QuakeIndex

Earthquake · reviewed by a seismologist

M 2.9md

6 km SSW of Guánica, Puerto Rico

· 12 km deep · released about 700 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Guánica Municipio 4 kmLajas Municipio 14 kmGuayanilla Municipio 16 kmSabana Grande Municipio 19 kmYauco Municipio 20 kmPeñuelas Municipio 24 kmSan Germán Municipio 25 kmMaricao Municipio 29 kmCabo Rojo Municipio 29 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 2.9 (md)
Depth
12 km below the surface
Felt
1 report · strongest reported intensity I
Nearest
Guánica Municipio, 4 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2207 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 1 person has reported feeling it to USGS.

How big was it?

This earthquake released about 700 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 22,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 15,000× the energy of this one
  3. Around the size people start to feel M 3.0 1.4× the energy of this one
  4. This earthquake M 2.9 about 700 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 17.9161, -66.9208. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Guánica Municipio, PR 4 km (2 mi) S of here earthquakes near Guánica Municipio
Lajas Municipio, PR 14 km (9 mi) ESE of here earthquakes near Lajas Municipio
Guayanilla Municipio, PR 16 km (10 mi) SW of here earthquakes near Guayanilla Municipio
Sabana Grande Municipio, PR 19 km (12 mi) S of here earthquakes near Sabana Grande Municipio
Yauco Municipio, PR 20 km (12 mi) SSW of here earthquakes near Yauco Municipio
Peñuelas Municipio, PR 24 km (15 mi) WSW of here earthquakes near Peñuelas Municipio

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

Aftershocks so far

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

  1. 3.0 5 km ESE of La Parguera, Puerto Rico
  2. 2.2 5 km SE of La Parguera, Puerto Rico
  3. 1.8 7 km ESE of La Parguera, Puerto Rico
  4. 2.6 Puerto Rico region
  5. 2.4 4 km ESE of La Parguera, Puerto Rico
  6. 2.6 6 km ESE of La Parguera, Puerto Rico
  7. 2.3 5 km SSE of La Parguera, Puerto Rico
  8. 2.8 3 km S of Guánica, Puerto Rico
  9. 2.3 7 km ESE of La Parguera, Puerto Rico
  10. 3.2 4 km ESE of La Parguera, Puerto Rico
  11. 4.9 5 km SE of La Parguera, Puerto Rico
  12. 2.3 18 km SSW of Guánica, Puerto Rico
  13. 2.5 5 km SW of Guánica, Puerto Rico
  14. 2.0 5 km WSW of Guánica, Puerto Rico
  15. 2.5 4 km WSW of Guánica, 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 170,000 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.