QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9md

10 km SSE of Lares, Puerto Rico

· 27 km deep · released about 23 lb of TNT

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10 km30 km60 km120 km N Lares Municipio 8 kmMaricao Municipio 9 kmAdjuntas Municipio 10 kmYauco Municipio 13 kmLas Marías Municipio 13 kmSabana Grande Municipio 17 kmUtuado Municipio 18 kmSan Sebastián Municipio 19 kmSan Germán 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 1.9 (md)
Depth
27 km below the surface
Felt
no reports yet
Nearest
Lares Municipio, 8 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3070 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 18.2051, -66.8536. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Lares Municipio, PR 8 km (5 mi) SSE of here earthquakes near Lares Municipio
Maricao Municipio, PR 9 km (6 mi) ENE of here earthquakes near Maricao Municipio
Adjuntas Municipio, PR 10 km (6 mi) WNW of here earthquakes near Adjuntas Municipio
Yauco Municipio, PR 13 km (8 mi) N of here earthquakes near Yauco Municipio
Las Marías Municipio, PR 13 km (8 mi) E of here earthquakes near Las Marías Municipio
Sabana Grande Municipio, PR 17 km (10 mi) NE 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

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

  1. 1.7 5 km WSW of Liborio Negron Torres, Puerto Rico
  2. 1.9 Mona Passage
  3. 1.6 8 km SSW of Guánica, Puerto Rico
  4. 2.4 12 km N of Arecibo, Puerto Rico
  5. 2.0 6 km ESE of Maricao, Puerto Rico
  6. 2.1 2 km NE of Lluveras, Puerto Rico
  7. 1.6 4 km WNW of Fuig, Puerto Rico
  8. 3.0 3 km SSW of Mayagüez, Puerto Rico
  9. 2.0 13 km N of Yauco, Puerto Rico
  10. 2.1 15 km SSE of Tallaboa, Puerto Rico
  11. 2.2 6 km S of Pole Ojea, Puerto Rico
  12. 1.5 3 km SSE of Palmarejo, Puerto Rico
  13. 2.0 11 km S of Pole Ojea, Puerto Rico
  14. 1.7 10 km SSE of La Parguera, Puerto Rico
  15. 1.6 0 km NNE of Boquerón, 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.