QuakeIndex

Earthquake · reviewed by a seismologist

M 2.9md

3 km SW of Stella, Puerto Rico

· 83 km deep · released about 590 lb of TNT

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10 km30 km60 km120 km N Rincón Municipio 4 kmAguada Municipio 12 kmAñasco Municipio 14 kmMoca Municipio 21 kmAguadilla Municipio 24 kmHormigueros Municipio 24 kmSan Sebastián Municipio 32 kmLas Marías Municipio 32 kmSan Germán Municipio 32 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
83 km below the surface
Felt
no reports yet
Nearest
Rincón Municipio, 4 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2136 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 590 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 26,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 18,000× the energy of this one
  3. Around the size people start to feel M 3.0 1.6× the energy of this one
  4. This earthquake M 2.9 about 590 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 18.3016, -67.2661. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Rincón Municipio, PR 4 km (3 mi) SSW of here earthquakes near Rincón Municipio
Aguada Municipio, PR 12 km (7 mi) SW of here earthquakes near Aguada Municipio
Añasco Municipio, PR 14 km (9 mi) W of here earthquakes near Añasco Municipio
Moca Municipio, PR 21 km (13 mi) WSW of here earthquakes near Moca Municipio
Aguadilla Municipio, PR 24 km (15 mi) SSW of here earthquakes near Aguadilla Municipio
Hormigueros Municipio, PR 24 km (15 mi) NW of here earthquakes near Hormigueros Municipio

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

Aftershocks so far

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

  1. 2.2 7 km ESE of La Parguera, Puerto Rico
  2. 2.1 5 km ESE of Pole Ojea, Puerto Rico
  3. 1.6 4 km ESE of La Parguera, Puerto Rico
  4. 2.3 7 km ESE of La Parguera, Puerto Rico
  5. 2.3 1 km WNW of Fuig, Puerto Rico
  6. 1.8 4 km ENE of La Parguera, Puerto Rico
  7. 2.2 4 km SSW of La Parguera, Puerto Rico
  8. 2.1 7 km WSW of La Parguera, Puerto Rico
  9. 2.2 6 km WSW of Fuig, Puerto Rico
  10. 2.8 6 km WSW of La Parguera, Puerto Rico
  11. 3.3 11 km NNE of Quebradillas, 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 4.9 on 2020-07-03 — it released about 1,100 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.