QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9md

5 km ENE of G. L. Garcia, Puerto Rico

· 13 km deep · released about 19 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Caguas Municipio 7 kmSan Lorenzo Municipio 9 kmCayey Municipio 11 kmCidra Municipio 11 kmAguas Buenas Municipio 14 kmGurabo Municipio 16 kmJuncos Municipio 18 kmPatillas Municipio 18 kmComerío 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
13 km below the surface
Felt
no reports yet
Nearest
Caguas Municipio, 7 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3027 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 5.8 810,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 580,000× the energy of this one
  3. Around the size people start to feel M 3.0 51× 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 18.1476, -66.0583. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Caguas Municipio, PR 7 km (4 mi) S of here earthquakes near Caguas Municipio
San Lorenzo Municipio, PR 9 km (5 mi) W of here earthquakes near San Lorenzo Municipio
Cayey Municipio, PR 11 km (7 mi) ENE of here earthquakes near Cayey Municipio
Cidra Municipio, PR 11 km (7 mi) ESE of here earthquakes near Cidra Municipio
Aguas Buenas Municipio, PR 14 km (9 mi) SSE of here earthquakes near Aguas Buenas Municipio
Gurabo Municipio, PR 16 km (10 mi) SSW of here earthquakes near Gurabo Municipio

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

Aftershocks so far

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

  1. 1.9 5 km SW of Playita Cortada, Puerto Rico
  2. 2.8 1 km NW of Naranjito, Puerto Rico
  3. 2.5 2 km ESE of Vega Alta, Puerto Rico
  4. 1.7 8 km S of Villalba, Puerto Rico
  5. 3.0 4 km ESE of Bayamon, Puerto Rico
  6. 2.6 3 km SSE of Guaynabo, Puerto Rico
  7. 2.3 9 km SSW of Emajagua, Puerto Rico
  8. 2.0 11 km S of Emajagua, Puerto Rico
  9. 2.5 10 km SSW of Emajagua, Puerto Rico
  10. 2.8 3 km NNE of Naranjito, Puerto Rico
  11. 2.0 1 km NE of Sabana Seca, Puerto Rico
  12. 2.9 5 km SE of Cataño, Puerto Rico
  13. 2.1 7 km E of Naranjito, Puerto Rico
  14. 1.5 2 km N of Coquí, Puerto Rico
  15. 2.2 2 km NNE of Coquí, 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 13,000 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.