QuakeIndex

Earthquake · reviewed by a seismologist

M 2.9md

5 km S of Jagual, Puerto Rico

· 70 km deep · released about 780 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N San Lorenzo Municipio 5 kmPatillas Municipio 12 kmCaguas Municipio 13 kmYabucoa Municipio 15 kmLas Piedras Municipio 16 kmJuncos Municipio 16 kmMaunabo Municipio 16 kmArroyo Municipio 16 kmCayey Municipio 17 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
70 km below the surface
Felt
no reports yet
Nearest
San Lorenzo Municipio, 5 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1258 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 780 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 19,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 14,000× the energy of this one
  3. Around the size people start to feel M 3.0 1.2× the energy of this one
  4. This earthquake M 2.9 about 780 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 18.1090, -65.9938. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
San Lorenzo Municipio, PR 5 km (3 mi) SSW of here earthquakes near San Lorenzo Municipio
Patillas Municipio, PR 12 km (8 mi) N of here earthquakes near Patillas Municipio
Caguas Municipio, PR 13 km (8 mi) SSE of here earthquakes near Caguas Municipio
Yabucoa Municipio, PR 15 km (9 mi) WNW of here earthquakes near Yabucoa Municipio
Las Piedras Municipio, PR 16 km (10 mi) SW of here earthquakes near Las Piedras Municipio
Juncos Municipio, PR 16 km (10 mi) SW of here earthquakes near Juncos Municipio

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

Aftershocks so far

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

  1. 2.7 1 km W of Juncos, Puerto Rico
  2. 3.0 Puerto Rico region
  3. 3.2 6 km N of San Juan, Puerto Rico
  4. 3.0 Puerto Rico region
  5. 2.6 6 km S of Emajagua, Puerto Rico
  6. 3.6 0 km ENE of Pájaros, Puerto Rico
  7. 2.9 8 km NNW of Coamo, Puerto Rico
  8. 3.0 1 km E of Jagual, Puerto Rico
  9. 2.4 8 km S of Orocovis, Puerto Rico
  10. 2.9 Puerto Rico region
  11. 3.3 8 km S of Orocovis, Puerto Rico
  12. 2.4 23 km SSE of Arroyo, Puerto Rico
  13. 2.7 2 km E of Santa Clara, Puerto Rico
  14. 3.0 1 km ENE of Bayamon, Puerto Rico
  15. 2.2 12 km SSE of Arroyo, 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 4.6 on 2016-12-05 — it released about 310 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.