QuakeIndex

Earthquake · reviewed by a seismologist

M 2.8md

4 km WNW of Candelero Arriba, Puerto Rico

· 71 km deep · released about 400 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Yabucoa Municipio 7 kmLas Piedras Municipio 7 kmHumacao Municipio 10 kmSan Lorenzo Municipio 11 kmJuncos Municipio 12 kmMaunabo Municipio 14 kmPatillas Municipio 18 kmNaguabo Municipio 18 kmGurabo Municipio 20 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
71 km below the surface
Felt
no reports yet
Nearest
Yabucoa Municipio, 7 km SSE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 644 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 400 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 38,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 27,000× the energy of this one
  3. Around the size people start to feel M 3.0 2.4× the energy of this one
  4. This earthquake M 2.8 about 400 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 18.1215, -65.8762. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Yabucoa Municipio, PR 7 km (4 mi) NNW of here earthquakes near Yabucoa Municipio
Las Piedras Municipio, PR 7 km (5 mi) S of here earthquakes near Las Piedras Municipio
Humacao Municipio, PR 10 km (6 mi) W of here earthquakes near Humacao Municipio
San Lorenzo Municipio, PR 11 km (7 mi) ESE of here earthquakes near San Lorenzo Municipio
Juncos Municipio, PR 12 km (7 mi) SSE of here earthquakes near Juncos Municipio
Maunabo Municipio, PR 14 km (9 mi) N of here earthquakes near Maunabo Municipio

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

Aftershocks so far

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

  1. 2.1 5 km SSE of Bajandas, Puerto Rico
  2. 2.6 3 km ESE of Cataño, Puerto Rico
  3. 3.1 1 km S of Campanilla, Puerto Rico
  4. 2.3 1 km SSE of Salinas, Puerto Rico
  5. 2.4 4 km SW of Las Piedras, Puerto Rico
  6. 2.0 8 km SE of Jobos, Puerto Rico
  7. 2.3 8 km SSE of Jobos, Puerto Rico
  8. 3.1 2 km NW of Hato Candal, Puerto Rico
  9. 3.4 2 km N of Pueblito del Rio, Puerto Rico
  10. 1.6 2 km S of G. L. Garcia, Puerto Rico
  11. 2.2 1 km W of Naranjito, Puerto Rico
  12. 2.2 3 km ESE of G. L. Garcia, Puerto Rico
  13. 2.4 4 km SW of Las Piedras, Puerto Rico
  14. 2.5 2 km SE of Esperanza, Puerto Rico
  15. 2.2 4 km SSW of Las Piedras, 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 2016-12-05 — it released about 600 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.