QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9md

2 km SE of Lajas, Puerto Rico

· 7.0 km deep · released about 23 lb of TNT

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10 km30 km60 km120 km N Lajas Municipio 6 kmSan Germán Municipio 8 kmSabana Grande Municipio 12 kmHormigueros Municipio 14 kmCabo Rojo Municipio 15 kmGuánica Municipio 16 kmMaricao Municipio 19 kmYauco Municipio 20 kmLas Marías Municipio 23 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
7.0 km below the surface
Felt
no reports yet
Nearest
Lajas Municipio, 6 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3346 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 18.0323, -67.0418. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Lajas Municipio, PR 6 km (4 mi) N of here earthquakes near Lajas Municipio
San Germán Municipio, PR 8 km (5 mi) S of here earthquakes near San Germán Municipio
Sabana Grande Municipio, PR 12 km (7 mi) WSW of here earthquakes near Sabana Grande Municipio
Hormigueros Municipio, PR 14 km (9 mi) SE of here earthquakes near Hormigueros Municipio
Cabo Rojo Municipio, PR 15 km (9 mi) ENE of here earthquakes near Cabo Rojo Municipio
Guánica Municipio, PR 16 km (10 mi) NW of here earthquakes near Guánica Municipio

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

Aftershocks so far

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

  1. 2.6 3 km SE of Magas Arriba, Puerto Rico
  2. 1.9 Mona Passage
  3. 2.0 2 km ESE of La Playa, Puerto Rico
  4. 2.5 2 km N of Tallaboa, Puerto Rico
  5. 2.2 11 km WNW of Puerto Real, Puerto Rico
  6. 2.1 4 km SW of Las Marías, Puerto Rico
  7. 2.6 4 km ENE of Mayagüez, Puerto Rico
  8. 2.1 9 km W of Puerto Real, Puerto Rico
  9. 2.4 7 km W of Mayagüez, Puerto Rico
  10. 2.1 2 km SW of Liborio Negron Torres, Puerto Rico
  11. 2.1 4 km NNW of Las Marías, Puerto Rico
  12. 2.3 1 km NW of Maria Antonia, Puerto Rico
  13. 2.2 4 km W of Las Marías, Puerto Rico
  14. 1.7 1 km SSW of Liborio Negron Torres, Puerto Rico
  15. 2.5 2 km SSW of Palmarejo, 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.