QuakeIndex

Earthquake · reviewed by a seismologist

M 2.0md

1 km SSE of Cidra, Puerto Rico

· 30 km deep · released about 31 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Cidra Municipio 1 kmCayey Municipio 7 kmComerío Municipio 10 kmAguas Buenas Municipio 11 kmAibonito Municipio 12 kmCaguas Municipio 12 kmBarranquitas Municipio 17 kmNaranjito Municipio 18 kmSan Lorenzo 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 2.0 (md)
Depth
30 km below the surface
Felt
no reports yet
Nearest
Cidra Municipio, 1 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 217 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 31 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.0 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 480,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 340,000× the energy of this one
  3. Around the size people start to feel M 3.0 31× the energy of this one
  4. This earthquake M 2.0 about 31 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 18.1630, -66.1550. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Cidra Municipio, PR 1 km (1 mi) SSE of here earthquakes near Cidra Municipio
Cayey Municipio, PR 7 km (4 mi) N of here earthquakes near Cayey Municipio
Comerío Municipio, PR 10 km (6 mi) SE of here earthquakes near Comerío Municipio
Aguas Buenas Municipio, PR 11 km (7 mi) SSW of here earthquakes near Aguas Buenas Municipio
Aibonito Municipio, PR 12 km (8 mi) ENE of here earthquakes near Aibonito Municipio
Caguas Municipio, PR 12 km (8 mi) WSW of here earthquakes near Caguas Municipio

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

Aftershocks so far

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

  1. 1.9 11 km S of Emajagua, Puerto Rico
  2. 2.0 5 km SSE of Salinas, Puerto Rico
  3. 2.4 7 km S of Salinas, Puerto Rico
  4. 2.7 15 km N of San Juan, Puerto Rico
  5. 2.4 4 km NNE of Ponce, Puerto Rico
  6. 2.1 7 km WSW of Naranjito, Puerto Rico
  7. 2.1 8 km SE of Emajagua, Puerto Rico
  8. 2.0 6 km S of G. L. Garcia, Puerto Rico
  9. 2.0 2 km ENE of Aguas Buenas, Puerto Rico
  10. 3.2 10 km NNE of Brenas, Puerto Rico
  11. 3.4 8 km NNE of Brenas, Puerto Rico
  12. 1.8 6 km SSE of Arroyo, Puerto Rico
  13. 1.9 2 km N of Santa Isabel, Puerto Rico
  14. 1.9 1 km SSW of Candelaria Arenas, Puerto Rico
  15. 2.3 0 km SSW of Santa Isabel, 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 7,700 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.