QuakeIndex

Earthquake · reviewed by a seismologist

M 2.8Md

31 km N of Isabela, Puerto Rico

· 63 km deep · released about 480 lb of TNT

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10 km30 km60 km120 km N Isabela Municipio 33 kmQuebradillas Municipio 36 kmAguadilla Municipio 37 kmCamuy Municipio 41 kmHatillo Municipio 44 kmMoca Municipio 46 kmAguada Municipio 49 kmSan Sebastián Municipio 51 kmArecibo Municipio 53 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 2.8 (Md)
Depth
63 km below the surface
Felt
no reports yet
Nearest
Isabela Municipio, 33 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3502 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 480 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 32,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 22,000× the energy of this one
  3. Around the size people start to feel M 3.0 2× the energy of this one
  4. This earthquake M 2.8 about 480 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 18.7842, -67.0104. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Isabela Municipio, PR 33 km (21 mi) N of here earthquakes near Isabela Municipio
Quebradillas Municipio, PR 36 km (23 mi) NNW of here earthquakes near Quebradillas Municipio
Aguadilla Municipio, PR 37 km (23 mi) NNE of here earthquakes near Aguadilla Municipio
Camuy Municipio, PR 41 km (25 mi) NNW of here earthquakes near Camuy Municipio
Hatillo Municipio, PR 44 km (27 mi) NNW of here earthquakes near Hatillo Municipio
Moca Municipio, PR 46 km (28 mi) N of here earthquakes near Moca 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. 2.6 34 km NW of San Antonio, Puerto Rico
  2. 3.0 63 km N of Hatillo, Puerto Rico
  3. 2.8 62 km NNE of Isabela, Puerto Rico
  4. 2.5 17 km N of Camuy, Puerto Rico
  5. 2.6 21 km NW of Aguadilla, Puerto Rico
  6. 3.4 78 km N of San Antonio, Puerto Rico
  7. 2.6 16 km N of Quebradillas, Puerto Rico
  8. 2.9 14 km NNE of Carrizales, Puerto Rico
  9. 3.0 11 km NE of Arecibo, Puerto Rico
  10. 3.2 15 km NNW of Camuy, Puerto Rico
  11. 2.9 66 km N of Hatillo, Puerto Rico
  12. 2.6 11 km NW of Caban, Puerto Rico
  13. 3.3 74 km N of Isabela, Puerto Rico
  14. 3.1 58 km N of Hatillo, Puerto Rico
  15. 2.8 14 km NNW of Rincón, 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.