QuakeIndex

Earthquake · reviewed by a seismologist

M 2.8md

41 km SE of Esperanza, Puerto Rico

· 8.1 km deep · released about 480 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Vieques Municipio 41 kmCulebra Municipio 53 kmCeiba Municipio 65 kmNaguabo Municipio 72 kmHumacao Municipio 73 kmFajardo Municipio 73 kmYabucoa Municipio 77 kmMaunabo Municipio 79 kmLuquillo Municipio 81 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
8.1 km below the surface
Felt
no reports yet
Nearest
Vieques Municipio, 41 km NW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 207 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 17.8685, -65.1578. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Vieques Municipio, PR 41 km (25 mi) SE of here earthquakes near Vieques Municipio
Culebra Municipio, PR 53 km (33 mi) SSE of here earthquakes near Culebra Municipio
Ceiba Municipio, PR 65 km (40 mi) SE of here earthquakes near Ceiba Municipio
Naguabo Municipio, PR 72 km (45 mi) ESE of here earthquakes near Naguabo Municipio
Humacao Municipio, PR 73 km (45 mi) ESE of here earthquakes near Humacao Municipio
Fajardo Municipio, PR 73 km (46 mi) SE of here earthquakes near Fajardo Municipio

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

Aftershocks so far

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

  1. 3.2 40 km SE of Esperanza, Puerto Rico
  2. 3.1 16 km SE of Esperanza, Puerto Rico
  3. 3.0 28 km SSW of Charlotte Amalie, U.S. Virgin Islands
  4. 3.1 14 km SSE of Esperanza, Puerto Rico
  5. 2.9 17 km S of Esperanza, Puerto Rico
  6. 2.9 16 km SSE of Esperanza, Puerto Rico
  7. 2.5 20 km SSW of Cruz Bay, U.S. Virgin Islands
  8. 3.1 20 km S of Cruz Bay, U.S. Virgin Islands
  9. 2.9 24 km SSW of Cruz Bay, U.S. Virgin Islands
  10. 3.0 6 km SE of Isabel Segunda, Puerto Rico
  11. 2.6 14 km SE of Esperanza, Puerto Rico
  12. 3.6 33 km NNW of Saint Croix, U.S. Virgin Islands
  13. 2.4 7 km WNW of Esperanza, Puerto Rico
  14. 2.7 28 km SSW of Esperanza, Puerto Rico
  15. 3.0 14 km SE of Isabel Segunda, 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 2021-10-08 — it released about 1,000 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.