QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9md

4 km SE of Jagual, Puerto Rico

· 22 km deep · released about 19 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N San Lorenzo Municipio 2 kmJuncos Municipio 12 kmLas Piedras Municipio 12 kmCaguas Municipio 12 kmYabucoa Municipio 14 kmGurabo Municipio 15 kmPatillas Municipio 15 kmMaunabo Municipio 17 kmHumacao Municipio 19 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 1.9 (md)
Depth
22 km below the surface
Felt
no reports yet
Nearest
San Lorenzo Municipio, 2 km NW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 242 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

How big was it?

This earthquake released about 19 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 790,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 560,000× the energy of this one
  3. Around the size people start to feel M 3.0 50× the energy of this one
  4. This earthquake M 1.9 about 19 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 18.1363, -65.9663. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
San Lorenzo Municipio, PR 2 km (1 mi) SE of here earthquakes near San Lorenzo Municipio
Juncos Municipio, PR 12 km (7 mi) SSW of here earthquakes near Juncos Municipio
Las Piedras Municipio, PR 12 km (7 mi) WSW of here earthquakes near Las Piedras Municipio
Caguas Municipio, PR 12 km (8 mi) SE of here earthquakes near Caguas Municipio
Yabucoa Municipio, PR 14 km (9 mi) NW of here earthquakes near Yabucoa Municipio
Gurabo Municipio, PR 15 km (9 mi) S of here earthquakes near Gurabo Municipio

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

Aftershocks so far

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

  1. 2.1 7 km WSW of Naranjito, Puerto Rico
  2. 2.7 21 km SSE of Emajagua, Puerto Rico
  3. 2.1 8 km SE of Emajagua, Puerto Rico
  4. 2.9 17 km SW of Esperanza, Puerto Rico
  5. 2.0 6 km S of G. L. Garcia, Puerto Rico
  6. 2.0 2 km ENE of Aguas Buenas, Puerto Rico
  7. 2.9 28 km SE of El Negro, Puerto Rico
  8. 3.0 27 km SW of Esperanza, Puerto Rico
  9. 1.8 6 km SSE of Arroyo, Puerto Rico
  10. 2.6 26 km SE of El Negro, Puerto Rico
  11. 1.9 2 km N of Santa Isabel, Puerto Rico
  12. 1.9 1 km SSW of Candelaria Arenas, Puerto Rico
  13. 3.1 3 km ESE of San Juan, Puerto Rico
  14. 2.5 5 km N of Coamo, Puerto Rico
  15. 2.2 6 km SSE of Salinas, 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 12,000 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.