QuakeIndex

Earthquake · reviewed by a seismologist

M 3.0Md

49 km N of Loíza, Puerto Rico

· 52 km deep · released about 950 lb of TNT

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10 km30 km60 km120 km N Loíza Municipio 49 kmCarolina Municipio 55 kmSan Juan Municipio 55 kmCataño Municipio 57 kmRío Grande Municipio 57 kmToa Baja Municipio 58 kmLuquillo Municipio 60 kmDorado Municipio 61 kmCanóvanas Municipio 61 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
52 km below the surface
Felt
no reports yet
Nearest
Loíza Municipio, 49 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3390 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 950 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 6.7 350,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 16,000× 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 950 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 18.8820, -65.8730. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Loíza Municipio, PR 49 km (31 mi) N of here earthquakes near Loíza Municipio
Carolina Municipio, PR 55 km (34 mi) N of here earthquakes near Carolina Municipio
San Juan Municipio, PR 55 km (34 mi) NNE of here earthquakes near San Juan Municipio
Cataño Municipio, PR 57 km (35 mi) NNE of here earthquakes near Cataño Municipio
Río Grande Municipio, PR 57 km (35 mi) N of here earthquakes near Río Grande Municipio
Toa Baja Municipio, PR 58 km (36 mi) NE of here earthquakes near Toa Baja Municipio

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

Aftershocks so far

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

  1. 2.3 47 km NNE of Luquillo, Puerto Rico
  2. 3.2 90 km N of Loíza, Puerto Rico
  3. 2.3 49 km NNE of Luquillo, Puerto Rico
  4. 2.2 48 km NNE of Luquillo, Puerto Rico
  5. 2.1 52 km NNE of Luquillo, Puerto Rico
  6. 2.4 60 km NNE of Luquillo, Puerto Rico
  7. 3.1 55 km NNE of Luquillo, Puerto Rico
  8. 2.4 52 km NNE of Luquillo, Puerto Rico
  9. 2.8 55 km NNE of Luquillo, Puerto Rico
  10. 2.9 75 km N of Suárez, Puerto Rico
  11. 2.9 47 km NNE of San Juan, Puerto Rico
  12. 2.5 17 km N of Loíza, Puerto Rico
  13. 2.1 64 km NNE of Luquillo, Puerto Rico
  14. 2.6 27 km NNE of Luquillo, Puerto Rico
  15. 2.9 8 km ENE of San Juan, 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

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