QuakeIndex

Earthquake · reviewed by a seismologist

M 1.5md

5 km WSW of Naranjito, Puerto Rico

· 35 km deep · released about 5.6 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Naranjito Municipio 4 kmCorozal Municipio 5 kmBarranquitas Municipio 9 kmComerío Municipio 9 kmToa Alta Municipio 11 kmMorovis Municipio 15 kmBayamón Municipio 15 kmAibonito Municipio 17 kmAguas Buenas Municipio 17 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 1.5 (md)
Depth
35 km below the surface
Felt
no reports yet
Nearest
Naranjito Municipio, 4 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2576 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 5.6 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,700,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,900,000× the energy of this one
  3. Around the size people start to feel M 3.0 170× the energy of this one
  4. This earthquake M 1.5 about 5.6 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 18.2788, -66.2875. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Naranjito Municipio, PR 4 km (2 mi) WSW of here earthquakes near Naranjito Municipio
Corozal Municipio, PR 5 km (3 mi) SE of here earthquakes near Corozal Municipio
Barranquitas Municipio, PR 9 km (6 mi) NNE of here earthquakes near Barranquitas Municipio
Comerío Municipio, PR 9 km (6 mi) NW of here earthquakes near Comerío Municipio
Toa Alta Municipio, PR 11 km (7 mi) SSW of here earthquakes near Toa Alta Municipio
Morovis Municipio, PR 15 km (9 mi) ESE of here earthquakes near Morovis Municipio

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

Aftershocks so far

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

  1. 2.2 12 km NNW of Tierras Nuevas Poniente, Puerto Rico
  2. 1.8 1 km ESE of Mariano Colón, Puerto Rico
  3. 2.3 1 km E of Corozal, Puerto Rico
  4. 1.6 2 km SE of El Ojo, Puerto Rico
  5. 1.7 1 km W of Jauca, Puerto Rico
  6. 1.9 2 km SW of Adjuntas, Puerto Rico
  7. 2.1 0 km N of Salinas, Puerto Rico
  8. 2.3 10 km S of Salinas, Puerto Rico
  9. 2.2 4 km ESE of Bayamon, Puerto Rico
  10. 2.9 12 km N of Brenas, Puerto Rico
  11. 1.6 10 km SSW of Potala Pastillo, Puerto Rico
  12. 1.6 2 km NNW of Jagual, Puerto Rico
  13. 1.6 1 km NNE of Parcelas Nuevas, Puerto Rico
  14. 2.5 25 km NNE of Brenas, Puerto Rico
  15. 1.9 11 km N of Dorado, 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.

For this area

The largest earthquake within 50 km in our catalogue was M 4.6 on 2019-03-12 — it released about 43,000 times the energy of this one.

From the QuakeIndex catalogue, built from the USGS FDSN event service.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.