QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1md

85 km N of Charlotte Amalie, U.S. Virgin Islands

· 45 km deep · released about 37 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Culebra Municipio 91 kmFajardo Municipio 98 kmLuquillo Municipio 107 kmCeiba Municipio 112 kmRío Grande Municipio 113 kmVieques Municipio 116 kmLoíza Municipio 119 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 2.1 (md)
Depth
45 km below the surface
Felt
no reports yet
Nearest
Culebra Municipio, 91 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3411 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

How big was it?

This earthquake released about 37 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.1 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 410,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 290,000× the energy of this one
  3. Around the size people start to feel M 3.0 26× the energy of this one
  4. This earthquake M 2.1 about 37 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 19.1053, -65.0518. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Culebra Municipio, PR 91 km (56 mi) NNE of here earthquakes near Culebra Municipio
Fajardo Municipio, PR 98 km (61 mi) NE of here earthquakes near Fajardo Municipio
Luquillo Municipio, PR 107 km (67 mi) NE of here earthquakes near Luquillo Municipio
Ceiba Municipio, PR 112 km (70 mi) NNE of here earthquakes near Ceiba Municipio
Río Grande Municipio, PR 113 km (70 mi) NE of here earthquakes near Río Grande Municipio
Vieques Municipio, PR 116 km (72 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

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

  1. 3.3 107 km N of Charlotte Amalie, U.S. Virgin Islands
  2. 2.2 75 km N of Cruz Bay, U.S. Virgin Islands
  3. 1.6 72 km N of Cruz Bay, U.S. Virgin Islands
  4. 2.4 79 km N of Charlotte Amalie, U.S. Virgin Islands
  5. 2.1 77 km N of Charlotte Amalie, U.S. Virgin Islands
  6. 2.2 87 km N of Cruz Bay, U.S. Virgin Islands
  7. 3.2 84 km N of Cruz Bay, U.S. Virgin Islands
  8. 1.9 Puerto Rico region
  9. 2.3 65 km N of Charlotte Amalie, U.S. Virgin Islands
  10. 2.6 90 km N of Culebra, Puerto Rico
  11. 2.3 44 km N of Culebra, Puerto Rico
  12. 2.2 44 km N of Culebra, Puerto Rico
  13. 2.3 83 km NNE of Luquillo, Puerto Rico
  14. 2.5 Puerto Rico region
  15. 2.3 76 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 4.3 on 2016-09-04 — it released about 2,300 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.