QuakeIndex

Earthquake · reviewed by a seismologist

M 2.8md

43 km N of Suárez, Puerto Rico

· 8.0 km deep · released about 460 lb of TNT

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10 km30 km60 km120 km N Loíza Municipio 43 kmCarolina Municipio 49 kmRío Grande Municipio 50 kmSan Juan Municipio 51 kmLuquillo Municipio 52 kmCataño Municipio 53 kmCanóvanas Municipio 55 kmToa Baja Municipio 55 kmFajardo Municipio 55 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
8.0 km below the surface
Felt
no reports yet
Nearest
Loíza Municipio, 43 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2644 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 460 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 33,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 23,000× the energy of this one
  3. Around the size people start to feel M 3.0 2.1× the energy of this one
  4. This earthquake M 2.8 about 460 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 18.8215, -65.8393. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Loíza Municipio, PR 43 km (27 mi) NNE of here earthquakes near Loíza Municipio
Carolina Municipio, PR 49 km (31 mi) NNE of here earthquakes near Carolina Municipio
Río Grande Municipio, PR 50 km (31 mi) N of here earthquakes near Río Grande Municipio
San Juan Municipio, PR 51 km (31 mi) NNE of here earthquakes near San Juan Municipio
Luquillo Municipio, PR 52 km (32 mi) NNW of here earthquakes near Luquillo Municipio
Cataño Municipio, PR 53 km (33 mi) NE of here earthquakes near Cataño Municipio

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

Aftershocks so far

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

  1. 2.6 59 km N of Suárez, Puerto Rico
  2. 2.9 86 km NNE of Vieques, Puerto Rico
  3. 2.8 80 km NNE of Vieques, Puerto Rico
  4. 2.4 81 km NNE of Vieques, Puerto Rico
  5. 2.2 43 km N of Suárez, Puerto Rico
  6. 1.8 25 km NNE of Luquillo, Puerto Rico
  7. 2.2 80 km NNE of Vieques, Puerto Rico
  8. 2.5 23 km NNE of Luquillo, Puerto Rico
  9. 1.9 35 km NNE of Luquillo, Puerto Rico
  10. 1.9 51 km NNE of Vieques, Puerto Rico
  11. 2.8 Puerto Rico region
  12. 2.0 61 km N of Loíza, Puerto Rico
  13. 2.3 46 km NNE of Luquillo, Puerto Rico
  14. 2.5 50 km NNE of Luquillo, Puerto Rico
  15. 2.7 66 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.