QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9md

19 km SSE of La Parguera, Puerto Rico

· 30 km deep · released about 20 lb of TNT

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10 km30 km60 km120 km N Guánica Municipio 17 kmLajas Municipio 19 kmCabo Rojo Municipio 29 kmGuayanilla Municipio 29 kmSabana Grande Municipio 31 kmSan Germán Municipio 33 kmYauco Municipio 33 kmPeñuelas Municipio 36 kmHormigueros Municipio 38 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
30 km below the surface
Felt
no reports yet
Nearest
Guánica Municipio, 17 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3182 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 20 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 5.8 760,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 540,000× the energy of this one
  3. Around the size people start to feel M 3.0 48× the energy of this one
  4. This earthquake M 1.9 about 20 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 17.8126, -66.9873. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Guánica Municipio, PR 17 km (10 mi) SSW of here earthquakes near Guánica Municipio
Lajas Municipio, PR 19 km (12 mi) SSE of here earthquakes near Lajas Municipio
Cabo Rojo Municipio, PR 29 km (18 mi) SE of here earthquakes near Cabo Rojo Municipio
Guayanilla Municipio, PR 29 km (18 mi) SW of here earthquakes near Guayanilla Municipio
Sabana Grande Municipio, PR 31 km (19 mi) S of here earthquakes near Sabana Grande Municipio
San Germán Municipio, PR 33 km (21 mi) S of here earthquakes near San Germán Municipio

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

Aftershocks so far

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

  1. 2.6 12 km WNW of Puerto Real, Puerto Rico
  2. 1.9 6 km SSW of Guánica, Puerto Rico
  3. 2.0 4 km ENE of Hormigueros, Puerto Rico
  4. 1.6 6 km SW of La Parguera, Puerto Rico
  5. 1.9 5 km NNW of Santo Domingo, Puerto Rico
  6. 2.1 5 km N of Lluveras, Puerto Rico
  7. 2.1 20 km S of La Parguera, Puerto Rico
  8. 2.3 16 km SSW of Pole Ojea, Puerto Rico
  9. 1.9 12 km SSE of Indios, Puerto Rico
  10. 2.2 4 km SE of La Parguera, Puerto Rico
  11. 2.0 6 km SSE of Lares, Puerto Rico
  12. 1.8 3 km NNE of Lluveras, Puerto Rico
  13. 2.0 1 km S of Sabana Eneas, Puerto Rico
  14. 2.2 2 km S of Palmarejo, Puerto Rico
  15. 2.2 7 km SSW of Tallaboa, 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.