QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9md

15 km S of Indios, Puerto Rico

· 5.0 km deep · released about 18 lb of TNT

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10 km30 km60 km120 km N Guayanilla Municipio 16 kmGuánica Municipio 17 kmPeñuelas Municipio 20 kmPonce Municipio 25 kmYauco Municipio 26 kmLajas Municipio 29 kmSabana Grande Municipio 30 kmJuana Díaz Municipio 35 kmAdjuntas Municipio 36 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
5.0 km below the surface
Felt
no reports yet
Nearest
Guayanilla Municipio, 16 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2414 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 18 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 5.8 840,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 600,000× the energy of this one
  3. Around the size people start to feel M 3.0 53× the energy of this one
  4. This earthquake M 1.9 about 18 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 17.8598, -66.7925. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Guayanilla Municipio, PR 16 km (10 mi) S of here earthquakes near Guayanilla Municipio
Guánica Municipio, PR 17 km (11 mi) SE of here earthquakes near Guánica Municipio
Peñuelas Municipio, PR 20 km (12 mi) SSW of here earthquakes near Peñuelas Municipio
Ponce Municipio, PR 25 km (16 mi) SW of here earthquakes near Ponce Municipio
Yauco Municipio, PR 26 km (16 mi) SSE of here earthquakes near Yauco Municipio
Lajas Municipio, PR 29 km (18 mi) ESE of here earthquakes near Lajas 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. 1.9 4 km SSW of Indios, Puerto Rico
  2. 1.8 1 km SE of Guánica, Puerto Rico
  3. 2.5 13 km S of Indios, Puerto Rico
  4. 2.3 0 km SSW of Guánica, Puerto Rico
  5. 2.1 7 km S of Indios, Puerto Rico
  6. 3.0 8 km S of Indios, Puerto Rico
  7. 2.2 17 km SSE of Indios, Puerto Rico
  8. 2.5 7 km S of Guánica, Puerto Rico
  9. 2.9 12 km S of Indios, Puerto Rico
  10. 1.7 2 km SSW of Guánica, Puerto Rico
  11. 2.1 11 km SSE of Indios, Puerto Rico
  12. 2.1 8 km S of Indios, Puerto Rico
  13. 2.2 8 km S of Indios, Puerto Rico
  14. 1.9 4 km ESE of Indios, Puerto Rico
  15. 1.8 0 km WNW 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 5.0 on 2019-12-29 — it released about 53,000 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.