QuakeIndex

Earthquake · reviewed by a seismologist

M 3.0md

88 km N of Culebra, Puerto Rico

· 29 km deep · released about 830 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Culebra Municipio 86 kmFajardo Municipio 88 kmLuquillo Municipio 96 kmRío Grande Municipio 101 kmCeiba Municipio 103 kmLoíza Municipio 106 kmVieques Municipio 110 kmCanóvanas Municipio 111 kmCarolina Municipio 111 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
29 km below the surface
Felt
no reports yet
Nearest
Culebra Municipio, 86 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 792 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 19.0942, -65.2110. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Culebra Municipio, PR 86 km (53 mi) N of here earthquakes near Culebra Municipio
Fajardo Municipio, PR 88 km (55 mi) NNE of here earthquakes near Fajardo Municipio
Luquillo Municipio, PR 96 km (60 mi) NNE of here earthquakes near Luquillo Municipio
Río Grande Municipio, PR 101 km (63 mi) NE of here earthquakes near Río Grande Municipio
Ceiba Municipio, PR 103 km (64 mi) NNE of here earthquakes near Ceiba Municipio
Loíza Municipio, PR 106 km (66 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

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

  1. 3.3 92 km N of Charlotte Amalie, U.S. Virgin Islands
  2. 3.4 89 km N of Charlotte Amalie, U.S. Virgin Islands
  3. 3.4 83 km N of Cruz Bay, U.S. Virgin Islands
  4. 3.7 123 km NNE of Vieques, Puerto Rico
  5. 3.7 126 km N of Charlotte Amalie, U.S. Virgin Islands
  6. 3.6 133 km N of Culebra, Puerto Rico
  7. 3.7 128 km N of Culebra, Puerto Rico
  8. 3.8 130 km NNE of Vieques, Puerto Rico
  9. 3.1 68 km NNE of Vieques, Puerto Rico
  10. 3.8 130 km NNE of Vieques, Puerto Rico
  11. 3.4 84 km N of Charlotte Amalie, U.S. Virgin Islands
  12. 3.7 87 km NNE of Vieques, Puerto Rico
  13. 3.7 86 km NNE of Vieques, Puerto Rico
  14. 3.1 52 km NNW of Charlotte Amalie, U.S. Virgin Islands
  15. 3.6 75 km N of Cruz Bay, 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 5.0 on 2021-02-06 — it released about 1,100 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.