QuakeIndex

Earthquake · reviewed by a seismologist

M 2.8md

1 km SE of Naranjito, Puerto Rico

· 14 km deep · released about 490 lb of TNT

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10 km30 km60 km120 km N Naranjito Municipio 2 kmComerío Municipio 7 kmToa Alta Municipio 8 kmCorozal Municipio 10 kmBayamón Municipio 10 kmAguas Buenas Municipio 12 kmBarranquitas Municipio 13 kmGuaynabo Municipio 14 kmCidra Municipio 15 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 2.8 (md)
Depth
14 km below the surface
Felt
no reports yet
Nearest
Naranjito Municipio, 2 km W
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 724 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

How big was it?

This earthquake released about 490 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 31,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 22,000× the energy of this one
  3. Around the size people start to feel M 3.0 1.9× the energy of this one
  4. This earthquake M 2.8 about 490 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 18.2888, -66.2362. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Naranjito Municipio, PR 2 km (1 mi) E of here earthquakes near Naranjito Municipio
Comerío Municipio, PR 7 km (5 mi) NNW of here earthquakes near Comerío Municipio
Toa Alta Municipio, PR 8 km (5 mi) S of here earthquakes near Toa Alta Municipio
Corozal Municipio, PR 10 km (6 mi) E of here earthquakes near Corozal Municipio
Bayamón Municipio, PR 10 km (6 mi) SW of here earthquakes near Bayamón Municipio
Aguas Buenas Municipio, PR 12 km (7 mi) WNW of here earthquakes near Aguas Buenas Municipio

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

Aftershocks so far

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

  1. 2.0 4 km NNW of Jobos, Puerto Rico
  2. 2.5 5 km NNW of Jagual, Puerto Rico
  3. 3.3 2 km NNW of La Luisa, Puerto Rico
  4. 1.8 4 km NNW of Yaurel, Puerto Rico
  5. 3.2 10 km NNW of Garrochales, Puerto Rico
  6. 2.8 0 km SW of Santa Isabel, Puerto Rico
  7. 2.2 2 km WSW of Potala Pastillo, Puerto Rico
  8. 2.8 16 km N of Tierras Nuevas Poniente, Puerto Rico
  9. 3.2 3 km SE of Bartolo, Puerto Rico
  10. 2.9 9 km NNE of Brenas, Puerto Rico
  11. 2.3 8 km SSW of Orocovis, Puerto Rico
  12. 2.5 5 km WSW of Ciales, Puerto Rico
  13. 2.0 6 km NW of Palomas, Puerto Rico
  14. 2.8 6 km WNW of Palomas, Puerto Rico
  15. 2.2 7 km NW of Palomas, 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 480 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.