QuakeIndex

Earthquake · reviewed by a seismologist

M 2.6md

4 km ESE of Adjuntas, Puerto Rico

· 19 km deep · released about 280 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Adjuntas Municipio 9 kmJayuya Municipio 12 kmUtuado Municipio 14 kmPeñuelas Municipio 15 kmPonce Municipio 18 kmYauco Municipio 20 kmGuayanilla Municipio 20 kmVillalba Municipio 22 kmCiales Municipio 24 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
19 km below the surface
Felt
no reports yet
Nearest
Adjuntas Municipio, 9 km WNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1053 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 280 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 53,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 38,000× the energy of this one
  3. Around the size people start to feel M 3.0 3.3× the energy of this one
  4. This earthquake M 2.6 about 280 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 18.1507, -66.6828. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Adjuntas Municipio, PR 9 km (5 mi) ESE of here earthquakes near Adjuntas Municipio
Jayuya Municipio, PR 12 km (8 mi) WSW of here earthquakes near Jayuya Municipio
Utuado Municipio, PR 14 km (8 mi) S of here earthquakes near Utuado Municipio
Peñuelas Municipio, PR 15 km (9 mi) NNE of here earthquakes near Peñuelas Municipio
Ponce Municipio, PR 18 km (11 mi) NNW of here earthquakes near Ponce Municipio
Yauco Municipio, PR 20 km (12 mi) ENE of here earthquakes near Yauco Municipio

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

Aftershocks so far

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

  1. 2.0 7 km SE of Maria Antonia, Puerto Rico
  2. 2.5 4 km SSW of Guánica, Puerto Rico
  3. 2.8 3 km SW of Guánica, Puerto Rico
  4. 2.6 4 km NNE of Carrizales, Puerto Rico
  5. 2.1 Puerto Rico region
  6. 2.1 5 km SSW of Gu?nica, Puerto Rico
  7. 2.3 3 km WSW of Gu?nica, Puerto Rico
  8. 2.9 2 km WSW of Guánica, Puerto Rico
  9. 2.5 2 km WSW of Guánica, Puerto Rico
  10. 2.1 3 km SSW of Guánica, Puerto Rico
  11. 1.9 1 km W of Fuig, Puerto Rico
  12. 2.1 2 km WSW of Guánica, Puerto Rico
  13. 2.3 3 km WNW of Palmarejo, Puerto Rico
  14. 2.5 3 km SW of Gu?nica, Puerto Rico
  15. 2.4 3 km SW of Gu?nica, 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.

For this area

The largest earthquake within 50 km in our catalogue was M 6.4 on 2020-01-07 — it released about 420,000 times the energy of this one.

From the QuakeIndex catalogue, built from the USGS FDSN event service.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.