QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6Md

61 km NNE of Luquillo, Puerto Rico

· 14 km deep · released about 7.6 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Fajardo Municipio 56 kmLuquillo Municipio 62 kmCulebra Municipio 63 kmRío Grande Municipio 65 kmLoíza Municipio 69 kmCeiba Municipio 71 kmCarolina Municipio 74 kmCanóvanas Municipio 75 kmNaguabo Municipio 79 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 1.6 (Md)
Depth
14 km below the surface
Felt
no reports yet
Nearest
Fajardo Municipio, 56 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3609 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 7.6 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,000,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,400,000× the energy of this one
  3. Around the size people start to feel M 3.0 130× the energy of this one
  4. This earthquake M 1.6 about 7.6 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 18.8752, -65.4742. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Fajardo Municipio, PR 56 km (35 mi) NNE of here earthquakes near Fajardo Municipio
Luquillo Municipio, PR 62 km (38 mi) NNE of here earthquakes near Luquillo Municipio
Culebra Municipio, PR 63 km (39 mi) NNW of here earthquakes near Culebra Municipio
Río Grande Municipio, PR 65 km (40 mi) NNE of here earthquakes near Río Grande Municipio
Loíza Municipio, PR 69 km (43 mi) NE of here earthquakes near Loíza Municipio
Ceiba Municipio, PR 71 km (44 mi) NNE of here earthquakes near Ceiba Municipio

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

Aftershocks so far

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

  1. 3.2 59 km NNE of Culebra, Puerto Rico
  2. 3.2 74 km N of Charlotte Amalie, U.S. Virgin Islands
  3. 2.1 46 km NNE of Suárez, Puerto Rico
  4. 2.8 53 km N of Suárez, Puerto Rico
  5. 2.7 67 km NNW of Charlotte Amalie, U.S. Virgin Islands
  6. 3.2 71 km N of Culebra, Puerto Rico
  7. 3.2 40 km NNW of Charlotte Amalie, U.S. Virgin Islands
  8. 2.8 49 km N of Culebra, Puerto Rico
  9. 2.9 67 km N of Culebra, Puerto Rico
  10. 3.1 89 km N of Culebra, Puerto Rico
  11. 3.5 104 km NNE of Vieques, Puerto Rico
  12. 3.0 75 km N of Culebra, Puerto Rico
  13. 3.0 104 km N of Culebra, Puerto Rico
  14. 2.8 50 km N of Culebra, Puerto Rico
  15. 3.1 84 km N of Suárez, 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 4.3 on 2016-09-04 — 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.