QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9Md

4 km SE of Maricao, Puerto Rico

· 20 km deep · released about 21 lb of TNT

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10 km30 km60 km120 km N Maricao Municipio 2 kmSabana Grande Municipio 8 kmLas Marías Municipio 9 kmSan Germán Municipio 11 kmYauco Municipio 12 kmLares Municipio 15 kmHormigueros Municipio 18 kmSan Sebastián Municipio 20 kmAdjuntas Municipio 20 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
20 km below the surface
Felt
no reports yet
Nearest
Maricao Municipio, 2 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3627 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 21 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 5.8 710,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 500,000× the energy of this one
  3. Around the size people start to feel M 3.0 45× the energy of this one
  4. This earthquake M 1.9 about 21 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 18.1569, -66.9440. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Maricao Municipio, PR 2 km (1 mi) SSW of here earthquakes near Maricao Municipio
Sabana Grande Municipio, PR 8 km (5 mi) N of here earthquakes near Sabana Grande Municipio
Las Marías Municipio, PR 9 km (5 mi) SSE of here earthquakes near Las Marías Municipio
San Germán Municipio, PR 11 km (7 mi) ENE of here earthquakes near San Germán Municipio
Yauco Municipio, PR 12 km (7 mi) NW of here earthquakes near Yauco Municipio
Lares Municipio, PR 15 km (10 mi) SSW of here earthquakes near Lares 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. 1.7 14 km W of Puerto Real, Puerto Rico
  2. 2.3 9 km WSW of Puerto Real, Puerto Rico
  3. 2.0 6 km SSW of Tallaboa, Puerto Rico
  4. 2.2 3 km NW of Hormigueros, Puerto Rico
  5. 2.4 13 km SSW of Guánica, Puerto Rico
  6. 2.9 6 km SSW of La Playa, Puerto Rico
  7. 2.8 6 km SSW of La Playa, Puerto Rico
  8. 1.6 3 km W of Liborio Negron Torres, Puerto Rico
  9. 2.2 Mona Passage
  10. 1.7 6 km ENE of Hormigueros, Puerto Rico
  11. 2.1 9 km SE of Pole Ojea, Puerto Rico
  12. 2.1 5 km WSW of La Parguera, Puerto Rico
  13. 2.6 17 km S of Tallaboa, Puerto Rico
  14. 2.1 1 km SSE of Ponce, Puerto Rico
  15. 2.8 1 km S of Ponce, 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

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