QuakeIndex

Earthquake · reviewed by a seismologist

M 3.0md

13 km N of Loíza, Puerto Rico

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

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10 km30 km60 km120 km N Loíza Municipio 14 kmCarolina Municipio 20 kmRío Grande Municipio 22 kmSan Juan Municipio 25 kmCanóvanas Municipio 25 kmLuquillo Municipio 27 kmTrujillo Alto Municipio 28 kmCataño Municipio 31 kmGurabo Municipio 33 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
no reports yet
Nearest
Loíza Municipio, 14 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1204 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 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 6.7 320,000× 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 10,000× 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 18.5560, -65.8783. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Loíza Municipio, PR 14 km (9 mi) NNE of here earthquakes near Loíza Municipio
Carolina Municipio, PR 20 km (12 mi) NNE of here earthquakes near Carolina Municipio
Río Grande Municipio, PR 22 km (13 mi) NNW of here earthquakes near Río Grande Municipio
San Juan Municipio, PR 25 km (16 mi) NE of here earthquakes near San Juan Municipio
Canóvanas Municipio, PR 25 km (16 mi) N of here earthquakes near Canóvanas Municipio
Luquillo Municipio, PR 27 km (17 mi) NW of here earthquakes near Luquillo Municipio

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

Aftershocks so far

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

  1. 3.3 Puerto Rico region
  2. 3.0 24 km NNW of Loíza, Puerto Rico
  3. 2.5 2 km SSE of Caguas, Puerto Rico
  4. 2.3 Puerto Rico region
  5. 3.2 2 km NNW of San Juan, Puerto Rico
  6. 3.3 4 km ENE of Guaynabo, Puerto Rico
  7. 3.0 57 km NNE of San Juan, Puerto Rico
  8. 2.6 Puerto Rico region
  9. 2.6 2 km WNW of Bayamon, Puerto Rico
  10. 2.7 1 km W of Juncos, Puerto Rico
  11. 3.0 Puerto Rico region
  12. 3.2 6 km N of San Juan, Puerto Rico
  13. 3.0 Puerto Rico region
  14. 3.6 43 km N of Suárez, Puerto Rico
  15. 3.6 0 km ENE of Pájaros, 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.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.