. 2.2 0 km SSE of Tallaboa, Puerto Rico
  2. 1.7 11 km NE of Sabana Grande, Puerto Rico
  3. 1.7 23 km S of Tallaboa, Puerto Rico
  4. 1.9 Puerto Rico region
  5. 2.1 10 km ESE of Maricao, Puerto Rico
  6. 3.4 2 km NNE of Barahona, Puerto Rico
  7. 2.1 Puerto Rico region
  8. 2.5 2 km WNW of Parcelas Nuevas, Puerto Rico
  9. 2.1 2 km S of Guayanilla, Puerto Rico
  10. 2.4 3 km SW of Río Lajas, Puerto Rico
  11. 1.8 0 km NNE of Ciales, Puerto Rico
  12. 2.6 7 km SE of Jobos, Puerto Rico
  13. 2.4 4 km W of Central Aguirre, Puerto Rico
  14. 2.6 6 km ENE of Tierras Nuevas Poniente, Puerto Rico
  15. 2.1 13 km SSE of Guánica, 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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