QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8Md

0 km NW of Luis Llorens Torres, Puerto Rico

· 15 km deep · released about 15 lb of TNT

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10 km30 km60 km120 km N Juana Díaz Municipio 8 kmVillalba Municipio 10 kmPonce Municipio 10 kmJayuya Municipio 17 kmCoamo Municipio 19 kmSanta Isabel Municipio 20 kmOrocovis Municipio 20 kmPeñuelas Municipio 21 kmCiales Municipio 26 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
15 km below the surface
Felt
no reports yet
Nearest
Juana Díaz Municipio, 8 km SSE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3715 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 18.0625, -66.5327. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Juana Díaz Municipio, PR 8 km (5 mi) NNW of here earthquakes near Juana Díaz Municipio
Villalba Municipio, PR 10 km (6 mi) SW of here earthquakes near Villalba Municipio
Ponce Municipio, PR 10 km (6 mi) NE of here earthquakes near Ponce Municipio
Jayuya Municipio, PR 17 km (11 mi) SSE of here earthquakes near Jayuya Municipio
Coamo Municipio, PR 19 km (12 mi) WSW of here earthquakes near Coamo Municipio
Santa Isabel Municipio, PR 20 km (12 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

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

  1. 2.3 7 km SSE of Lares, Puerto Rico
  2. 2.4 2 km NE of Playita Cortada, Puerto Rico
  3. 2.9 5 km SSE of Maria Antonia, Puerto Rico
  4. 1.5 8 km SSE of Jauca, Puerto Rico
  5. 2.7 9 km SSE of Jauca, Puerto Rico
  6. 2.4 12 km S of Lares, Puerto Rico
  7. 3.0 5 km ESE of Naranjito, Puerto Rico
  8. 2.0 8 km ESE of Maricao, Puerto Rico
  9. 2.5 6 km SE of G. L. Garcia, Puerto Rico
  10. 2.5 16 km S of Jobos, Puerto Rico
  11. 1.6 7 km SW of Capitanejo, Puerto Rico
  12. 2.1 9 km SSW of Tallaboa, Puerto Rico
  13. 1.7 5 km N of Santo Domingo, Puerto Rico
  14. 3.0 1 km SE of Vega Alta, Puerto Rico
  15. 2.0 8 km WNW 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

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