QuakeIndex

Earthquake · reviewed by a seismologist

M 2.9Md

105 km NNE of Vieques, Puerto Rico

· 36 km deep · released about 680 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Fajardo Municipio 100 kmCulebra Municipio 104 kmLuquillo Municipio 106 kmRío Grande Municipio 109 kmLoíza Municipio 110 kmCeiba Municipio 116 kmCarolina Municipio 116 kmCanóvanas Municipio 118 kmSan Juan Municipio 120 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 2.9 (Md)
Depth
36 km below the surface
Felt
no reports yet
Nearest
Fajardo Municipio, 100 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3495 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 680 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 22,000× 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 1.4× the energy of this one
  4. This earthquake M 2.9 about 680 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 19.2609, -65.3533. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Fajardo Municipio, PR 100 km (62 mi) NNE of here earthquakes near Fajardo Municipio
Culebra Municipio, PR 104 km (65 mi) N of here earthquakes near Culebra Municipio
Luquillo Municipio, PR 106 km (66 mi) NNE of here earthquakes near Luquillo Municipio
Río Grande Municipio, PR 109 km (68 mi) NNE of here earthquakes near Río Grande Municipio
Loíza Municipio, PR 110 km (68 mi) NE of here earthquakes near Loíza Municipio
Ceiba Municipio, PR 116 km (72 mi) NNE of here earthquakes near Ceiba Municipio

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

Aftershocks so far

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

  1. 2.9 107 km N of Charlotte Amalie, U.S. Virgin Islands
  2. 3.3 105 km N of Charlotte Amalie, U.S. Virgin Islands
  3. 3.2 96 km NNW of Charlotte Amalie, U.S. Virgin Islands
  4. 3.1 104 km N of Charlotte Amalie, U.S. Virgin Islands
  5. 3.4 122 km N of Charlotte Amalie, U.S. Virgin Islands
  6. 3.3 123 km N of Charlotte Amalie, U.S. Virgin Islands
  7. 2.8 117 km N of Charlotte Amalie, U.S. Virgin Islands
  8. 3.1 98 km NNE of Vieques, Puerto Rico
  9. 2.5 75 km NNE of Vieques, Puerto Rico
  10. 3.4 138 km NNW of Charlotte Amalie, U.S. Virgin Islands
  11. 3.4 102 km N of Culebra, Puerto Rico
  12. 3.4 122 km N of Charlotte Amalie, U.S. Virgin Islands
  13. 3.2 125 km N of Charlotte Amalie, U.S. Virgin Islands
  14. 3.3 72 km N of Charlotte Amalie, U.S. Virgin Islands
  15. 3.2 74 km N 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 4.3 on 2016-09-04 — it released about 130 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.