QuakeIndex

Earthquake · reviewed by a seismologist

M 3.0md

0 km W of Sumidero, Puerto Rico

· 76 km deep · released about 990 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Aguas Buenas Municipio 4 kmCidra Municipio 6 kmCaguas Municipio 9 kmComerío Municipio 9 kmCayey Municipio 13 kmGuaynabo Municipio 14 kmBayamón Municipio 15 kmNaranjito Municipio 15 kmGurabo Municipio 17 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
76 km below the surface
Felt
1 report · strongest reported intensity III
Nearest
Aguas Buenas Municipio, 4 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1653 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 990 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 6.7 340,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 15,000× 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 990 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 18.2185, -66.1320. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Aguas Buenas Municipio, PR 4 km (3 mi) S of here earthquakes near Aguas Buenas Municipio
Cidra Municipio, PR 6 km (4 mi) NNE of here earthquakes near Cidra Municipio
Caguas Municipio, PR 9 km (5 mi) W of here earthquakes near Caguas Municipio
Comerío Municipio, PR 9 km (6 mi) E of here earthquakes near Comerío Municipio
Cayey Municipio, PR 13 km (8 mi) N of here earthquakes near Cayey Municipio
Guaynabo Municipio, PR 14 km (9 mi) S of here earthquakes near Guaynabo 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. 2.5 2 km SSE of Jobos, Puerto Rico
  2. 3.1 5 km SSE of Pájaros, Puerto Rico
  3. 2.8 7 km NNW of San Juan, Puerto Rico
  4. 2.2 0 km N of Salinas, Puerto Rico
  5. 2.8 3 km ESE of Jobos, Puerto Rico
  6. 2.6 3 km NNW of Coamo, Puerto Rico
  7. 2.9 1 km WNW of Río Lajas, Puerto Rico
  8. 3.0 5 km N of Levittown, Puerto Rico
  9. 2.0 Puerto Rico region
  10. 2.7 5 km NW of Orocovis, Puerto Rico
  11. 3.1 1 km NNW of Campanilla, Puerto Rico
  12. 3.1 2 km NW of Cataño, Puerto Rico
  13. 2.1 6 km SSW of Playita Cortada, Puerto Rico
  14. 2.6 5 km ESE of Naranjito, Puerto Rico
  15. 3.0 4 km S of G. L. Garcia, 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 240 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.