QuakeIndex

Earthquake · reviewed by a seismologist

M 3.2md

100 km NNE of Vieques, Puerto Rico

· 76 km deep · released about 2,000 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Fajardo Municipio 97 kmLuquillo Municipio 102 kmCulebra Municipio 103 kmRío Grande Municipio 105 kmLoíza Municipio 105 kmCarolina Municipio 111 kmCeiba Municipio 112 kmCanóvanas Municipio 113 kmSan Juan Municipio 115 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
76 km below the surface
Felt
no reports yet
Nearest
Fajardo Municipio, 97 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 826 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 2,000 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 6.7 170,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 7,700× the energy of this one
  3. Magna, Utah 2020 M 5.7 5,400× the energy of this one
  4. This earthquake M 3.2 about 2,000 lb of TNT
  5. Around the size people start to feel M 3.0 this one released 2.1× 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 19.2462, -65.4160. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Fajardo Municipio, PR 97 km (60 mi) N of here earthquakes near Fajardo Municipio
Luquillo Municipio, PR 102 km (64 mi) NNE of here earthquakes near Luquillo Municipio
Culebra Municipio, PR 103 km (64 mi) N of here earthquakes near Culebra Municipio
Río Grande Municipio, PR 105 km (65 mi) NNE of here earthquakes near Río Grande Municipio
Loíza Municipio, PR 105 km (65 mi) NNE of here earthquakes near Loíza Municipio
Carolina Municipio, PR 111 km (69 mi) NNE of here earthquakes near Carolina Municipio

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

Aftershocks so far

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

  1. 3.4 145 km NNE of Vieques, Puerto Rico
  2. 3.6 133 km N of Culebra, Puerto Rico
  3. 3.7 128 km N of Culebra, Puerto Rico
  4. 3.8 138 km NNE of Vieques, Puerto Rico
  5. 3.6 144 km NNE of Vieques, Puerto Rico
  6. 3.6 142 km NNE of Vieques, Puerto Rico
  7. 3.8 130 km NNE of Vieques, Puerto Rico
  8. 3.9 141 km NNE of Vieques, Puerto Rico
  9. 3.7 144 km NNW of Charlotte Amalie, U.S. Virgin Islands
  10. 4.0 138 km NNE of Vieques, Puerto Rico
  11. 3.6 139 km NNW of Charlotte Amalie, U.S. Virgin Islands
  12. 3.7 139 km NNE of Vieques, Puerto Rico
  13. 3.4 147 km NNW of Charlotte Amalie, U.S. Virgin Islands
  14. 3.1 68 km NNE of Vieques, Puerto Rico
  15. 3.4 148 km NNE of Vieques, 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 2021-03-09 — it released about 240 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.