QuakeIndex

Earthquake · reviewed by a seismologist

M 1.5md

2 km NW of Las Marias, Puerto Rico

· 17 km deep · released about 6.2 lb of TNT

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10 km30 km60 km120 km N Añasco Municipio 4 kmAguada Municipio 8 kmRincón Municipio 10 kmMoca Municipio 11 kmAguadilla Municipio 19 kmHormigueros Municipio 20 kmSan Sebastián Municipio 20 kmLas Marías Municipio 21 kmIsabela Municipio 25 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 1.5 (md)
Depth
17 km below the surface
Felt
no reports yet
Nearest
Añasco Municipio, 4 km SE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 809 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 6.2 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,500,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,700,000× the energy of this one
  3. Around the size people start to feel M 3.0 150× the energy of this one
  4. This earthquake M 1.5 about 6.2 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 18.3087, -67.1598. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Añasco Municipio, PR 4 km (2 mi) NW of here earthquakes near Añasco Municipio
Aguada Municipio, PR 8 km (5 mi) SSE of here earthquakes near Aguada Municipio
Rincón Municipio, PR 10 km (6 mi) ESE of here earthquakes near Rincón Municipio
Moca Municipio, PR 11 km (7 mi) SW of here earthquakes near Moca Municipio
Aguadilla Municipio, PR 19 km (12 mi) S of here earthquakes near Aguadilla Municipio
Hormigueros Municipio, PR 20 km (12 mi) NNW of here earthquakes near Hormigueros Municipio

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

Aftershocks so far

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

  1. 2.3 2 km W of Santo Domingo, Puerto Rico
  2. 3.2 37 km WNW of Rincón, Puerto Rico
  3. 2.4 1 km N of Indios, Puerto Rico
  4. 1.9 5 km SW of Guánica, Puerto Rico
  5. 2.4 1 km WSW of Indios, Puerto Rico
  6. 2.9 19 km SW of Stella, Puerto Rico
  7. 2.4 6 km ENE of La Parguera, Puerto Rico
  8. 3.5 6 km ENE of La Parguera, Puerto Rico
  9. 2.4 1 km SSW of Palmarejo, Puerto Rico
  10. 3.7 5 km ENE of La Parguera, Puerto Rico
  11. 2.0 2 km E of Yauco, Puerto Rico
  12. 2.4 3 km SSE of Lajas, Puerto Rico
  13. 2.9 2 km WSW of Indios, Puerto Rico
  14. 2.6 7 km WSW of Guánica, Puerto Rico
  15. 2.3 3 km SSE of Maria Antonia, 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.

For this area

The largest earthquake within 50 km in our catalogue was M 5.3 on 2020-07-03 — it released about 440,000 times the energy of this one.

From the QuakeIndex catalogue, built from the USGS FDSN event service.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.