QuakeIndex

Earthquake · reviewed by a seismologist

M 3.0md

120 km NNE of Vieques, Puerto Rico

· 100 km deep · released about 830 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Fajardo Municipio 118 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
100 km below the surface
Felt
no reports yet
Nearest
Fajardo Municipio, 118 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2451 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 19.4325, -65.4081. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Fajardo Municipio, PR 118 km (73 mi) N of here earthquakes near Fajardo Municipio
Luquillo Municipio, PR 123 km (76 mi) NNE of here earthquakes near Luquillo Municipio
Loíza Municipio, PR 123 km (77 mi) NNE of here earthquakes near Loíza Municipio
Río Grande Municipio, PR 124 km (77 mi) NNE of here earthquakes near Río Grande Municipio
Carolina Municipio, PR 129 km (80 mi) NNE of here earthquakes near Carolina Municipio
San Juan Municipio, PR 132 km (82 mi) NNE of here earthquakes near San Juan Municipio

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

Aftershocks so far

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

  1. 3.9 134 km NNE of Suárez, Puerto Rico
  2. 3.9 119 km N of Charlotte Amalie, U.S. Virgin Islands
  3. 3.7 104 km N of Suárez, Puerto Rico
  4. 3.1 108 km NNE of San Juan, Puerto Rico
  5. 3.3 74 km NNE of Vieques, Puerto Rico
  6. 4.4 89 km N of Culebra, Puerto Rico
  7. 3.2 136 km N of Suárez, Puerto Rico
  8. 3.1 123 km N of Culebra, Puerto Rico
  9. 2.9 Puerto Rico region
  10. 3.3 113 km N of Culebra, Puerto Rico
  11. 3.4 95 km N of Culebra, Puerto Rico
  12. 3.2 92 km NNE of Suárez, Puerto Rico
  13. 2.4 127 km NNE of Suárez, Puerto Rico
  14. 3.1 106 km NNW of Charlotte Amalie, U.S. Virgin Islands
  15. 3.3 82 km NNW 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 4.9 on 2018-11-14 — it released about 810 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.