QuakeIndex

Earthquake · reviewed by a seismologist

M 2.9md

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

· 40 km deep · released about 590 lb of TNT

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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 2.9 (md)
Depth
40 km below the surface
Felt
no reports yet
Nearest
Fajardo Municipio, 133 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2614 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 590 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 26,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 18,000× the energy of this one
  3. Around the size people start to feel M 3.0 1.6× the energy of this one
  4. This earthquake M 2.9 about 590 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 19.4585, -65.0376. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Fajardo Municipio, PR 133 km (82 mi) NNE of here earthquakes near Fajardo Municipio
Loíza Municipio, PR 147 km (92 mi) NE of here earthquakes near Loíza Municipio
Carolina Municipio, PR 153 km (95 mi) NE of here earthquakes near Carolina Municipio
San Juan Municipio, PR 158 km (98 mi) NE of here earthquakes near San Juan Municipio
Cataño Municipio, PR 162 km (101 mi) NE of here earthquakes near Cataño Municipio

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

Aftershocks so far

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

  1. 2.7 96 km NNE of Luquillo, Puerto Rico
  2. 3.0 Puerto Rico region
  3. 2.8 123 km NNW of Charlotte Amalie, U.S. Virgin Islands
  4. 3.3 142 km NNE of Vieques, Puerto Rico
  5. 3.2 142 km NNE of Vieques, Puerto Rico
  6. 2.5 117 km NNE of Vieques, Puerto Rico
  7. 3.0 133 km NNE of Vieques, Puerto Rico
  8. 3.1 147 km NNE of Vieques, Puerto Rico
  9. 2.4 137 km NNE of Vieques, Puerto Rico
  10. 3.2 129 km N of Culebra, Puerto Rico
  11. 3.4 150 km NNE of Vieques, Puerto Rico
  12. 3.6 144 km NNE of Vieques, Puerto Rico
  13. 2.3 84 km NNW of Charlotte Amalie, U.S. Virgin Islands
  14. 2.9 134 km NNW of Charlotte Amalie, U.S. Virgin Islands
  15. 2.7 114 km N of Cruz Bay, 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 1,100 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.