QuakeIndex

Earthquake · reviewed by a seismologist

M 2.6md

65 km S of Arroyo, Puerto Rico

· 12 km deep · released about 260 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Arroyo Municipio 66 kmGuayama Municipio 67 kmPatillas Municipio 69 kmMaunabo Municipio 70 kmSalinas Municipio 71 kmSanta Isabel Municipio 75 kmYabucoa Municipio 77 kmCayey Municipio 82 kmJuana Díaz Municipio 85 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 2.6 (md)
Depth
12 km below the surface
Felt
no reports yet
Nearest
Arroyo Municipio, 66 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2503 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 260 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 59,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 42,000× the energy of this one
  3. Around the size people start to feel M 3.0 3.7× the energy of this one
  4. This earthquake M 2.6 about 260 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 17.3796, -66.0165. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Arroyo Municipio, PR 66 km (41 mi) S of here earthquakes near Arroyo Municipio
Guayama Municipio, PR 67 km (42 mi) S of here earthquakes near Guayama Municipio
Patillas Municipio, PR 69 km (43 mi) S of here earthquakes near Patillas Municipio
Maunabo Municipio, PR 70 km (44 mi) S of here earthquakes near Maunabo Municipio
Salinas Municipio, PR 71 km (44 mi) SSE of here earthquakes near Salinas Municipio
Santa Isabel Municipio, PR 75 km (47 mi) SSE of here earthquakes near Santa Isabel Municipio

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

Aftershocks so far

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

  1. 2.6 25 km S of Jobos, Puerto Rico
  2. 2.5 41 km SSE of Arroyo, Puerto Rico
  3. 2.1 22 km S of Lamboglia, Puerto Rico
  4. 2.5 18 km S of Lamboglia, Puerto Rico
  5. 3.0 18 km S of Lamboglia, Puerto Rico
  6. 2.1 24 km S of Lamboglia, Puerto Rico
  7. 3.1 60 km S of Santa Isabel, Puerto Rico
  8. 2.3 29 km S of Central Aguirre, Puerto Rico
  9. 2.9 26 km SSE of Arroyo, Puerto Rico
  10. 3.2 21 km SSE of Lamboglia, Puerto Rico
  11. 2.6 18 km S of Jobos, Puerto Rico
  12. 2.5 Puerto Rico region
  13. 3.0 18 km S of Central Aguirre, Puerto Rico
  14. 3.0 Puerto Rico region
  15. 2.4 23 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.