QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1Md

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

· 7.0 km deep · released about 43 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Culebra Municipio 65 kmFajardo Municipio 80 kmLuquillo Municipio 91 kmVieques Municipio 91 kmCeiba Municipio 92 kmRío Grande Municipio 98 kmNaguabo Municipio 104 kmLoíza Municipio 108 kmCanóvanas Municipio 109 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
7.0 km below the surface
Felt
no reports yet
Nearest
Culebra Municipio, 65 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3584 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 43 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 5.8 350,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 250,000× the energy of this one
  3. Around the size people start to feel M 3.0 22× the energy of this one
  4. This earthquake M 2.1 about 43 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 18.8388, -65.0020. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Culebra Municipio, PR 65 km (41 mi) NNE of here earthquakes near Culebra Municipio
Fajardo Municipio, PR 80 km (50 mi) NE of here earthquakes near Fajardo Municipio
Luquillo Municipio, PR 91 km (57 mi) NE of here earthquakes near Luquillo Municipio
Vieques Municipio, PR 91 km (57 mi) NNE of here earthquakes near Vieques Municipio
Ceiba Municipio, PR 92 km (57 mi) NE of here earthquakes near Ceiba Municipio
Río Grande Municipio, PR 98 km (61 mi) ENE of here earthquakes near Río Grande 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 72 km N of Charlotte Amalie, U.S. Virgin Islands
  2. 3.1 53 km NNW of Charlotte Amalie, U.S. Virgin Islands
  3. 3.2 59 km NNE of Culebra, Puerto Rico
  4. 3.2 74 km N of Charlotte Amalie, U.S. Virgin Islands
  5. 2.0 16 km NNE of Charlotte Amalie, U.S. Virgin Islands
  6. 2.7 67 km NNW of Charlotte Amalie, U.S. Virgin Islands
  7. 3.2 71 km N of Culebra, Puerto Rico
  8. 3.2 40 km NNW of Charlotte Amalie, U.S. Virgin Islands
  9. 2.8 49 km N of Culebra, Puerto Rico
  10. 3.1 64 km NNE of Cruz Bay, U.S. Virgin Islands
  11. 2.9 67 km N of Culebra, Puerto Rico
  12. 3.0 66 km N of Cruz Bay, U.S. Virgin Islands
  13. 3.3 86 km N of Cruz Bay, U.S. Virgin Islands
  14. 3.1 89 km N of Culebra, Puerto Rico
  15. 3.4 103 km N 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 2,000 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.