QuakeIndex

Earthquake · reviewed by a seismologist

M 3.5md

5 km E of Villalba, Puerto Rico

· 142 km deep · released about 2.6 tons of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Villalba Municipio 3 kmCoamo Municipio 9 kmOrocovis Municipio 10 kmJuana Díaz Municipio 15 kmBarranquitas Municipio 16 kmJayuya Municipio 18 kmAibonito Municipio 18 kmSanta Isabel Municipio 20 kmCiales Municipio 20 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 3.5 (md)
Depth
142 km below the surface
Felt
no reports yet
Nearest
Villalba Municipio, 3 km W
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 611 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 2.6 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.5 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 65,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 2,900× the energy of this one
  3. Magna, Utah 2020 M 5.7 2,100× the energy of this one
  4. This earthquake M 3.5 about 2.6 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 5.4× 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 18.1280, -66.4393. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Villalba Municipio, PR 3 km (2 mi) E of here earthquakes near Villalba Municipio
Coamo Municipio, PR 9 km (6 mi) WNW of here earthquakes near Coamo Municipio
Orocovis Municipio, PR 10 km (6 mi) S of here earthquakes near Orocovis Municipio
Juana Díaz Municipio, PR 15 km (10 mi) NNE of here earthquakes near Juana Díaz Municipio
Barranquitas Municipio, PR 16 km (10 mi) WSW of here earthquakes near Barranquitas Municipio
Jayuya Municipio, PR 18 km (11 mi) ESE of here earthquakes near Jayuya Municipio

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

Aftershocks so far

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

  1. 2.2 2 km ENE of Maria Antonia, Puerto Rico
  2. 2.8 5 km SE of Maria Antonia, Puerto Rico
  3. 2.8 5 km SE of Maria Antonia, Puerto Rico
  4. 2.7 6 km SE of Maria Antonia, Puerto Rico
  5. 2.3 2 km SW of Indios, Puerto Rico
  6. 3.1 1 km S of Toa Alta, Puerto Rico
  7. 2.4 6 km NE of Yauco, Puerto Rico
  8. 2.1 7 km SSE of Ponce, Puerto Rico
  9. 2.4 2 km E of Maria Antonia, Puerto Rico
  10. 2.4 3 km E of Tallaboa, Puerto Rico
  11. 2.4 10 km SSE of Indios, Puerto Rico
  12. 1.9 1 km NNE of Yauco, Puerto Rico
  13. 3.0 2 km ENE of Cidra, Puerto Rico
  14. 2.8 2 km NE of Yauco, Puerto Rico
  15. 2.0 3 km SSE of Maria Antonia, 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 6.4 on 2020-01-07 — it released about 23,000 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.