QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9md

11 km E of Maricao, Puerto Rico

· 23 km deep · released about 25 lb of TNT

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10 km30 km60 km120 km N Maricao Municipio 7 kmYauco Municipio 10 kmLares Municipio 11 kmAdjuntas Municipio 12 kmLas Marías Municipio 13 kmSabana Grande Municipio 13 kmSan Germán Municipio 19 kmGuayanilla Municipio 20 kmSan Sebastián 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
23 km below the surface
Felt
no reports yet
Nearest
Maricao Municipio, 7 km W
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2715 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 18.1753, -66.8678. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Maricao Municipio, PR 7 km (4 mi) E of here earthquakes near Maricao Municipio
Yauco Municipio, PR 10 km (6 mi) N of here earthquakes near Yauco Municipio
Lares Municipio, PR 11 km (7 mi) S of here earthquakes near Lares Municipio
Adjuntas Municipio, PR 12 km (7 mi) W of here earthquakes near Adjuntas Municipio
Las Marías Municipio, PR 13 km (8 mi) ESE of here earthquakes near Las Marías Municipio
Sabana Grande Municipio, PR 13 km (8 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

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

  1. 1.6 5 km S of Piedra Gorda, Puerto Rico
  2. 1.8 3 km N of Yauco, Puerto Rico
  3. 1.7 2 km E of Hormigueros, Puerto Rico
  4. 1.5 5 km SE of Adjuntas, Puerto Rico
  5. 2.4 8 km N of San Antonio, Puerto Rico
  6. 1.7 8 km W of Mayagüez, Puerto Rico
  7. 1.6 7 km NE of Sabana Grande, Puerto Rico
  8. 2.0 4 km SE of Maria Antonia, Puerto Rico
  9. 1.9 3 km S of Maricao, Puerto Rico
  10. 2.1 5 km WSW of Las Marías, Puerto Rico
  11. 2.4 12 km WNW of Pole Ojea, Puerto Rico
  12. 2.1 3 km S of La Playa, Puerto Rico
  13. 1.8 3 km SW of Maricao, Puerto Rico
  14. 2.9 8 km N of Arecibo, Puerto Rico
  15. 2.1 18 km S of Guánica, 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.