QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9md

3 km ENE of Bairoa, Puerto Rico

· 71 km deep · released about 21 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Gurabo Municipio 3 kmTrujillo Alto Municipio 7 kmCaguas Municipio 8 kmJuncos Municipio 11 kmAguas Buenas Municipio 13 kmSan Lorenzo Municipio 14 kmGuaynabo Municipio 14 kmCanóvanas Municipio 14 kmCarolina Municipio 15 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
71 km below the surface
Felt
no reports yet
Nearest
Gurabo Municipio, 3 km E
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2805 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 21 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 5.8 710,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 500,000× the energy of this one
  3. Around the size people start to feel M 3.0 45× the energy of this one
  4. This earthquake M 1.9 about 21 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 18.2688, -66.0063. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Gurabo Municipio, PR 3 km (2 mi) W of here earthquakes near Gurabo Municipio
Trujillo Alto Municipio, PR 7 km (5 mi) S of here earthquakes near Trujillo Alto Municipio
Caguas Municipio, PR 8 km (5 mi) NE of here earthquakes near Caguas Municipio
Juncos Municipio, PR 11 km (7 mi) WNW of here earthquakes near Juncos Municipio
Aguas Buenas Municipio, PR 13 km (8 mi) E of here earthquakes near Aguas Buenas Municipio
San Lorenzo Municipio, PR 14 km (9 mi) NNW of here earthquakes near San Lorenzo Municipio

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

Aftershocks so far

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

  1. 2.1 0 km NNW of Jobos, Puerto Rico
  2. 2.2 0 km NNE of Jobos, Puerto Rico
  3. 1.7 0 km NE of Jobos, Puerto Rico
  4. 2.6 2 km NNE of Jobos, Puerto Rico
  5. 2.2 1 km SSW of Jobos, Puerto Rico
  6. 2.0 Puerto Rico region
  7. 2.3 1 km SW of Jobos, Puerto Rico
  8. 1.8 0 km NE of Jobos, Puerto Rico
  9. 2.6 0 km ENE of Jobos, Puerto Rico
  10. 2.1 2 km N of Jobos, Puerto Rico
  11. 1.6 1 km ENE of Jobos, Puerto Rico
  12. 2.1 5 km N of Jobos, Puerto Rico
  13. 1.8 1 km SSW of Jobos, Puerto Rico
  14. 2.9 1 km E of Jobos, Puerto Rico
  15. 4.6 3 km SSW of Jobos, 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 11,000 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.