QuakeIndex

Earthquake · reviewed by a seismologist

M 3.0md

28 km SW of Esperanza, Puerto Rico

· 108 km deep · released about 1,100 lb of TNT

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10 km30 km60 km120 km N Maunabo Municipio 31 kmYabucoa Municipio 31 kmHumacao Municipio 32 kmVieques Municipio 34 kmNaguabo Municipio 38 kmPatillas Municipio 40 kmCeiba Municipio 41 kmLas Piedras Municipio 42 kmArroyo Municipio 45 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
108 km below the surface
Felt
no reports yet
Nearest
Maunabo Municipio, 31 km WNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1687 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 1,100 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 6.7 320,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 14,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 10,000× the energy of this one
  4. This earthquake M 3.0 about 1,100 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 17.8873, -65.6277. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Maunabo Municipio, PR 31 km (19 mi) ESE of here earthquakes near Maunabo Municipio
Yabucoa Municipio, PR 31 km (19 mi) SE of here earthquakes near Yabucoa Municipio
Humacao Municipio, PR 32 km (20 mi) SSE of here earthquakes near Humacao Municipio
Vieques Municipio, PR 34 km (21 mi) SW of here earthquakes near Vieques Municipio
Naguabo Municipio, PR 38 km (23 mi) SSE of here earthquakes near Naguabo Municipio
Patillas Municipio, PR 40 km (25 mi) ESE of here earthquakes near Patillas Municipio

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

Aftershocks so far

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

  1. 2.7 2 km NW of Punta Santiago, Puerto Rico
  2. 3.5 18 km S of Esperanza, Puerto Rico
  3. 2.3 2 km NNW of Punta Santiago, Puerto Rico
  4. 2.7 18 km SSE of Arroyo, Puerto Rico
  5. 2.3 4 km W of Las Piedras, Puerto Rico
  6. 2.9 33 km SSW of Esperanza, Puerto Rico
  7. 2.3 10 km SW of Esperanza, Puerto Rico
  8. 3.6 5 km E of Candelero Arriba, Puerto Rico
  9. 3.1 9 km SE of Esperanza, Puerto Rico
  10. 2.3 2 km SE of Lamboglia, Puerto Rico
  11. 1.9 2 km SSE of Lamboglia, Puerto Rico
  12. 2.9 25 km SE of Emajagua, Puerto Rico
  13. 3.5 14 km SSE of Lamboglia, Puerto Rico
  14. 2.8 17 km S of Lamboglia, Puerto Rico
  15. 3.0 28 km SE of El Negro, 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 450 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.