QuakeIndex

Earthquake · reviewed by a seismologist

M 2.6md

31 km NNE of Brenas, Puerto Rico

· 56 km deep · released about 250 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Dorado Municipio 30 kmToa Baja Municipio 33 kmVega Baja Municipio 34 kmVega Alta Municipio 35 kmCataño Municipio 36 kmManatí Municipio 40 kmSan Juan Municipio 42 kmToa Alta Municipio 42 kmBarceloneta 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 2.6 (md)
Depth
56 km below the surface
Felt
no reports yet
Nearest
Dorado Municipio, 30 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2757 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 250 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 61,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 43,000× the energy of this one
  3. Around the size people start to feel M 3.0 3.8× the energy of this one
  4. This earthquake M 2.6 about 250 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 18.7425, -66.2753. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Dorado Municipio, PR 30 km (19 mi) N of here earthquakes near Dorado Municipio
Toa Baja Municipio, PR 33 km (20 mi) NNW of here earthquakes near Toa Baja Municipio
Vega Baja Municipio, PR 34 km (21 mi) NNE of here earthquakes near Vega Baja Municipio
Vega Alta Municipio, PR 35 km (22 mi) N of here earthquakes near Vega Alta Municipio
Cataño Municipio, PR 36 km (22 mi) NNW of here earthquakes near Cataño Municipio
Manatí Municipio, PR 40 km (25 mi) NE of here earthquakes near Manatí Municipio

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

Aftershocks so far

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

  1. 2.5 2 km ENE of Pájaros, Puerto Rico
  2. 2.8 0 km NNW of Tierras Nuevas Poniente, Puerto Rico
  3. 2.4 31 km N of Tierras Nuevas Poniente, Puerto Rico
  4. 3.0 59 km N of Arecibo, Puerto Rico
  5. 2.6 13 km N of Animas, Puerto Rico
  6. 1.9 2 km S of Barahona, Puerto Rico
  7. 2.6 23 km NNE of Carrizales, Puerto Rico
  8. 2.5 45 km N of Brenas, Puerto Rico
  9. 2.1 5 km NNE of Dorado, Puerto Rico
  10. 1.9 13 km N of Levittown, Puerto Rico
  11. 2.5 1 km ESE of Toa Baja, Puerto Rico
  12. 2.2 Puerto Rico region
  13. 2.2 11 km NNE of Arecibo, Puerto Rico
  14. 2.9 27 km NE of San Juan, Puerto Rico
  15. 2.4 69 km N of San Juan, 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 1,900 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.