QuakeIndex

Earthquake · reviewed by a seismologist

M 2.4Md

53 km NNE of San Juan, Puerto Rico

· 11 km deep · released about 120 lb of TNT

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10 km30 km60 km120 km N Loíza Municipio 53 kmSan Juan Municipio 57 kmCataño Municipio 58 kmToa Baja Municipio 58 kmCarolina Municipio 59 kmDorado Municipio 60 kmRío Grande Municipio 63 kmTrujillo Alto Municipio 66 kmCanóvanas Municipio 66 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 2.4 (Md)
Depth
11 km below the surface
Felt
no reports yet
Nearest
Loíza Municipio, 53 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3703 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

How big was it?

This earthquake released about 120 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.4 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 130,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 89,000× the energy of this one
  3. Around the size people start to feel M 3.0 7.9× the energy of this one
  4. This earthquake M 2.4 about 120 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 18.9255, -65.9440. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Loíza Municipio, PR 53 km (33 mi) N of here earthquakes near Loíza Municipio
San Juan Municipio, PR 57 km (36 mi) NNE of here earthquakes near San Juan Municipio
Cataño Municipio, PR 58 km (36 mi) NNE of here earthquakes near Cataño Municipio
Toa Baja Municipio, PR 58 km (36 mi) NNE of here earthquakes near Toa Baja Municipio
Carolina Municipio, PR 59 km (37 mi) N of here earthquakes near Carolina Municipio
Dorado Municipio, PR 60 km (37 mi) NNE of here earthquakes near Dorado Municipio

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

Aftershocks so far

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

  1. 1.6 61 km NNE of Luquillo, Puerto Rico
  2. 2.5 79 km NNE of Vieques, Puerto Rico
  3. 2.9 63 km N of Brenas, Puerto Rico
  4. 3.1 54 km N of Brenas, Puerto Rico
  5. 3.6 57 km N of Brenas, Puerto Rico
  6. 2.3 51 km N of Suárez, Puerto Rico
  7. 2.7 46 km N of Brenas, Puerto Rico
  8. 2.9 72 km N of San Juan, Puerto Rico
  9. 2.8 86 km NNE of San Juan, Puerto Rico
  10. 2.5 25 km N of Loíza, Puerto Rico
  11. 2.9 26 km N of Loíza, Puerto Rico
  12. 2.8 51 km NNE of Vieques, Puerto Rico
  13. 3.1 76 km N of San Juan, Puerto Rico
  14. 2.7 31 km NE of Vieques, Puerto Rico
  15. 2.6 66 km N 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

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