QuakeIndex

Earthquake · reviewed by a seismologist

M 2.5md

42 km NNW of San Antonio, Puerto Rico

· 11 km deep · released about 140 lb of TNT

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10 km30 km60 km120 km N Aguadilla Municipio 42 kmIsabela Municipio 48 kmAguada Municipio 52 kmRincón Municipio 55 kmMoca Municipio 55 kmQuebradillas Municipio 56 kmCamuy Municipio 62 kmAñasco Municipio 63 kmSan Sebastián Municipio 65 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 2.5 (md)
Depth
11 km below the surface
Felt
no reports yet
Nearest
Aguadilla Municipio, 42 km SSE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3392 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 140 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 110,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 75,000× the energy of this one
  3. Around the size people start to feel M 3.0 6.7× the energy of this one
  4. This earthquake M 2.5 about 140 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 18.8350, -67.2868. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Aguadilla Municipio, PR 42 km (26 mi) NNW of here earthquakes near Aguadilla Municipio
Isabela Municipio, PR 48 km (30 mi) NW of here earthquakes near Isabela Municipio
Aguada Municipio, PR 52 km (32 mi) NNW of here earthquakes near Aguada Municipio
Rincón Municipio, PR 55 km (34 mi) N of here earthquakes near Rincón Municipio
Moca Municipio, PR 55 km (34 mi) NNW of here earthquakes near Moca Municipio
Quebradillas Municipio, PR 56 km (35 mi) NW of here earthquakes near Quebradillas Municipio

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

Aftershocks so far

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

  1. 2.5 17 km NW of Rincón, Puerto Rico
  2. 3.0 28 km NNW of Rincón, Puerto Rico
  3. 2.8 50 km NNW of San Antonio, Puerto Rico
  4. 2.8 50 km NNW of San Antonio, Puerto Rico
  5. 2.6 14 km N of Quebradillas, Puerto Rico
  6. 3.0 58 km NNW of San Antonio, Puerto Rico
  7. 2.3 41 km NNW of San Antonio, Puerto Rico
  8. 3.1 48 km NNW of San Antonio, Puerto Rico
  9. 3.0 66 km N of Isabela, Puerto Rico
  10. 3.2 82 km NNW of San Antonio, Puerto Rico
  11. 2.7 67 km NNW of San Antonio, Puerto Rico
  12. 2.6 74 km NW of Aguadilla, Puerto Rico
  13. 2.1 32 km WNW of Rincón, Puerto Rico
  14. 2.8 46 km NW of Rincón, Puerto Rico
  15. 3.0 12 km NNE of Isabela, 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.