QuakeIndex

Earthquake · reviewed by a seismologist

M 3.1md

29 km ESE of Esperanza, Puerto Rico

· 22 km deep · released about 1,200 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Vieques Municipio 28 kmCulebra Municipio 41 kmCeiba Municipio 52 kmNaguabo Municipio 60 kmFajardo Municipio 60 kmHumacao Municipio 62 kmYabucoa Municipio 67 kmLuquillo Municipio 68 kmMaunabo Municipio 71 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 3.1 (md)
Depth
22 km below the surface
Felt
no reports yet
Nearest
Vieques Municipio, 28 km NW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2763 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 1,200 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.1 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 280,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 12,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 8,800× the energy of this one
  4. This earthquake M 3.1 about 1,200 lb of TNT
  5. Around the size people start to feel M 3.0 this one released 1.3× more

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 17.9670, -65.2293. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Vieques Municipio, PR 28 km (17 mi) SE of here earthquakes near Vieques Municipio
Culebra Municipio, PR 41 km (25 mi) SSE of here earthquakes near Culebra Municipio
Ceiba Municipio, PR 52 km (32 mi) SE of here earthquakes near Ceiba Municipio
Naguabo Municipio, PR 60 km (37 mi) ESE of here earthquakes near Naguabo Municipio
Fajardo Municipio, PR 60 km (37 mi) SE of here earthquakes near Fajardo Municipio
Humacao Municipio, PR 62 km (38 mi) ESE of here earthquakes near Humacao 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. 1.9 17 km S of Esperanza, Puerto Rico
  2. 2.6 11 km SE of Isabel Segunda, Puerto Rico
  3. 2.7 31 km SE of Esperanza, Puerto Rico
  4. 1.9 16 km SSW of Esperanza, Puerto Rico
  5. 2.7 18 km SSE of Esperanza, Puerto Rico
  6. 3.1 23 km SSW of Cruz Bay, U.S. Virgin Islands
  7. 1.7 18 km SSE of Punta Santiago, Puerto Rico
  8. 2.5 26 km SE of Esperanza, Puerto Rico
  9. 2.9 10 km SSE of Esperanza, Puerto Rico
  10. 2.4 18 km S of Esperanza, Puerto Rico
  11. 2.0 21 km S of Esperanza, Puerto Rico
  12. 2.2 33 km S of Charlotte Amalie, U.S. Virgin Islands
  13. 2.2 Virgin Islands
  14. 2.2 18 km SSW of Charlotte Amalie, U.S. Virgin Islands
  15. 2.3 18 km WNW of Saint Croix, 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 4.3 on 2016-09-02 — it released about 70 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.