QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8md

8 km S of Potala Pastillo, Puerto Rico

· 15 km deep · released about 14 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Juana Díaz Municipio 9 kmSanta Isabel Municipio 13 kmPonce Municipio 15 kmVillalba Municipio 24 kmCoamo Municipio 26 kmSalinas Municipio 26 kmPeñuelas Municipio 27 kmGuayanilla Municipio 33 kmJayuya Municipio 34 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, 9 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3072 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 14 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 1,100,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 760,000× the energy of this one
  3. Around the size people start to feel M 3.0 68× the energy of this one
  4. This earthquake M 1.8 about 14 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 17.9146, -66.5016. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Juana Díaz Municipio, PR 9 km (6 mi) S of here earthquakes near Juana Díaz Municipio
Santa Isabel Municipio, PR 13 km (8 mi) WSW of here earthquakes near Santa Isabel Municipio
Ponce Municipio, PR 15 km (9 mi) SE of here earthquakes near Ponce Municipio
Villalba Municipio, PR 24 km (15 mi) S of here earthquakes near Villalba Municipio
Coamo Municipio, PR 26 km (16 mi) SW of here earthquakes near Coamo Municipio
Salinas Municipio, PR 26 km (16 mi) WSW of here earthquakes near Salinas Municipio

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

Aftershocks so far

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

  1. 1.8 5 km SSW of Salinas, Puerto Rico
  2. 1.6 8 km SSW of Guánica, Puerto Rico
  3. 2.1 2 km NE of Lluveras, Puerto Rico
  4. 1.6 4 km WNW of Fuig, Puerto Rico
  5. 2.0 13 km N of Yauco, Puerto Rico
  6. 2.1 15 km SSE of Tallaboa, Puerto Rico
  7. 1.6 2 km WSW of Coamo, Puerto Rico
  8. 1.8 3 km NNW of Tallaboa, Puerto Rico
  9. 2.9 3 km N of Palomas, Puerto Rico
  10. 2.2 Puerto Rico region
  11. 1.9 3 km NNE of Río Cañas Abajo, Puerto Rico
  12. 1.6 2 km W of Potala Pastillo, Puerto Rico
  13. 2.4 8 km SSE of Jauca, Puerto Rico
  14. 1.8 2 km E of Aguilita, Puerto Rico
  15. 2.2 2 km E of Arroyo, 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.