QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6md

1 km NNE of Yauco, Puerto Rico

· 11 km deep · released about 9 lb of TNT

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10 km30 km60 km120 km N Yauco Municipio 4 kmGuayanilla Municipio 7 kmSabana Grande Municipio 11 kmPeñuelas Municipio 13 kmGuánica Municipio 14 kmMaricao Municipio 17 kmAdjuntas Municipio 17 kmSan Germán Municipio 21 kmLajas Municipio 22 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 1.6 (md)
Depth
11 km below the surface
Felt
no reports yet
Nearest
Yauco Municipio, 4 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 460 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

How big was it?

This earthquake released about 9 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,700,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,200,000× the energy of this one
  3. Around the size people start to feel M 3.0 110× the energy of this one
  4. This earthquake M 1.6 about 9 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 18.0505, -66.8467. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Yauco Municipio, PR 4 km (3 mi) SSE of here earthquakes near Yauco Municipio
Guayanilla Municipio, PR 7 km (4 mi) NW of here earthquakes near Guayanilla Municipio
Sabana Grande Municipio, PR 11 km (7 mi) ESE of here earthquakes near Sabana Grande Municipio
Peñuelas Municipio, PR 13 km (8 mi) WNW of here earthquakes near Peñuelas Municipio
Guánica Municipio, PR 14 km (9 mi) NE of here earthquakes near Guánica Municipio
Maricao Municipio, PR 17 km (10 mi) SE of here earthquakes near Maricao 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. 2.4 0 km E of Potala Pastillo, Puerto Rico
  2. 2.3 9 km SSE of Maria Antonia, Puerto Rico
  3. 2.4 7 km SSW of Tallaboa, Puerto Rico
  4. 2.0 4 km SSW of Palmarejo, Puerto Rico
  5. 2.4 6 km SE of Maria Antonia, Puerto Rico
  6. 1.9 2 km WNW of Tallaboa, Puerto Rico
  7. 2.4 3 km SSE of Guánica, Puerto Rico
  8. 2.2 3 km SW of Adjuntas, Puerto Rico
  9. 2.5 3 km SSE of Maria Antonia, Puerto Rico
  10. 2.1 7 km SSE of Maria Antonia, Puerto Rico
  11. 2.3 4 km SSE of Maria Antonia, Puerto Rico
  12. 2.4 7 km SE of Maria Antonia, Puerto Rico
  13. 2.0 1 km NE of Maria Antonia, Puerto Rico
  14. 2.3 2 km WNW of Tallaboa, Puerto Rico
  15. 1.6 2 km NNE of Guayanilla, 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 13,000,000 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.