QuakeIndex

Earthquake · reviewed by a seismologist

M 2.9md

78 km N of Culebra, Puerto Rico

· 41 km deep · released about 680 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Fajardo Municipio 75 kmCulebra Municipio 76 kmLuquillo Municipio 83 kmRío Grande Municipio 87 kmCeiba Municipio 90 kmLoíza Municipio 91 kmCanóvanas Municipio 97 kmCarolina Municipio 97 kmVieques Municipio 99 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 2.9 (md)
Depth
41 km below the surface
Felt
no reports yet
Nearest
Fajardo Municipio, 75 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2608 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 680 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 22,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 16,000× the energy of this one
  3. Around the size people start to feel M 3.0 1.4× the energy of this one
  4. This earthquake M 2.9 about 680 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 19.0088, -65.3113. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Fajardo Municipio, PR 75 km (47 mi) NNE of here earthquakes near Fajardo Municipio
Culebra Municipio, PR 76 km (47 mi) N of here earthquakes near Culebra Municipio
Luquillo Municipio, PR 83 km (51 mi) NNE of here earthquakes near Luquillo Municipio
Río Grande Municipio, PR 87 km (54 mi) NE of here earthquakes near Río Grande Municipio
Ceiba Municipio, PR 90 km (56 mi) NNE of here earthquakes near Ceiba Municipio
Loíza Municipio, PR 91 km (57 mi) NE of here earthquakes near Loíza Municipio

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

Aftershocks so far

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

  1. 2.9 127 km NNE of Vieques, Puerto Rico
  2. 2.6 102 km NNW of Charlotte Amalie, U.S. Virgin Islands
  3. 4.0 102 km N of Charlotte Amalie, U.S. Virgin Islands
  4. 2.7 96 km NNE of Luquillo, Puerto Rico
  5. 2.7 63 km N of Charlotte Amalie, U.S. Virgin Islands
  6. 2.8 123 km NNW of Charlotte Amalie, U.S. Virgin Islands
  7. 2.8 71 km N of Charlotte Amalie, U.S. Virgin Islands
  8. 2.5 117 km NNE of Vieques, Puerto Rico
  9. 2.4 45 km NNW of Charlotte Amalie, U.S. Virgin Islands
  10. 3.0 59 km N of Culebra, Puerto Rico
  11. 2.2 44 km NE of Luquillo, Puerto Rico
  12. 2.3 48 km NNW of Charlotte Amalie, U.S. Virgin Islands
  13. 2.1 37 km NNW of Culebra, Puerto Rico
  14. 2.9 70 km N of Culebra, Puerto Rico
  15. 2.3 84 km NNW of Charlotte Amalie, U.S. Virgin Islands

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 250 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.