QuakeIndex

Earthquake · reviewed by a seismologist

M 2.9md

134 km NNW of Charlotte Amalie, U.S. Virgin Islands

· 30 km deep · released about 650 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
30 km below the surface
Felt
no reports yet
Nearest
Loíza Municipio, 140 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2588 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 650 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 23,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 16,000× the energy of this one
  3. Around the size people start to feel M 3.0 1.5× the energy of this one
  4. This earthquake M 2.9 about 650 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 19.5205, -65.2446. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Loíza Municipio, PR 140 km (87 mi) NNE of here earthquakes near Loíza Municipio
Cataño Municipio, PR 153 km (95 mi) NE of here earthquakes near Cataño Municipio
Toa Baja Municipio, PR 155 km (96 mi) NE of here earthquakes near Toa Baja Municipio
Dorado Municipio, PR 158 km (98 mi) NE of here earthquakes near Dorado Municipio

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

Aftershocks so far

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

  1. 2.9 96 km N of Charlotte Amalie, U.S. Virgin Islands
  2. 2.7 89 km N of Culebra, Puerto Rico
  3. 3.1 138 km N of Charlotte Amalie, U.S. Virgin Islands
  4. 3.1 133 km NNE of Vieques, Puerto Rico
  5. 2.7 91 km N of Charlotte Amalie, U.S. Virgin Islands
  6. 3.2 137 km NNE of Vieques, Puerto Rico
  7. 2.5 138 km NNE of Suárez, Puerto Rico
  8. 2.8 126 km NNW of Charlotte Amalie, U.S. Virgin Islands
  9. 2.9 100 km N of Charlotte Amalie, U.S. Virgin Islands
  10. 3.3 126 km NNE of Vieques, Puerto Rico
  11. 3.2 104 km NNE of Suárez, Puerto Rico
  12. 3.1 113 km N of Suárez, Puerto Rico
  13. 3.0 148 km NNE of Vieques, Puerto Rico
  14. 3.2 135 km NNE of Vieques, Puerto Rico
  15. 2.3 88 km N of Culebra, 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 4.9 on 2018-11-14 — it released about 1,000 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.