QuakeIndex

Earthquake · reviewed by a seismologist

M 3.0md

75 km N of Culebra, Puerto Rico

· 59 km deep · released about 830 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Fajardo Municipio 71 kmCulebra Municipio 74 kmLuquillo Municipio 78 kmRío Grande Municipio 82 kmLoíza Municipio 85 kmCeiba Municipio 86 kmCarolina Municipio 91 kmCanóvanas Municipio 91 kmNaguabo Municipio 94 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 3.0 (md)
Depth
59 km below the surface
Felt
no reports yet
Nearest
Fajardo Municipio, 71 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3330 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 830 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.0 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 410,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 18,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 13,000× the energy of this one
  4. This earthquake M 3.0 about 830 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 18.9860, -65.3686. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Fajardo Municipio, PR 71 km (44 mi) NNE of here earthquakes near Fajardo Municipio
Culebra Municipio, PR 74 km (46 mi) N of here earthquakes near Culebra Municipio
Luquillo Municipio, PR 78 km (48 mi) NNE of here earthquakes near Luquillo Municipio
Río Grande Municipio, PR 82 km (51 mi) NNE of here earthquakes near Río Grande Municipio
Loíza Municipio, PR 85 km (53 mi) NE of here earthquakes near Loíza Municipio
Ceiba Municipio, PR 86 km (53 mi) NNE of here earthquakes near Ceiba 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. 2.0 68 km N of Culebra, Puerto Rico
  2. 2.7 62 km NNE of Luquillo, Puerto Rico
  3. 2.5 117 km NNW of Charlotte Amalie, U.S. Virgin Islands
  4. 2.4 75 km N of Charlotte Amalie, U.S. Virgin Islands
  5. 2.5 46 km NNE of Vieques, Puerto Rico
  6. 3.3 Puerto Rico region
  7. 2.4 104 km NNW of Charlotte Amalie, U.S. Virgin Islands
  8. 2.6 122 km N of Culebra, Puerto Rico
  9. 1.9 72 km N of Culebra, Puerto Rico
  10. 3.0 77 km N of Charlotte Amalie, U.S. Virgin Islands
  11. 2.1 73 km N of Culebra, Puerto Rico
  12. 2.7 63 km N of Charlotte Amalie, U.S. Virgin Islands
  13. 1.6 66 km NNW of Charlotte Amalie, U.S. Virgin Islands
  14. 1.8 76 km NNW of Charlotte Amalie, U.S. Virgin Islands
  15. 2.5 73 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 4.3 on 2016-09-04 — it released about 100 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.