QuakeIndex

Earthquake · reviewed by a seismologist

M 2.8md

26 km NNW of Tierras Nuevas Poniente, Puerto Rico

· 90 km deep · released about 490 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Barceloneta Municipio 25 kmManatí Municipio 28 kmVega Baja Municipio 31 kmArecibo Municipio 32 kmFlorida Municipio 36 kmVega Alta Municipio 36 kmHatillo Municipio 39 kmDorado Municipio 39 kmCamuy 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 2.8 (md)
Depth
90 km below the surface
Felt
no reports yet
Nearest
Barceloneta Municipio, 25 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2845 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 490 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 31,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 22,000× the energy of this one
  3. Around the size people start to feel M 3.0 1.9× the energy of this one
  4. This earthquake M 2.8 about 490 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 18.6956, -66.5486. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Barceloneta Municipio, PR 25 km (16 mi) N of here earthquakes near Barceloneta Municipio
Manatí Municipio, PR 28 km (18 mi) NNW of here earthquakes near Manatí Municipio
Vega Baja Municipio, PR 31 km (19 mi) NNW of here earthquakes near Vega Baja Municipio
Arecibo Municipio, PR 32 km (20 mi) NNE of here earthquakes near Arecibo Municipio
Florida Municipio, PR 36 km (23 mi) N of here earthquakes near Florida Municipio
Vega Alta Municipio, PR 36 km (23 mi) NW of here earthquakes near Vega 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. 2.1 0 km SW of Toa Alta, Puerto Rico
  2. 1.8 3 km W of Rafael Capo, Puerto Rico
  3. 2.2 4 km ENE of Isabela, Puerto Rico
  4. 2.9 13 km NNW of Brenas, Puerto Rico
  5. 1.8 1 km SE of Piedra Gorda, Puerto Rico
  6. 2.6 62 km NNE of Arecibo, Puerto Rico
  7. 2.9 49 km N of Hatillo, Puerto Rico
  8. 2.1 37 km N of San Juan, Puerto Rico
  9. 2.4 13 km N of Carrizales, Puerto Rico
  10. 1.5 18 km NNE of Tierras Nuevas Poniente, Puerto Rico
  11. 2.5 12 km N of Brenas, Puerto Rico
  12. 2.6 32 km N of Garrochales, Puerto Rico
  13. 2.4 34 km N of Arecibo, Puerto Rico
  14. 2.5 18 km NNW of Camuy, Puerto Rico
  15. 1.6 19 km N of Tierras Nuevas Poniente, 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 970 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.