QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9md

17 km SSE of Guánica, Puerto Rico

· 16 km deep · released about 23 lb of TNT

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10 km30 km60 km120 km N Guánica Municipio 16 kmGuayanilla Municipio 20 kmPeñuelas Municipio 25 kmLajas Municipio 26 kmYauco Municipio 29 kmSabana Grande Municipio 30 kmPonce Municipio 32 kmSan Germán Municipio 37 kmMaricao 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 1.9 (md)
Depth
16 km below the surface
Felt
no reports yet
Nearest
Guánica Municipio, 16 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3002 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 23 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 660,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 470,000× the energy of this one
  3. Around the size people start to feel M 3.0 42× the energy of this one
  4. This earthquake M 1.9 about 23 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 17.8288, -66.8470. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Guánica Municipio, PR 16 km (10 mi) SSE of here earthquakes near Guánica Municipio
Guayanilla Municipio, PR 20 km (13 mi) SSW of here earthquakes near Guayanilla Municipio
Peñuelas Municipio, PR 25 km (16 mi) SSW of here earthquakes near Peñuelas Municipio
Lajas Municipio, PR 26 km (16 mi) SE of here earthquakes near Lajas Municipio
Yauco Municipio, PR 29 km (18 mi) S of here earthquakes near Yauco Municipio
Sabana Grande Municipio, PR 30 km (19 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

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

  1. 1.7 3 km SE of Guánica, Puerto Rico
  2. 1.7 12 km W of Adjuntas, Puerto Rico
  3. 2.1 2 km E of Juana Díaz, Puerto Rico
  4. 1.8 14 km S of Guánica, Puerto Rico
  5. 2.3 3 km W of Pole Ojea, Puerto Rico
  6. 2.4 4 km SSE of Lajas, Puerto Rico
  7. 1.6 4 km E of Tallaboa Alta, Puerto Rico
  8. 1.5 4 km SSW of Liborio Negron Torres, Puerto Rico
  9. 1.5 4 km E of Tallaboa Alta, Puerto Rico
  10. 1.9 9 km SSE of Lares, Puerto Rico
  11. 2.2 2 km SSW of Tallaboa, Puerto Rico
  12. 1.9 19 km S of Indios, Puerto Rico
  13. 1.7 4 km SSW of Pole Ojea, Puerto Rico
  14. 2.0 4 km SSW of Pole Ojea, Puerto Rico
  15. 2.1 2 km SSE of La Parguera, 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.