QuakeIndex

Earthquake · reviewed by a seismologist

M 3.0md

19 km WSW of Esperanza, Puerto Rico

· 51 km deep · released about 950 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Humacao Municipio 21 kmYabucoa Municipio 24 kmNaguabo Municipio 25 kmVieques Municipio 25 kmCeiba Municipio 27 kmMaunabo Municipio 28 kmLas Piedras Municipio 32 kmPatillas Municipio 37 kmJuncos Municipio 38 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 3.0 (md)
Depth
51 km below the surface
Felt
no reports yet
Nearest
Humacao Municipio, 21 km NW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 233 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 950 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.0 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 350,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 16,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 11,000× the energy of this one
  4. This earthquake M 3.0 about 950 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 18.0088, -65.6352. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Humacao Municipio, PR 21 km (13 mi) SE of here earthquakes near Humacao Municipio
Yabucoa Municipio, PR 24 km (15 mi) ESE of here earthquakes near Yabucoa Municipio
Naguabo Municipio, PR 25 km (15 mi) SSE of here earthquakes near Naguabo Municipio
Vieques Municipio, PR 25 km (16 mi) WSW of here earthquakes near Vieques Municipio
Ceiba Municipio, PR 27 km (17 mi) S of here earthquakes near Ceiba Municipio
Maunabo Municipio, PR 28 km (17 mi) E of here earthquakes near Maunabo Municipio

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

Aftershocks so far

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

  1. 2.7 24 km SE of Emajagua, Puerto Rico
  2. 2.1 10 km E of El Negro, Puerto Rico
  3. 3.2 11 km SSE of Punta Santiago, Puerto Rico
  4. 2.1 5 km SSE of Bajandas, Puerto Rico
  5. 2.5 14 km N of Isabel Segunda, Puerto Rico
  6. 3.0 6 km SE of Isabel Segunda, Puerto Rico
  7. 2.6 14 km SE of Esperanza, Puerto Rico
  8. 2.4 7 km WNW of Esperanza, Puerto Rico
  9. 2.7 28 km SSW of Esperanza, Puerto Rico
  10. 2.4 3 km E of G. L. Garcia, Puerto Rico
  11. 2.1 7 km SSW of Jagual, Puerto Rico
  12. 3.0 14 km SE of Isabel Segunda, Puerto Rico
  13. 1.9 11 km S of Emajagua, Puerto Rico
  14. 2.6 15 km WSW of Esperanza, Puerto Rico
  15. 2.5 19 km S of Esperanza, 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 500 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.