QuakeIndex

Earthquake · reviewed by a seismologist

M 3.2md

54 km WSW of Saint Croix, U.S. Virgin Islands

· 12 km deep · released about 1,800 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Vieques Municipio 64 kmCulebra Municipio 83 kmMaunabo Municipio 83 kmYabucoa Municipio 84 kmHumacao Municipio 84 kmCeiba Municipio 85 kmNaguabo Municipio 87 kmPatillas Municipio 91 kmLas Piedras Municipio 95 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 3.2 (md)
Depth
12 km below the surface
Felt
no reports yet
Nearest
Vieques Municipio, 64 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 176 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 1,800 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.2 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 180,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 8,200× the energy of this one
  3. Magna, Utah 2020 M 5.7 5,800× the energy of this one
  4. This earthquake M 3.2 about 1,800 lb of TNT
  5. Around the size people start to feel M 3.0 this one released 1.9× more

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 17.5832, -65.2422. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Vieques Municipio, PR 64 km (40 mi) SSE of here earthquakes near Vieques Municipio
Culebra Municipio, PR 83 km (52 mi) S of here earthquakes near Culebra Municipio
Maunabo Municipio, PR 83 km (52 mi) ESE of here earthquakes near Maunabo Municipio
Yabucoa Municipio, PR 84 km (52 mi) SE of here earthquakes near Yabucoa Municipio
Humacao Municipio, PR 84 km (52 mi) SE of here earthquakes near Humacao Municipio
Ceiba Municipio, PR 85 km (53 mi) SSE of here earthquakes near Ceiba Municipio

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

Aftershocks so far

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

  1. 3.2 40 km SE of Esperanza, Puerto Rico
  2. 3.1 16 km SE of Esperanza, Puerto Rico
  3. 3.1 14 km SSE of Esperanza, Puerto Rico
  4. 2.9 17 km S of Esperanza, Puerto Rico
  5. 2.9 16 km SSE of Esperanza, Puerto Rico
  6. 2.6 14 km SE of Esperanza, Puerto Rico
  7. 2.5 19 km S of Esperanza, Puerto Rico
  8. 3.2 35 km SE of Esperanza, Puerto Rico
  9. 3.1 17 km SSE of Esperanza, Puerto Rico
  10. 3.7 29 km SSW of Esperanza, 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 4.8 on 2021-10-08 — it released about 260 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.