QuakeIndex

Earthquake · reviewed by a seismologist

M 2.8md

5 km NNW of Dorado, Puerto Rico

· 115 km deep · released about 550 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Dorado Municipio 5 kmVega Alta Municipio 9 kmToa Baja Municipio 12 kmVega Baja Municipio 12 kmToa Alta Municipio 16 kmCataño Municipio 17 kmBayamón Municipio 22 kmManatí Municipio 22 kmCorozal Municipio 22 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 2.8 (md)
Depth
115 km below the surface
Felt
no reports yet
Nearest
Dorado Municipio, 5 km SE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1471 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 550 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 28,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 19,000× the energy of this one
  3. Around the size people start to feel M 3.0 1.7× the energy of this one
  4. This earthquake M 2.8 about 550 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 18.5037, -66.2942. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Dorado Municipio, PR 5 km (3 mi) NW of here earthquakes near Dorado Municipio
Vega Alta Municipio, PR 9 km (5 mi) NNE of here earthquakes near Vega Alta Municipio
Toa Baja Municipio, PR 12 km (7 mi) WNW of here earthquakes near Toa Baja Municipio
Vega Baja Municipio, PR 12 km (8 mi) ENE of here earthquakes near Vega Baja Municipio
Toa Alta Municipio, PR 16 km (10 mi) NNW of here earthquakes near Toa Alta Municipio
Cataño Municipio, PR 17 km (10 mi) WNW of here earthquakes near Cataño Municipio

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

Aftershocks so far

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

  1. 2.9 4 km N of Animas, Puerto Rico
  2. 2.9 3 km E of San Juan, Puerto Rico
  3. 2.8 20 km N of Arecibo, Puerto Rico
  4. 3.1 12 km N of Brenas, Puerto Rico
  5. 3.1 10 km NW of San Juan, Puerto Rico
  6. 3.3 3 km SE of Trujillo Alto, Puerto Rico
  7. 2.7 Puerto Rico region
  8. 3.2 24 km N of San Juan, Puerto Rico
  9. 3.3 19 km NNE of Carrizales, Puerto Rico
  10. 3.7 Puerto Rico region
  11. 3.2 5 km ESE of Pájaros, Puerto Rico
  12. 3.1 4 km SSW of Florida, Puerto Rico
  13. 3.2 31 km NNE of Dorado, Puerto Rico
  14. 2.9 Puerto Rico region
  15. 2.1 3 km E of Comerío, 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 870 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.