QuakeIndex

Earthquake · reviewed by a seismologist

M 2.8md

60 km N of Culebra, Puerto Rico

· 19 km deep · released about 530 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Culebra Municipio 58 kmFajardo Municipio 65 kmLuquillo Municipio 75 kmCeiba Municipio 79 kmRío Grande Municipio 81 kmVieques Municipio 83 kmLoíza Municipio 89 kmNaguabo Municipio 90 kmCanóvanas Municipio 92 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
19 km below the surface
Felt
no reports yet
Nearest
Culebra Municipio, 58 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2763 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 530 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 29,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 20,000× the energy of this one
  3. Around the size people start to feel M 3.0 1.8× the energy of this one
  4. This earthquake M 2.8 about 530 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 18.8376, -65.2021. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Culebra Municipio, PR 58 km (36 mi) N of here earthquakes near Culebra Municipio
Fajardo Municipio, PR 65 km (40 mi) NE of here earthquakes near Fajardo Municipio
Luquillo Municipio, PR 75 km (46 mi) NE of here earthquakes near Luquillo Municipio
Ceiba Municipio, PR 79 km (49 mi) NE of here earthquakes near Ceiba Municipio
Río Grande Municipio, PR 81 km (50 mi) NE of here earthquakes near Río Grande Municipio
Vieques Municipio, PR 83 km (51 mi) NNE of here earthquakes near Vieques Municipio

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

Aftershocks so far

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

  1. 3.3 29 km NNW of Charlotte Amalie, U.S. Virgin Islands
  2. 3.1 59 km N of Culebra, Puerto Rico
  3. 2.6 35 km N of Charlotte Amalie, U.S. Virgin Islands
  4. 2.9 29 km NE of Fajardo, Puerto Rico
  5. 3.0 78 km NNE of Luquillo, Puerto Rico
  6. 2.6 72 km NNE of Luquillo, Puerto Rico
  7. 2.8 76 km N of Culebra, Puerto Rico
  8. 2.9 70 km NNE of Luquillo, Puerto Rico
  9. 2.8 74 km N of Culebra, Puerto Rico
  10. 2.8 Puerto Rico region
  11. 3.2 55 km NNW of Charlotte Amalie, U.S. Virgin Islands
  12. 2.7 57 km NNE of Culebra, Puerto Rico
  13. 2.9 64 km N of Charlotte Amalie, U.S. Virgin Islands
  14. 2.7 101 km N of Charlotte Amalie, U.S. Virgin Islands
  15. 2.6 91 km N of Culebra, 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 4.5 on 2018-02-09 — it released about 320 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.