QuakeIndex

Earthquake · reviewed by a seismologist

M 2.8Md

Mona Passage

· 79 km deep · released about 480 lb of TNT

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10 km30 km60 km120 km N Isabela Municipio 13 kmAguadilla Municipio 17 kmQuebradillas Municipio 19 kmMoca Municipio 25 kmCamuy Municipio 25 kmAguada Municipio 29 kmSan Sebastián Municipio 31 kmHatillo Municipio 31 kmAñasco Municipio 36 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
79 km below the surface
Felt
no reports yet
Nearest
Isabela Municipio, 13 km SSE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3424 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 18.5995, -67.0384. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Isabela Municipio, PR 13 km (8 mi) NNW of here earthquakes near Isabela Municipio
Aguadilla Municipio, PR 17 km (11 mi) NE of here earthquakes near Aguadilla Municipio
Quebradillas Municipio, PR 19 km (12 mi) NW of here earthquakes near Quebradillas Municipio
Moca Municipio, PR 25 km (16 mi) N of here earthquakes near Moca Municipio
Camuy Municipio, PR 25 km (16 mi) NW of here earthquakes near Camuy Municipio
Aguada Municipio, PR 29 km (18 mi) NNE of here earthquakes near Aguada Municipio

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

Aftershocks so far

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

  1. 2.5 10 km N of Hatillo, Puerto Rico
  2. 2.7 46 km NNW of San Antonio, Puerto Rico
  3. 2.8 50 km NNW of San Antonio, Puerto Rico
  4. 2.3 2 km NNE of Mayagüez, Puerto Rico
  5. 2.5 4 km WSW of Las Marías, Puerto Rico
  6. 2.6 34 km NW of Rincón, Puerto Rico
  7. 3.1 38 km NW of Rincón, Puerto Rico
  8. 3.0 39 km NW of Rincón, Puerto Rico
  9. 1.9 33 km NW of Rincón, Puerto Rico
  10. 1.9 36 km NW of Rincón, Puerto Rico
  11. 2.6 34 km NNW of San Antonio, Puerto Rico
  12. 2.3 4 km WSW of Las Marías, Puerto Rico
  13. 2.6 35 km NW of Rincón, Puerto Rico
  14. 2.7 8 km WNW of Maricao, Puerto Rico
  15. 2.3 10 km NNE of Carrizales, 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.