QuakeIndex

Earthquake · reviewed by a seismologist

M 2.8md

82 km NNE of Luquillo, Puerto Rico

· 30 km deep · released about 480 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Fajardo Municipio 76 kmCulebra Municipio 81 kmLuquillo Municipio 83 kmRío Grande Municipio 86 kmLoíza Municipio 88 kmCeiba Municipio 92 kmCarolina Municipio 94 kmCanóvanas Municipio 95 kmSan Juan Municipio 99 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
30 km below the surface
Felt
no reports yet
Nearest
Fajardo Municipio, 76 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2952 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 480 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 32,000× 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 2× the energy of this one
  4. This earthquake M 2.8 about 480 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 19.0493, -65.3958. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Fajardo Municipio, PR 76 km (48 mi) NNE of here earthquakes near Fajardo Municipio
Culebra Municipio, PR 81 km (50 mi) N of here earthquakes near Culebra Municipio
Luquillo Municipio, PR 83 km (51 mi) NNE of here earthquakes near Luquillo Municipio
Río Grande Municipio, PR 86 km (53 mi) NNE of here earthquakes near Río Grande Municipio
Loíza Municipio, PR 88 km (55 mi) NE of here earthquakes near Loíza Municipio
Ceiba Municipio, PR 92 km (57 mi) NNE of here earthquakes near Ceiba Municipio

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

Aftershocks so far

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

  1. 2.8 73 km N of Culebra, Puerto Rico
  2. 2.8 71 km N of Charlotte Amalie, U.S. Virgin Islands
  3. 2.3 57 km N of Culebra, Puerto Rico
  4. 3.4 125 km NNW of Charlotte Amalie, U.S. Virgin Islands
  5. 2.6 Puerto Rico region
  6. 3.3 61 km N of Culebra, Puerto Rico
  7. 3.0 88 km NNE of Vieques, Puerto Rico
  8. 2.3 81 km N of Culebra, Puerto Rico
  9. 2.6 88 km NNE of Vieques, Puerto Rico
  10. 3.4 84 km N of Culebra, Puerto Rico
  11. 3.1 121 km NNE of Vieques, Puerto Rico
  12. 2.8 118 km N of Culebra, Puerto Rico
  13. 3.0 84 km NNE of Vieques, Puerto Rico
  14. 3.5 65 km N of Charlotte Amalie, U.S. Virgin Islands
  15. 3.1 74 km NNW of Charlotte Amalie, U.S. Virgin Islands

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 4.5 on 2018-03-06 — it released about 350 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.