QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9md

0 km ESE of Vázquez, Puerto Rico

· 10 km deep · released about 18 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Aibonito Municipio 8 kmCayey Municipio 9 kmSalinas Municipio 11 kmGuayama Municipio 14 kmCoamo Municipio 14 kmCidra Municipio 14 kmBarranquitas Municipio 17 kmComerío Municipio 18 kmSanta Isabel Municipio 21 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
10 km below the surface
Felt
no reports yet
Nearest
Aibonito Municipio, 8 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 438 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 18 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 5.8 840,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 600,000× the energy of this one
  3. Around the size people start to feel M 3.0 53× the energy of this one
  4. This earthquake M 1.9 about 18 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 18.0632, -66.2305. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Aibonito Municipio, PR 8 km (5 mi) SSE of here earthquakes near Aibonito Municipio
Cayey Municipio, PR 9 km (6 mi) WSW of here earthquakes near Cayey Municipio
Salinas Municipio, PR 11 km (7 mi) NNE of here earthquakes near Salinas Municipio
Guayama Municipio, PR 14 km (9 mi) NW of here earthquakes near Guayama Municipio
Coamo Municipio, PR 14 km (9 mi) ESE of here earthquakes near Coamo Municipio
Cidra Municipio, PR 14 km (9 mi) SSW of here earthquakes near Cidra Municipio

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

Aftershocks so far

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

  1. 3.0 3 km SW of Vega Alta, Puerto Rico
  2. 2.4 4 km NW of Orocovis, Puerto Rico
  3. 2.3 4 km WNW of Orocovis, Puerto Rico
  4. 2.3 10 km SSE of Tallaboa, Puerto Rico
  5. 2.5 6 km WNW of Aguas Buenas, Puerto Rico
  6. 2.5 3 km S of Salinas, Puerto Rico
  7. 2.1 4 km WNW of Orocovis, Puerto Rico
  8. 2.1 6 km NW of Coto Laurel, Puerto Rico
  9. 3.1 5 km N of Ponce, Puerto Rico
  10. 2.7 3 km SSE of San Lorenzo, Puerto Rico
  11. 2.1 36 km SSW of Central Aguirre, Puerto Rico
  12. 2.4 4 km S of Salinas, Puerto Rico
  13. 3.0 1 km SE of Coto Norte, Puerto Rico
  14. 2.2 3 km SSE of G. L. Garcia, Puerto Rico
  15. 2.1 15 km SSW of Potala Pastillo, 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 5.0 on 2020-01-07 — it released about 53,000 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.