QuakeIndex

Earthquake · reviewed by a seismologist

M 2.9md

127 km NNE of Vieques, Puerto Rico

· 69 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
69 km below the surface
Felt
no reports yet
Nearest
Fajardo Municipio, 122 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2570 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 19.4521, -65.2938. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Fajardo Municipio, PR 122 km (76 mi) NNE of here earthquakes near Fajardo Municipio
Río Grande Municipio, PR 131 km (81 mi) NNE of here earthquakes near Río Grande Municipio
Loíza Municipio, PR 131 km (81 mi) NNE of here earthquakes near Loíza Municipio
Carolina Municipio, PR 137 km (85 mi) NNE of here earthquakes near Carolina Municipio
San Juan Municipio, PR 141 km (87 mi) NE of here earthquakes near San Juan Municipio
Cataño Municipio, PR 144 km (89 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

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

  1. 2.8 84 km NNE of Vieques, Puerto Rico
  2. 2.7 106 km N of Charlotte Amalie, U.S. Virgin Islands
  3. 2.3 79 km N of Culebra, Puerto Rico
  4. 3.0 119 km N of Charlotte Amalie, U.S. Virgin Islands
  5. 2.7 98 km N of Culebra, Puerto Rico
  6. 2.7 91 km NNW of Charlotte Amalie, U.S. Virgin Islands
  7. 2.6 83 km N of Culebra, Puerto Rico
  8. 2.3 77 km N of Culebra, Puerto Rico
  9. 2.8 78 km N of Culebra, Puerto Rico
  10. 3.1 95 km NNE of Luquillo, Puerto Rico
  11. 2.7 94 km NNW of Charlotte Amalie, U.S. Virgin Islands
  12. 2.6 104 km N of Suárez, Puerto Rico
  13. 2.9 86 km NNE of Vieques, Puerto Rico
  14. 2.8 80 km NNE of Vieques, Puerto Rico
  15. 2.4 81 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 1,000 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.