QuakeIndex

Earthquake · reviewed by a seismologist

M 2.6md

18 km SSE of Guánica, Puerto Rico

· 7.8 km deep · released about 210 lb of TNT

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10 km30 km60 km120 km N Guánica Municipio 17 kmGuayanilla Municipio 23 kmLajas Municipio 27 kmPeñuelas Municipio 28 kmYauco Municipio 31 kmSabana Grande Municipio 32 kmPonce Municipio 34 kmSan Germán Municipio 38 kmCabo Rojo Municipio 40 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
7.8 km below the surface
Felt
no reports yet
Nearest
Guánica Municipio, 17 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 356 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 210 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 72,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 51,000× the energy of this one
  3. Around the size people start to feel M 3.0 4.6× the energy of this one
  4. This earthquake M 2.6 about 210 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 17.8093, -66.8558. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Guánica Municipio, PR 17 km (11 mi) SSE of here earthquakes near Guánica Municipio
Guayanilla Municipio, PR 23 km (14 mi) SSW of here earthquakes near Guayanilla Municipio
Lajas Municipio, PR 27 km (17 mi) SE of here earthquakes near Lajas Municipio
Peñuelas Municipio, PR 28 km (17 mi) SSW of here earthquakes near Peñuelas Municipio
Yauco Municipio, PR 31 km (19 mi) S of here earthquakes near Yauco Municipio
Sabana Grande Municipio, PR 32 km (20 mi) SSE of here earthquakes near Sabana Grande Municipio

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

Aftershocks so far

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

  1. 2.7 1 km SSE of Tallaboa, Puerto Rico
  2. 2.1 1 km SSW of Adjuntas, Puerto Rico
  3. 2.2 13 km SSE of Maria Antonia, Puerto Rico
  4. 2.2 13 km SSE of Maria Antonia, Puerto Rico
  5. 2.5 13 km SSE of Maria Antonia, Puerto Rico
  6. 3.3 10 km SSE of Maria Antonia, Puerto Rico
  7. 2.5 9 km SSE of Maria Antonia, Puerto Rico
  8. 2.6 7 km WNW of Adjuntas, Puerto Rico
  9. 1.7 6 km SW of Guánica, Puerto Rico
  10. 2.0 7 km SSE of Guánica, Puerto Rico
  11. 2.5 13 km SSE of Maria Antonia, Puerto Rico
  12. 2.5 14 km SSE of Maria Antonia, Puerto Rico
  13. 2.4 13 km SSE of Maria Antonia, Puerto Rico
  14. 2.9 12 km SSE of Maria Antonia, Puerto Rico
  15. 2.5 12 km SSE of Maria Antonia, 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 580,000 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.