QuakeIndex

Earthquake · reviewed by a seismologist

M 2.9md

2 km NE of Trujillo Alto, Puerto Rico

· 128 km deep · released about 570 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Carolina Municipio 4 kmTrujillo Alto Municipio 4 kmLoíza Municipio 10 kmSan Juan Municipio 10 kmGurabo Municipio 11 kmCanóvanas Municipio 12 kmGuaynabo Municipio 13 kmJuncos Municipio 18 kmCataño Municipio 19 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
128 km below the surface
Felt
no reports yet
Nearest
Carolina Municipio, 4 km NE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2694 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 570 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 27,000× 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 2.9 about 570 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 18.3711, -65.9905. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Carolina Municipio, PR 4 km (2 mi) SW of here earthquakes near Carolina Municipio
Trujillo Alto Municipio, PR 4 km (3 mi) NNE of here earthquakes near Trujillo Alto Municipio
Loíza Municipio, PR 10 km (6 mi) SSW of here earthquakes near Loíza Municipio
San Juan Municipio, PR 10 km (6 mi) SE of here earthquakes near San Juan Municipio
Gurabo Municipio, PR 11 km (7 mi) N of here earthquakes near Gurabo Municipio
Canóvanas Municipio, PR 12 km (7 mi) WNW of here earthquakes near Canóvanas Municipio

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

Aftershocks so far

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

  1. 1.9 37 km N of San Juan, Puerto Rico
  2. 1.5 1 km WSW of Vázquez, Puerto Rico
  3. 1.5 1 km ENE of Jobos, Puerto Rico
  4. 1.5 5 km SSW of Emajagua, Puerto Rico
  5. 2.7 3 km E of Ceiba, Puerto Rico
  6. 2.1 9 km NNW of Levittown, Puerto Rico
  7. 2.5 36 km NNE of Suárez, Puerto Rico
  8. 1.9 20 km NNE of Luquillo, Puerto Rico
  9. 2.1 19 km N of Brenas, Puerto Rico
  10. 1.5 1 km NNE of Jobos, Puerto Rico
  11. 2.1 2 km ENE of Celada, Puerto Rico
  12. 1.8 11 km NNW of San Juan, Puerto Rico
  13. 1.9 5 km SE of La Plena, Puerto Rico
  14. 1.7 5 km E of San Juan, Puerto Rico
  15. 2.3 6 km NW of Trujillo Alto, 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 4.1 on 2019-05-02 — it released about 75 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.