QuakeIndex

Earthquake · reviewed by a seismologist

M 3.0md

5 km NW of San Juan, Puerto Rico

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

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10 km30 km60 km120 km N Cataño Municipio 6 kmToa Baja Municipio 7 kmSan Juan Municipio 12 kmDorado Municipio 12 kmBayamón Municipio 16 kmGuaynabo Municipio 17 kmToa Alta Municipio 18 kmVega Alta Municipio 21 kmCarolina Municipio 22 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
110 km below the surface
Felt
1 report · strongest reported intensity II
Nearest
Cataño Municipio, 6 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 877 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 1,100 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 6.7 310,000× 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 9,800× 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 18.4962, -66.1465. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Cataño Municipio, PR 6 km (4 mi) N of here earthquakes near Cataño Municipio
Toa Baja Municipio, PR 7 km (4 mi) NE of here earthquakes near Toa Baja Municipio
San Juan Municipio, PR 12 km (7 mi) NW of here earthquakes near San Juan Municipio
Dorado Municipio, PR 12 km (8 mi) ENE of here earthquakes near Dorado Municipio
Bayamón Municipio, PR 16 km (10 mi) N of here earthquakes near Bayamón Municipio
Guaynabo Municipio, PR 17 km (11 mi) NNW 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. 2.7 5 km SSE of G. L. Garcia, Puerto Rico
  2. 2.9 36 km N of Brenas, Puerto Rico
  3. 3.2 41 km N of San Juan, Puerto Rico
  4. 2.3 0 km ENE of Parcelas La Milagrosa, Puerto Rico
  5. 2.1 5 km W of Orocovis, Puerto Rico
  6. 3.4 9 km NNE of San Juan, Puerto Rico
  7. 3.2 14 km N of Dorado, Puerto Rico
  8. 2.1 4 km NW of Orocovis, Puerto Rico
  9. 3.2 0 km ENE of Cidra, Puerto Rico
  10. 2.2 2 km NW of Orocovis, Puerto Rico
  11. 2.7 23 km NNE of Tierras Nuevas Poniente, Puerto Rico
  12. 2.7 21 km NNE of Tierras Nuevas Poniente, Puerto Rico
  13. 3.4 1 km S of Canovanas, Puerto Rico
  14. 2.3 1 km W of Orocovis, Puerto Rico
  15. 2.9 4 km NW of Orocovis, 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 4.4 on 2018-12-09 — it released about 110 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.