QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6Md

91 km NNE of Luquillo, Puerto Rico

· 31 km deep · released about 7.6 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Fajardo Municipio 86 kmCulebra Municipio 90 kmLuquillo Municipio 92 kmRío Grande Municipio 95 kmLoíza Municipio 96 kmCeiba Municipio 101 kmCarolina Municipio 102 kmCanóvanas Municipio 104 kmSan Juan Municipio 107 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
31 km below the surface
Felt
no reports yet
Nearest
Fajardo Municipio, 86 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3570 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 19.1343, -65.3868. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Fajardo Municipio, PR 86 km (53 mi) NNE of here earthquakes near Fajardo Municipio
Culebra Municipio, PR 90 km (56 mi) N of here earthquakes near Culebra Municipio
Luquillo Municipio, PR 92 km (57 mi) NNE of here earthquakes near Luquillo Municipio
Río Grande Municipio, PR 95 km (59 mi) NNE of here earthquakes near Río Grande Municipio
Loíza Municipio, PR 96 km (60 mi) NE of here earthquakes near Loíza Municipio
Ceiba Municipio, PR 101 km (63 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

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

  1. 2.5 61 km N of Charlotte Amalie, U.S. Virgin Islands
  2. 2.9 79 km NNW of Charlotte Amalie, U.S. Virgin Islands
  3. 2.7 69 km NNE of Luquillo, Puerto Rico
  4. 3.0 50 km NNE of Luquillo, Puerto Rico
  5. 2.8 59 km NNE of Luquillo, Puerto Rico
  6. 3.3 105 km N of Charlotte Amalie, U.S. Virgin Islands
  7. 3.2 96 km NNW of Charlotte Amalie, U.S. Virgin Islands
  8. 3.1 104 km N of Charlotte Amalie, U.S. Virgin Islands
  9. 2.8 117 km N of Charlotte Amalie, U.S. Virgin Islands
  10. 3.2 53 km NNE of Vieques, Puerto Rico
  11. 3.1 98 km NNE of Vieques, Puerto Rico
  12. 2.5 75 km NNE of Vieques, Puerto Rico
  13. 3.4 138 km NNW of Charlotte Amalie, U.S. Virgin Islands
  14. 3.4 102 km N of Culebra, Puerto Rico
  15. 3.4 122 km N of Charlotte Amalie, U.S. Virgin Islands

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.