QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1md

16 km N of Quebradillas, Puerto Rico

· 12 km deep · released about 47 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Quebradillas Municipio 18 kmIsabela Municipio 18 kmCamuy Municipio 21 kmHatillo Municipio 24 kmAguadilla Municipio 28 kmMoca Municipio 32 kmSan Sebastián Municipio 33 kmArecibo Municipio 34 kmLares Municipio 39 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 2.1 (md)
Depth
12 km below the surface
Felt
no reports yet
Nearest
Quebradillas Municipio, 18 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3019 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 47 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.1 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 320,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 230,000× the energy of this one
  3. Around the size people start to feel M 3.0 20× the energy of this one
  4. This earthquake M 2.1 about 47 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 18.6250, -66.9225. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Quebradillas Municipio, PR 18 km (11 mi) N of here earthquakes near Quebradillas Municipio
Isabela Municipio, PR 18 km (11 mi) NNE of here earthquakes near Isabela Municipio
Camuy Municipio, PR 21 km (13 mi) NNW of here earthquakes near Camuy Municipio
Hatillo Municipio, PR 24 km (15 mi) NNW of here earthquakes near Hatillo Municipio
Aguadilla Municipio, PR 28 km (18 mi) NE of here earthquakes near Aguadilla Municipio
Moca Municipio, PR 32 km (20 mi) NNE of here earthquakes near Moca Municipio

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

Aftershocks so far

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

  1. 2.4 2 km ENE of Isabela, Puerto Rico
  2. 2.6 3 km NE of Quebradillas, Puerto Rico
  3. 2.5 41 km N of Isabela, Puerto Rico
  4. 2.0 4 km SSW of Añasco, Puerto Rico
  5. 1.9 6 km W of Las Marías, Puerto Rico
  6. 2.3 20 km N of Garrochales, Puerto Rico
  7. 2.6 35 km NNW of San Antonio, Puerto Rico
  8. 2.1 11 km SSE of Lares, Puerto Rico
  9. 2.0 9 km N of Animas, Puerto Rico
  10. 2.2 1 km W of Rafael Gonzalez, Puerto Rico
  11. 2.9 36 km N of Tierras Nuevas Poniente, Puerto Rico
  12. 2.8 57 km N of Isabela, Puerto Rico
  13. 2.4 18 km N of San Antonio, Puerto Rico
  14. 2.7 57 km N of Hatillo, Puerto Rico
  15. 2.7 6 km E of Espino, 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 4.0 on 2017-03-24 — it released about 640 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.