QuakeIndex

Earthquake · reviewed by a seismologist

M 2.9md

131 km NNE of Vieques, Puerto Rico

· 40 km deep · released about 610 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
Loíza Municipio, 135 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2719 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 610 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 25,000× 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 610 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 19.4935, -65.2936. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Loíza Municipio, PR 135 km (84 mi) NNE of here earthquakes near Loíza Municipio
San Juan Municipio, PR 144 km (90 mi) NE of here earthquakes near San Juan Municipio
Cataño Municipio, PR 147 km (92 mi) NE of here earthquakes near Cataño Municipio
Toa Baja Municipio, PR 149 km (93 mi) NE of here earthquakes near Toa Baja Municipio
Dorado Municipio, PR 152 km (95 mi) NE of here earthquakes near Dorado Municipio
Vega Alta Municipio, PR 161 km (100 mi) NE of here earthquakes near Vega Alta Municipio

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

Aftershocks so far

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

  1. 2.9 124 km N of Charlotte Amalie, U.S. Virgin Islands
  2. 2.7 96 km N of Charlotte Amalie, U.S. Virgin Islands
  3. 3.3 121 km NNE of Suárez, Puerto Rico
  4. 3.5 109 km NNE of Vieques, Puerto Rico
  5. 2.7 118 km N of Suárez, Puerto Rico
  6. 3.0 133 km NNW of Charlotte Amalie, U.S. Virgin Islands
  7. 3.1 134 km N of Charlotte Amalie, U.S. Virgin Islands
  8. 2.8 94 km NNW of Charlotte Amalie, U.S. Virgin Islands
  9. 2.7 88 km N of Culebra, Puerto Rico
  10. 3.7 124 km NNW of Charlotte Amalie, U.S. Virgin Islands
  11. 3.8 136 km N of Charlotte Amalie, U.S. Virgin Islands
  12. 3.0 118 km N of Charlotte Amalie, U.S. Virgin Islands
  13. 3.2 147 km N of Charlotte Amalie, U.S. Virgin Islands
  14. 3.4 132 km N of Charlotte Amalie, U.S. Virgin Islands
  15. 3.4 141 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 4.9 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.