QuakeIndex

Earthquake · reviewed by a seismologist

M 2.8md

29 km N of Garrochales, Puerto Rico

· 60 km deep · released about 550 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Barceloneta Municipio 28 kmManatí Municipio 31 kmArecibo Municipio 34 kmVega Baja Municipio 34 kmFlorida Municipio 39 kmHatillo Municipio 40 kmVega Alta Municipio 40 kmDorado Municipio 42 kmCamuy Municipio 44 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
60 km below the surface
Felt
no reports yet
Nearest
Barceloneta Municipio, 28 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3396 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 18.7195, -66.5646. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Barceloneta Municipio, PR 28 km (17 mi) N of here earthquakes near Barceloneta Municipio
Manatí Municipio, PR 31 km (20 mi) NNW of here earthquakes near Manatí Municipio
Arecibo Municipio, PR 34 km (21 mi) NNE of here earthquakes near Arecibo Municipio
Vega Baja Municipio, PR 34 km (21 mi) NNW of here earthquakes near Vega Baja Municipio
Florida Municipio, PR 39 km (24 mi) N of here earthquakes near Florida Municipio
Hatillo Municipio, PR 40 km (25 mi) NE of here earthquakes near Hatillo Municipio

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

Aftershocks so far

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

  1. 2.9 64 km N of Hatillo, Puerto Rico
  2. 3.4 29 km N of Dorado, Puerto Rico
  3. 3.0 12 km NNE of Isabela, Puerto Rico
  4. 2.8 17 km N of Carrizales, Puerto Rico
  5. 3.1 66 km N of Hatillo, Puerto Rico
  6. 3.4 68 km N of Hatillo, Puerto Rico
  7. 3.0 66 km N of Hatillo, Puerto Rico
  8. 2.8 45 km N of Hatillo, Puerto Rico
  9. 3.6 67 km N of Hatillo, Puerto Rico
  10. 2.9 66 km N of Hatillo, Puerto Rico
  11. 2.7 15 km NNE of Hatillo, Puerto Rico
  12. 2.3 1 km S of Río Lajas, Puerto Rico
  13. 2.6 21 km NNE of Dorado, Puerto Rico
  14. 3.0 10 km NNW of Camuy, Puerto Rico
  15. 2.7 20 km N of Brenas, 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 4.0 on 2017-03-24 — it released about 55 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.