QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9md

8 km NW of Santo Domingo, Puerto Rico

· 8.0 km deep · released about 25 lb of TNT

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10 km30 km60 km120 km N Yauco Municipio 7 kmAdjuntas Municipio 8 kmGuayanilla Municipio 13 kmPeñuelas Municipio 14 kmMaricao Municipio 15 kmSabana Grande Municipio 16 kmLares Municipio 18 kmUtuado Municipio 20 kmLas Marías Municipio 21 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
8.0 km below the surface
Felt
no reports yet
Nearest
Yauco Municipio, 7 km SW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2926 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 25 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.0 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 600,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 420,000× the energy of this one
  3. Around the size people start to feel M 3.0 38× the energy of this one
  4. This earthquake M 1.9 about 25 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 18.1236, -66.8066. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Yauco Municipio, PR 7 km (4 mi) NE of here earthquakes near Yauco Municipio
Adjuntas Municipio, PR 8 km (5 mi) SW of here earthquakes near Adjuntas Municipio
Guayanilla Municipio, PR 13 km (8 mi) N of here earthquakes near Guayanilla Municipio
Peñuelas Municipio, PR 14 km (8 mi) NW of here earthquakes near Peñuelas Municipio
Maricao Municipio, PR 15 km (9 mi) ESE of here earthquakes near Maricao Municipio
Sabana Grande Municipio, PR 16 km (10 mi) ENE 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

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

  1. 1.6 12 km NE of Sabana Grande, Puerto Rico
  2. 1.8 6 km W of Hormigueros, Puerto Rico
  3. 2.2 11 km SSE of Tallaboa, Puerto Rico
  4. 1.9 6 km SSE of Ponce, Puerto Rico
  5. 2.5 3 km N of Sabana Eneas, Puerto Rico
  6. 1.6 1 km SE of Palmarejo, Puerto Rico
  7. 2.1 1 km N of Fuig, Puerto Rico
  8. 2.1 1 km E of Fuig, Puerto Rico
  9. 1.9 3 km SE of Maria Antonia, Puerto Rico
  10. 2.3 9 km SE of La Parguera, Puerto Rico
  11. 1.8 13 km SSE of La Parguera, Puerto Rico
  12. 2.4 2 km NNE of Mayagüez, Puerto Rico
  13. 2.2 2 km NW of Moca, Puerto Rico
  14. 2.6 13 km SSW of Guánica, Puerto Rico
  15. 2.7 5 km WSW of Mayagüez, 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.