QuakeIndex

Earthquake · reviewed by a seismologist

M 2.9md

4 km SW of La Parguera, Puerto Rico

· 11 km deep · released about 720 lb of TNT

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10 km30 km60 km120 km N Lajas Municipio 6 kmCabo Rojo Municipio 12 kmGuánica Municipio 17 kmSan Germán Municipio 19 kmSabana Grande Municipio 21 kmHormigueros Municipio 21 kmYauco Municipio 28 kmMaricao Municipio 30 kmGuayanilla Municipio 31 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
11 km below the surface
Felt
2 reports · strongest reported intensity II
Nearest
Lajas Municipio, 6 km NE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2199 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 2 people have reported feeling it to USGS.

How big was it?

This earthquake released about 720 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 21,000× 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 1.3× the energy of this one
  4. This earthquake M 2.9 about 720 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 17.9473, -67.0838. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Lajas Municipio, PR 6 km (4 mi) SW of here earthquakes near Lajas Municipio
Cabo Rojo Municipio, PR 12 km (7 mi) ESE of here earthquakes near Cabo Rojo Municipio
Guánica Municipio, PR 17 km (11 mi) W of here earthquakes near Guánica Municipio
San Germán Municipio, PR 19 km (12 mi) SSW of here earthquakes near San Germán Municipio
Sabana Grande Municipio, PR 21 km (13 mi) SW of here earthquakes near Sabana Grande Municipio
Hormigueros Municipio, PR 21 km (13 mi) S of here earthquakes near Hormigueros 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. 2.4 3 km SSE of Maria Antonia, Puerto Rico
  2. 2.3 6 km E of La Parguera, Puerto Rico
  3. 2.5 5 km S of Guánica, Puerto Rico
  4. 2.6 6 km SSE of Guánica, Puerto Rico
  5. 2.9 7 km SSW of Tallaboa, Puerto Rico
  6. 2.8 6 km SW of Guánica, Puerto Rico
  7. 2.8 5 km WSW of Guánica, Puerto Rico
  8. 3.0 7 km WSW of Guánica, Puerto Rico
  9. 3.3 6 km WSW of Guánica, Puerto Rico
  10. 2.9 6 km WSW of Guánica, Puerto Rico
  11. 2.6 6 km WSW of Guánica, Puerto Rico
  12. 2.3 4 km SSW of Indios, Puerto Rico
  13. 2.8 7 km SE of Indios, Puerto Rico
  14. 2.7 4 km SW of Guánica, Puerto Rico
  15. 2.6 4 km SW 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.