QuakeIndex

Earthquake · reviewed by a seismologist

M 2.8md

118 km N of Culebra, Puerto Rico

· 106 km deep · released about 460 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Fajardo Municipio 115 kmCulebra Municipio 116 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
106 km below the surface
Felt
no reports yet
Nearest
Fajardo Municipio, 115 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2892 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 19.3700, -65.2635. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Fajardo Municipio, PR 115 km (71 mi) NNE of here earthquakes near Fajardo Municipio
Culebra Municipio, PR 116 km (72 mi) N of here earthquakes near Culebra Municipio
Luquillo Municipio, PR 121 km (75 mi) NNE of here earthquakes near Luquillo Municipio
Río Grande Municipio, PR 124 km (77 mi) NNE of here earthquakes near Río Grande Municipio
Loíza Municipio, PR 125 km (78 mi) NE of here earthquakes near Loíza Municipio
Carolina Municipio, PR 131 km (82 mi) NE of here earthquakes near Carolina Municipio

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

Aftershocks so far

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

  1. 3.1 116 km NNE of Vieques, Puerto Rico
  2. 2.6 83 km N of Charlotte Amalie, U.S. Virgin Islands
  3. 3.1 108 km NNW of Charlotte Amalie, U.S. Virgin Islands
  4. 2.2 74 km NNW of Charlotte Amalie, U.S. Virgin Islands
  5. 3.4 128 km NNE of Vieques, Puerto Rico
  6. 2.5 110 km NNW of Charlotte Amalie, U.S. Virgin Islands
  7. 3.3 69 km N of Culebra, Puerto Rico
  8. 3.2 125 km N of Culebra, Puerto Rico
  9. 3.4 135 km NNE of Suárez, Puerto Rico
  10. 2.6 151 km N of Charlotte Amalie, U.S. Virgin Islands
  11. 2.9 127 km NNE of Vieques, Puerto Rico
  12. 3.1 Puerto Rico region
  13. 3.6 119 km NNW of Charlotte Amalie, U.S. Virgin Islands
  14. 2.6 81 km N of Culebra, Puerto Rico
  15. 2.8 Puerto Rico region

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 370 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.