QuakeIndex

Earthquake · reviewed by a seismologist

M 3.0md

4 km ESE of Bayamon, Puerto Rico

· 9.0 km deep · released about 830 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Caguas Municipio 5 kmCidra Municipio 9 kmSan Lorenzo Municipio 11 kmCayey Municipio 11 kmAguas Buenas Municipio 11 kmGurabo Municipio 15 kmComerío Municipio 17 kmJuncos Municipio 18 kmTrujillo Alto 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 3.0 (md)
Depth
9.0 km below the surface
Felt
37 reports · strongest reported intensity V
Nearest
Caguas Municipio, 5 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2892 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 37 people have reported feeling it to USGS.

How big was it?

This earthquake released about 830 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 6.7 410,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 18,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 13,000× the energy of this one
  4. This earthquake M 3.0 about 830 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 18.1695, -66.0735. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Caguas Municipio, PR 5 km (3 mi) SSW of here earthquakes near Caguas Municipio
Cidra Municipio, PR 9 km (6 mi) E of here earthquakes near Cidra Municipio
San Lorenzo Municipio, PR 11 km (7 mi) WNW of here earthquakes near San Lorenzo Municipio
Cayey Municipio, PR 11 km (7 mi) NE of here earthquakes near Cayey Municipio
Aguas Buenas Municipio, PR 11 km (7 mi) SSE of here earthquakes near Aguas Buenas Municipio
Gurabo Municipio, PR 15 km (9 mi) SW of here earthquakes near Gurabo Municipio

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

Aftershocks so far

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

  1. 1.6 2 km SE of Cayey, Puerto Rico
  2. 1.6 4 km WNW of Yaurel, Puerto Rico
  3. 1.6 2 km E of Bayamon, Puerto Rico
  4. 2.2 5 km ESE of G. L. Garcia, Puerto Rico
  5. 2.3 3 km SSW of Vega Alta, Puerto Rico
  6. 2.0 2 km SW of Corozal, Puerto Rico
  7. 2.3 3 km NW of Guayabal, Puerto Rico
  8. 2.1 2 km SSW of Aguas Buenas, Puerto Rico
  9. 2.8 Puerto Rico region
  10. 1.7 7 km SE of Pájaros, Puerto Rico
  11. 1.7 12 km S of Jauca, Puerto Rico
  12. 2.0 18 km SE of El Negro, Puerto Rico
  13. 2.0 1 km SSW of Jauca, Puerto Rico
  14. 2.4 21 km SE of El Negro, Puerto Rico
  15. 2.3 6 km NW of Yaurel, 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 4.6 on 2016-12-05 — 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.