QuakeIndex

Earthquake · reviewed by a seismologist

M 2.9md

84 km S of Jobos, Puerto Rico

· 58 km deep · released about 590 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Guayama Municipio 87 kmArroyo Municipio 87 kmSalinas Municipio 87 kmSanta Isabel Municipio 88 kmPatillas Municipio 91 kmMaunabo Municipio 93 kmJuana Díaz Municipio 96 kmYabucoa Municipio 101 kmCayey Municipio 101 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 2.9 (md)
Depth
58 km below the surface
Felt
no reports yet
Nearest
Guayama Municipio, 87 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3161 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 590 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 26,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 18,000× the energy of this one
  3. Around the size people start to feel M 3.0 1.6× the energy of this one
  4. This earthquake M 2.9 about 590 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 17.1958, -66.1495. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Guayama Municipio, PR 87 km (54 mi) S of here earthquakes near Guayama Municipio
Arroyo Municipio, PR 87 km (54 mi) S of here earthquakes near Arroyo Municipio
Salinas Municipio, PR 87 km (54 mi) S of here earthquakes near Salinas Municipio
Santa Isabel Municipio, PR 88 km (55 mi) SSE of here earthquakes near Santa Isabel Municipio
Patillas Municipio, PR 91 km (57 mi) S of here earthquakes near Patillas Municipio
Maunabo Municipio, PR 93 km (58 mi) SSW of here earthquakes near Maunabo Municipio

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

Aftershocks so far

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

  1. 2.8 49 km S of Central Aguirre, Puerto Rico
  2. 3.1 65 km SSE of Arroyo, Puerto Rico
  3. 2.9 64 km SSW of Santa Isabel, Puerto Rico
  4. 3.1 60 km S of Santa Isabel, Puerto Rico
  5. 2.6 40 km S of Central Aguirre, Puerto Rico
  6. 3.2 58 km S of Jobos, Puerto Rico
  7. 2.3 68 km S of Santa Isabel, Puerto Rico
  8. 2.6 65 km S of Arroyo, Puerto Rico
  9. 2.6 55 km S of Jobos, Puerto Rico
  10. 2.4 68 km SSE of Lamboglia, Puerto Rico
  11. 3.0 75 km SSE of Arroyo, 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.