QuakeIndex

Earthquake · reviewed by a seismologist

M 2.9md

Puerto Rico region

· 11 km deep · released about 650 lb of TNT

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10 km30 km60 km120 km N Cabo Rojo Municipio 17 kmLajas Municipio 27 kmHormigueros Municipio 33 kmSan Germán Municipio 36 kmGuánica Municipio 38 kmSabana Grande Municipio 41 kmAñasco Municipio 48 kmMaricao Municipio 49 kmYauco Municipio 50 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
no reports yet
Nearest
Cabo Rojo Municipio, 17 km NE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1232 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

How big was it?

This earthquake released about 650 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 23,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 16,000× the energy of this one
  3. Around the size people start to feel M 3.0 1.5× the energy of this one
  4. This earthquake M 2.9 about 650 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 17.8732, -67.2702. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Cabo Rojo Municipio, PR 17 km (10 mi) SW of here earthquakes near Cabo Rojo Municipio
Lajas Municipio, PR 27 km (17 mi) WSW of here earthquakes near Lajas Municipio
Hormigueros Municipio, PR 33 km (21 mi) SSW of here earthquakes near Hormigueros Municipio
San Germán Municipio, PR 36 km (22 mi) SW of here earthquakes near San Germán Municipio
Guánica Municipio, PR 38 km (23 mi) WSW of here earthquakes near Guánica Municipio
Sabana Grande Municipio, PR 41 km (26 mi) SW of here earthquakes near Sabana Grande Municipio

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

Aftershocks so far

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

  1. 2.5 7 km WSW of Guánica, Puerto Rico
  2. 2.3 5 km W of Fuig, Puerto Rico
  3. 3.3 31 km WSW of Stella, Puerto Rico
  4. 2.5 20 km S of Guánica, Puerto Rico
  5. 2.2 5 km WSW of Gu?nica, Puerto Rico
  6. 2.1 5 km SSW of Indios, Puerto Rico
  7. 2.4 3 km WSW of Fuig, Puerto Rico
  8. 2.3 4 km WSW of Guánica, Puerto Rico
  9. 2.4 Puerto Rico region
  10. 2.4 4 km E of La Parguera, Puerto Rico
  11. 1.8 1 km NW of Sabana Grande, Puerto Rico
  12. 2.4 6 km SW of Guánica, Puerto Rico
  13. 2.4 Puerto Rico region
  14. 2.1 2 km WSW of Indios, Puerto Rico
  15. 2.3 Puerto Rico region

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 180,000 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.