QuakeIndex

Earthquake · reviewed by a seismologist

M 2.8md

8 km NE of Vieques, Puerto Rico

· 89 km deep · released about 550 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Río Grande Municipio 13 kmLuquillo Municipio 16 kmLoíza Municipio 17 kmCanóvanas Municipio 21 kmCarolina Municipio 22 kmFajardo Municipio 24 kmTrujillo Alto Municipio 29 kmSan Juan Municipio 31 kmNaguabo Municipio 31 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
89 km below the surface
Felt
no reports yet
Nearest
Río Grande Municipio, 13 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 206 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 18.4898, -65.7847. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Río Grande Municipio, PR 13 km (8 mi) N of here earthquakes near Río Grande Municipio
Luquillo Municipio, PR 16 km (10 mi) NNW of here earthquakes near Luquillo Municipio
Loíza Municipio, PR 17 km (11 mi) ENE of here earthquakes near Loíza Municipio
Canóvanas Municipio, PR 21 km (13 mi) NNE of here earthquakes near Canóvanas Municipio
Carolina Municipio, PR 22 km (14 mi) ENE of here earthquakes near Carolina Municipio
Fajardo Municipio, PR 24 km (15 mi) WNW of here earthquakes near Fajardo Municipio

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

Aftershocks so far

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

  1. 2.1 10 km E of El Negro, Puerto Rico
  2. 3.2 11 km SSE of Punta Santiago, Puerto Rico
  3. 2.1 5 km SSE of Bajandas, Puerto Rico
  4. 2.7 5 km SW of Guaynabo, Puerto Rico
  5. 3.2 31 km NNE of Vieques, Puerto Rico
  6. 2.9 29 km N of San Juan, Puerto Rico
  7. 2.5 14 km N of Isabel Segunda, Puerto Rico
  8. 3.2 44 km NNE of Vieques, Puerto Rico
  9. 3.3 50 km N of Loíza, Puerto Rico
  10. 2.8 52 km NNE of Vieques, Puerto Rico
  11. 2.8 15 km NNE of Dorado, Puerto Rico
  12. 2.7 2 km WSW of Bayamón, Puerto Rico
  13. 2.4 7 km WNW of Esperanza, Puerto Rico
  14. 2.1 7 km SSW of Jagual, Puerto Rico
  15. 3.1 4 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.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.