QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7md

6 km W of Maricao, Puerto Rico

· 14 km deep · released about 12 lb of TNT

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10 km30 km60 km120 km N San Germán Municipio 8 kmLas Marías Municipio 9 kmHormigueros Municipio 9 kmMaricao Municipio 11 kmSabana Grande Municipio 15 kmAñasco Municipio 15 kmSan Sebastián Municipio 18 kmLares Municipio 21 kmMoca Municipio 22 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 1.7 (md)
Depth
14 km below the surface
Felt
no reports yet
Nearest
San Germán Municipio, 8 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1909 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 12 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,200,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 870,000× the energy of this one
  3. Around the size people start to feel M 3.0 78× the energy of this one
  4. This earthquake M 1.7 about 12 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 18.1808, -67.0438. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
San Germán Municipio, PR 8 km (5 mi) N of here earthquakes near San Germán Municipio
Las Marías Municipio, PR 9 km (5 mi) SW of here earthquakes near Las Marías Municipio
Hormigueros Municipio, PR 9 km (6 mi) NE of here earthquakes near Hormigueros Municipio
Maricao Municipio, PR 11 km (7 mi) W of here earthquakes near Maricao Municipio
Sabana Grande Municipio, PR 15 km (9 mi) NW of here earthquakes near Sabana Grande Municipio
Añasco Municipio, PR 15 km (9 mi) SE of here earthquakes near Añasco Municipio

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

Aftershocks so far

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

  1. 1.8 2 km ESE of Maricao, Puerto Rico
  2. 2.0 4 km WSW of Palmarejo, Puerto Rico
  3. 1.7 6 km ESE of La Parguera, Puerto Rico
  4. 1.9 4 km ESE of La Parguera, Puerto Rico
  5. 2.9 8 km SW of Guánica, Puerto Rico
  6. 1.5 5 km WSW of Guánica, Puerto Rico
  7. 2.0 1 km NNW of Guayanilla, Puerto Rico
  8. 1.6 2 km SSW of Guánica, Puerto Rico
  9. 2.0 2 km ESE of Palomas, Puerto Rico
  10. 1.6 7 km ESE of La Parguera, Puerto Rico
  11. 1.8 2 km SW of Guánica, Puerto Rico
  12. 1.7 5 km ENE of La Parguera, Puerto Rico
  13. 2.5 14 km SSE of Guánica, Puerto Rico
  14. 2.3 5 km SE of Maria Antonia, Puerto Rico
  15. 1.6 2 km NW of Lluveras, 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 6.4 on 2020-01-07 — it released about 9,800,000 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.