QuakeIndex

Earthquake · reviewed by a seismologist

M 2.9md

2 km NW of Sabana, Puerto Rico

· 93 km deep · released about 780 lb of TNT

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10 km30 km60 km120 km N Vega Baja Municipio 3 kmVega Alta Municipio 6 kmDorado Municipio 12 kmManatí Municipio 13 kmMorovis Municipio 18 kmToa Alta Municipio 18 kmToa Baja Municipio 19 kmBarceloneta Municipio 19 kmCorozal Municipio 20 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
93 km below the surface
Felt
1 report · strongest reported intensity II
Nearest
Vega Baja Municipio, 3 km SW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 113 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 1 person has reported feeling it to USGS.

How big was it?

This earthquake released about 780 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 19,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 14,000× the energy of this one
  3. Around the size people start to feel M 3.0 1.2× the energy of this one
  4. This earthquake M 2.9 about 780 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 18.4753, -66.3737. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Vega Baja Municipio, PR 3 km (2 mi) NE of here earthquakes near Vega Baja Municipio
Vega Alta Municipio, PR 6 km (4 mi) NW of here earthquakes near Vega Alta Municipio
Dorado Municipio, PR 12 km (7 mi) W of here earthquakes near Dorado Municipio
Manatí Municipio, PR 13 km (8 mi) ENE of here earthquakes near Manatí Municipio
Morovis Municipio, PR 18 km (11 mi) NNE of here earthquakes near Morovis Municipio
Toa Alta Municipio, PR 18 km (11 mi) NW of here earthquakes near Toa Alta Municipio

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

Aftershocks so far

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

  1. 2.6 5 km N of Animas, Puerto Rico
  2. 3.1 36 km NNE of Arecibo, Puerto Rico
  3. 2.3 5 km NNW of Coco, Puerto Rico
  4. 2.4 19 km NNE of Arecibo, Puerto Rico
  5. 2.3 4 km N of Brenas, Puerto Rico
  6. 2.9 7 km NNE of Brenas, Puerto Rico
  7. 2.7 5 km SW of Guaynabo, Puerto Rico
  8. 2.7 14 km N of Carrizales, Puerto Rico
  9. 2.1 3 km NE of La Plena, Puerto Rico
  10. 2.9 29 km N of San Juan, Puerto Rico
  11. 2.1 5 km NNW of Coto Laurel, Puerto Rico
  12. 2.1 2 km W of Garrochales, Puerto Rico
  13. 2.8 15 km NNE of Dorado, Puerto Rico
  14. 3.1 0 km WNW of Monserrate, Puerto Rico
  15. 2.7 41 km N of Brenas, 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 4.4 on 2018-12-09 — it released about 150 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.