QuakeIndex

Earthquake · reviewed by a seismologist

M 2.9md

27 km N of Tierras Nuevas Poniente, Puerto Rico

· 58 km deep · released about 650 lb of TNT

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10 km30 km60 km120 km N Barceloneta Municipio 28 kmManatí Municipio 30 kmVega Baja Municipio 31 kmVega Alta Municipio 35 kmArecibo Municipio 36 kmDorado Municipio 37 kmFlorida Municipio 39 kmToa Baja Municipio 43 kmHatillo Municipio 43 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
58 km below the surface
Felt
no reports yet
Nearest
Barceloneta Municipio, 28 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 961 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 18.7120, -66.5018. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Barceloneta Municipio, PR 28 km (17 mi) NNE of here earthquakes near Barceloneta Municipio
Manatí Municipio, PR 30 km (18 mi) N of here earthquakes near Manatí Municipio
Vega Baja Municipio, PR 31 km (19 mi) NNW of here earthquakes near Vega Baja Municipio
Vega Alta Municipio, PR 35 km (22 mi) NNW of here earthquakes near Vega Alta Municipio
Arecibo Municipio, PR 36 km (22 mi) NNE of here earthquakes near Arecibo Municipio
Dorado Municipio, PR 37 km (23 mi) NW of here earthquakes near Dorado Municipio

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

Aftershocks so far

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

  1. 3.4 62 km N of Carrizales, Puerto Rico
  2. 3.0 1 km NNE of Manatí, Puerto Rico
  3. 2.9 16 km N of Quebradillas, Puerto Rico
  4. 2.9 17 km N of Arecibo, Puerto Rico
  5. 3.2 68 km N of Carrizales, Puerto Rico
  6. 3.2 76 km N of Tierras Nuevas Poniente, Puerto Rico
  7. 3.0 75 km N of Tierras Nuevas Poniente, Puerto Rico
  8. 3.2 76 km N of Tierras Nuevas Poniente, Puerto Rico
  9. 3.0 2 km E of Vega Alta, Puerto Rico
  10. 3.1 74 km N of Brenas, Puerto Rico
  11. 3.1 71 km N of Carrizales, Puerto Rico
  12. 3.1 63 km N of Tierras Nuevas Poniente, Puerto Rico
  13. 3.1 18 km NNW of Brenas, Puerto Rico
  14. 3.0 12 km N of Hatillo, Puerto Rico
  15. 2.6 25 km NNE of Isabela, 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 4.8 on 2017-08-18 — it released about 730 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.