QuakeIndex

Earthquake · reviewed by a seismologist

M 2.6md

6 km NNW of Bairoa, Puerto Rico

· 25 km deep · released about 240 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Trujillo Alto Municipio 6 kmGuaynabo Municipio 7 kmGurabo Municipio 9 kmAguas Buenas Municipio 10 kmCaguas Municipio 11 kmSan Juan Municipio 12 kmBayamón Municipio 13 kmCarolina Municipio 13 kmCataño Municipio 18 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
25 km below the surface
Felt
no reports yet
Nearest
Trujillo Alto Municipio, 6 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3245 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 240 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 63,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 45,000× the energy of this one
  3. Around the size people start to feel M 3.0 4× the energy of this one
  4. This earthquake M 2.6 about 240 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 18.3121, -66.0560. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Trujillo Alto Municipio, PR 6 km (4 mi) WSW of here earthquakes near Trujillo Alto Municipio
Guaynabo Municipio, PR 7 km (4 mi) ESE of here earthquakes near Guaynabo Municipio
Gurabo Municipio, PR 9 km (6 mi) WNW of here earthquakes near Gurabo Municipio
Aguas Buenas Municipio, PR 10 km (6 mi) NE of here earthquakes near Aguas Buenas Municipio
Caguas Municipio, PR 11 km (7 mi) N of here earthquakes near Caguas Municipio
San Juan Municipio, PR 12 km (8 mi) S of here earthquakes near San Juan Municipio

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

Aftershocks so far

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

  1. 2.7 1 km NE of Jauca, Puerto Rico
  2. 1.9 7 km WSW of Orocovis, Puerto Rico
  3. 2.7 2 km SW of Toa Baja, Puerto Rico
  4. 3.0 4 km W of Ciales, Puerto Rico
  5. 2.7 1 km S of G. L. Garcia, Puerto Rico
  6. 2.8 4 km NNE of Guaynabo, Puerto Rico
  7. 2.9 4 km SW of Gurabo, Puerto Rico
  8. 2.9 2 km WNW of Vega Baja, Puerto Rico
  9. 1.5 3 km SSW of Arroyo, Puerto Rico
  10. 2.4 5 km N of Yaurel, Puerto Rico
  11. 2.6 Puerto Rico region
  12. 3.0 4 km SE of G. L. Garcia, Puerto Rico
  13. 3.1 18 km NNW of Brenas, Puerto Rico
  14. 3.1 4 km SSE of Palo Seco, Puerto Rico
  15. 2.0 3 km SSE of Carolina, 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 4.6 on 2016-12-05 — it released about 1,000 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.