QuakeIndex

Earthquake · reviewed by a seismologist

M 3.0md

8 km NNW of Dorado, Puerto Rico

· 75 km deep · released about 830 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Dorado Municipio 7 kmVega Alta Municipio 12 kmToa Baja Municipio 13 kmVega Baja Municipio 15 kmCataño Municipio 18 kmToa Alta Municipio 20 kmBayamón Municipio 24 kmManatí Municipio 24 kmSan Juan Municipio 26 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 3.0 (md)
Depth
75 km below the surface
Felt
1 report · strongest reported intensity II
Nearest
Dorado Municipio, 7 km SSE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1530 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 830 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.0 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 410,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 18,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 13,000× the energy of this one
  4. This earthquake M 3.0 about 830 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 18.5360, -66.2843. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Dorado Municipio, PR 7 km (5 mi) NNW of here earthquakes near Dorado Municipio
Vega Alta Municipio, PR 12 km (8 mi) NNE of here earthquakes near Vega Alta Municipio
Toa Baja Municipio, PR 13 km (8 mi) NW of here earthquakes near Toa Baja Municipio
Vega Baja Municipio, PR 15 km (9 mi) NE of here earthquakes near Vega Baja Municipio
Cataño Municipio, PR 18 km (11 mi) NW of here earthquakes near Cataño Municipio
Toa Alta Municipio, PR 20 km (12 mi) NNW 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

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

  1. 2.8 1 km S of Garrochales, Puerto Rico
  2. 3.3 3 km SSE of Pájaros, Puerto Rico
  3. 2.7 2 km WNW of Gurabo, Puerto Rico
  4. 3.3 34 km N of San Juan, Puerto Rico
  5. 3.1 6 km NNW of Brenas, Puerto Rico
  6. 3.3 5 km NW of Aguas Buenas, Puerto Rico
  7. 2.5 7 km ENE of Jayuya, Puerto Rico
  8. 3.0 17 km NNE of Arecibo, Puerto Rico
  9. 3.4 49 km N of Tierras Nuevas Poniente, Puerto Rico
  10. 3.0 11 km NNW of Brenas, Puerto Rico
  11. 2.8 36 km NNE of Arecibo, Puerto Rico
  12. 2.8 5 km NNW of Dorado, Puerto Rico
  13. 2.2 3 km N of Orocovis, Puerto Rico
  14. 3.6 1 km NNW of San José, Puerto Rico
  15. 3.0 3 km E of Cayey, 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 580 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.