QuakeIndex

Earthquake · reviewed by a seismologist

M 2.9md

86 km WSW of Pole Ojea, Puerto Rico

· 104 km deep · released about 720 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Mayagüez Municipio 37 kmCabo Rojo Municipio 88 kmHormigueros Municipio 100 kmRincón Municipio 100 kmLajas Municipio 102 kmSan Germán Municipio 106 kmAñasco Municipio 107 kmAguada Municipio 108 kmGuánica Municipio 113 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
104 km below the surface
Felt
no reports yet
Nearest
Mayagüez Municipio, 37 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3147 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 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 17.7621, -67.9743. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Mayagüez Municipio, PR 37 km (23 mi) SSW of here earthquakes near Mayagüez Municipio
Cabo Rojo Municipio, PR 88 km (55 mi) WSW of here earthquakes near Cabo Rojo Municipio
Hormigueros Municipio, PR 100 km (62 mi) WSW of here earthquakes near Hormigueros Municipio
Rincón Municipio, PR 100 km (62 mi) SW of here earthquakes near Rincón Municipio
Lajas Municipio, PR 102 km (63 mi) WSW of here earthquakes near Lajas Municipio
San Germán Municipio, PR 106 km (66 mi) WSW of here earthquakes near San Germán Municipio

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

Aftershocks so far

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

  1. 2.4 88 km SE of Boca de Yuma, Dominican Republic
  2. 3.1 53 km W of Puerto Real, Puerto Rico
  3. 2.4 62 km SE of Boca de Yuma, Dominican Republic
  4. 3.2 59 km SE of Boca de Yuma, Dominican Republic
  5. 2.6 60 km SE of Boca de Yuma, Dominican Republic
  6. 3.0 61 km SE of Boca de Yuma, Dominican Republic
  7. 4.0 62 km SE of Boca de Yuma, Dominican Republic
  8. 3.2 65 km SE of Punta Cana, Dominican Republic
  9. 3.2 66 km SE of Boca de Yuma, Dominican Republic
  10. 2.8 69 km WSW of Stella, Puerto Rico
  11. 3.2 51 km ESE of Boca de Yuma, Dominican Republic
  12. 3.2 60 km SE of Punta Cana, Dominican Republic
  13. 2.6 58 km SSE of Boca de Yuma, Dominican Republic
  14. 2.5 67 km SE of Boca de Yuma, Dominican Republic
  15. 3.1 59 km WSW of Stella, 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 4.3 on 2017-07-18 — it released about 120 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.