QuakeIndex

Earthquake · reviewed by a seismologist

M 3.2md

24 km SW of Esperanza, Puerto Rico

· 12 km deep · released about 1,700 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Humacao Municipio 29 kmYabucoa Municipio 29 kmMaunabo Municipio 30 kmVieques Municipio 30 kmNaguabo Municipio 33 kmCeiba Municipio 36 kmLas Piedras Municipio 39 kmPatillas Municipio 39 kmArroyo Municipio 44 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 3.2 (md)
Depth
12 km below the surface
Felt
1 report · strongest reported intensity II
Nearest
Humacao Municipio, 29 km NW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1380 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 1 person has reported feeling it to USGS.

How big was it?

This earthquake released about 1,700 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.2 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 200,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 9,100× the energy of this one
  3. Magna, Utah 2020 M 5.7 6,500× the energy of this one
  4. This earthquake M 3.2 about 1,700 lb of TNT
  5. Around the size people start to feel M 3.0 this one released 1.7× 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 17.9287, -65.6257. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Humacao Municipio, PR 29 km (18 mi) SE of here earthquakes near Humacao Municipio
Yabucoa Municipio, PR 29 km (18 mi) ESE of here earthquakes near Yabucoa Municipio
Maunabo Municipio, PR 30 km (18 mi) ESE of here earthquakes near Maunabo Municipio
Vieques Municipio, PR 30 km (19 mi) SW of here earthquakes near Vieques Municipio
Naguabo Municipio, PR 33 km (21 mi) SSE of here earthquakes near Naguabo Municipio
Ceiba Municipio, PR 36 km (22 mi) S of here earthquakes near Ceiba 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. 2.2 12 km SSE of Arroyo, Puerto Rico
  2. 2.8 24 km ESE of El Negro, Puerto Rico
  3. 3.2 1 km NE of Bajandas, Puerto Rico
  4. 2.5 9 km SE of El Negro, Puerto Rico
  5. 3.4 1 km W of Punta Santiago, Puerto Rico
  6. 2.9 1 km W of Punta Santiago, Puerto Rico
  7. 2.9 9 km SSE of Bajandas, Puerto Rico
  8. 2.6 19 km SW of Esperanza, Puerto Rico
  9. 2.9 5 km S of Jagual, Puerto Rico
  10. 2.0 1 km NNW of Punta Santiago, Puerto Rico
  11. 2.4 2 km NW of Punta Santiago, Puerto Rico
  12. 2.1 20 km SSE of Arroyo, Puerto Rico
  13. 3.4 3 km NNE of Benitez, Puerto Rico
  14. 2.9 2 km NNW of Punta Santiago, Puerto Rico
  15. 2.8 29 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 290 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.