QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9md

2 km N of Juncal, Puerto Rico

· 21 km deep · released about 20 lb of TNT

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10 km30 km60 km120 km N San Sebastián Municipio 5 kmLares Municipio 9 kmCamuy Municipio 13 kmLas Marías Municipio 14 kmQuebradillas Municipio 14 kmHatillo Municipio 17 kmMoca Municipio 17 kmMaricao Municipio 19 kmIsabela Municipio 19 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
21 km below the surface
Felt
no reports yet
Nearest
San Sebastián Municipio, 5 km W
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3268 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 20 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 5.8 760,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 540,000× the energy of this one
  3. Around the size people start to feel M 3.0 48× the energy of this one
  4. This earthquake M 1.9 about 20 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 18.3401, -66.9188. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
San Sebastián Municipio, PR 5 km (3 mi) E of here earthquakes near San Sebastián Municipio
Lares Municipio, PR 9 km (5 mi) NW of here earthquakes near Lares Municipio
Camuy Municipio, PR 13 km (8 mi) SSW of here earthquakes near Camuy Municipio
Las Marías Municipio, PR 14 km (9 mi) NNE of here earthquakes near Las Marías Municipio
Quebradillas Municipio, PR 14 km (9 mi) S of here earthquakes near Quebradillas Municipio
Hatillo Municipio, PR 17 km (11 mi) SW of here earthquakes near Hatillo Municipio

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

Aftershocks so far

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

  1. 1.6 0 km SE of Fuig, Puerto Rico
  2. 2.0 15 km SSW of Stella, Puerto Rico
  3. 2.7 11 km E of Maricao, Puerto Rico
  4. 1.7 2 km SE of Maria Antonia, Puerto Rico
  5. 2.3 3 km WNW of Santo Domingo, Puerto Rico
  6. 2.7 19 km NW of San Antonio, Puerto Rico
  7. 2.5 11 km WNW of Puerto Real, Puerto Rico
  8. 2.2 5 km NNW of Puerto Real, Puerto Rico
  9. 2.0 4 km W of Las Marías, Puerto Rico
  10. 2.1 4 km ESE of Las Marías, Puerto Rico
  11. 1.8 2 km SSW of Palmarejo, Puerto Rico
  12. 3.1 4 km NNE of Hatillo, Puerto Rico
  13. 2.7 6 km SE of Espino, Puerto Rico
  14. 2.0 1 km WNW of Lluveras, Puerto Rico
  15. 2.1 5 km WSW of Rincón, 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.