QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9md

Puerto Rico region

· 12 km deep · released about 22 lb of TNT

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10 km30 km60 km120 km N Maricao Municipio 6 kmSan Germán Municipio 7 kmLas Marías Municipio 8 kmSabana Grande Municipio 9 kmHormigueros Municipio 14 kmYauco Municipio 16 kmLares Municipio 18 kmSan Sebastián Municipio 20 kmLajas 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
12 km below the surface
Felt
no reports yet
Nearest
Maricao Municipio, 6 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3056 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 22 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 5.8 680,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 480,000× the energy of this one
  3. Around the size people start to feel M 3.0 43× the energy of this one
  4. This earthquake M 1.9 about 22 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 18.1546, -66.9873. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Maricao Municipio, PR 6 km (4 mi) WSW of here earthquakes near Maricao Municipio
San Germán Municipio, PR 7 km (5 mi) NE of here earthquakes near San Germán Municipio
Las Marías Municipio, PR 8 km (5 mi) S of here earthquakes near Las Marías Municipio
Sabana Grande Municipio, PR 9 km (6 mi) NNW of here earthquakes near Sabana Grande Municipio
Hormigueros Municipio, PR 14 km (9 mi) E of here earthquakes near Hormigueros Municipio
Yauco Municipio, PR 16 km (10 mi) WNW of here earthquakes near Yauco Municipio

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

Aftershocks so far

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

  1. 2.0 7 km NW of Puerto Real, Puerto Rico
  2. 2.9 9 km NW of Caban, Puerto Rico
  3. 2.3 6 km WNW of Rincón, Puerto Rico
  4. 2.0 17 km WSW of Pole Ojea, Puerto Rico
  5. 1.7 11 km S of Pole Ojea, Puerto Rico
  6. 2.3 5 km NNW of Rincón, Puerto Rico
  7. 1.6 2 km SSW of Sabana Eneas, Puerto Rico
  8. 2.3 3 km SE of Magas Arriba, Puerto Rico
  9. 1.7 8 km NW of Santo Domingo, Puerto Rico
  10. 2.7 21 km WSW of Stella, Puerto Rico
  11. 3.0 2 km WSW of Stella, Puerto Rico
  12. 2.6 11 km W of Pole Ojea, Puerto Rico
  13. 2.5 4 km NW of Rincón, Puerto Rico
  14. 1.6 4 km NE of Hormigueros, Puerto Rico
  15. 1.8 3 km WSW 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.