QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6Md

11 km E of El Negro, Puerto Rico

· 46 km deep · released about 7.6 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Humacao Municipio 11 kmYabucoa Municipio 13 kmMaunabo Municipio 17 kmNaguabo Municipio 19 kmLas Piedras Municipio 21 kmCeiba Municipio 26 kmPatillas Municipio 27 kmJuncos Municipio 27 kmSan Lorenzo Municipio 28 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
46 km below the surface
Felt
no reports yet
Nearest
Humacao Municipio, 11 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3607 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 18.0436, -65.7382. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Humacao Municipio, PR 11 km (7 mi) SSE of here earthquakes near Humacao Municipio
Yabucoa Municipio, PR 13 km (8 mi) E of here earthquakes near Yabucoa Municipio
Maunabo Municipio, PR 17 km (11 mi) ENE of here earthquakes near Maunabo Municipio
Naguabo Municipio, PR 19 km (12 mi) S of here earthquakes near Naguabo Municipio
Las Piedras Municipio, PR 21 km (13 mi) SE of here earthquakes near Las Piedras Municipio
Ceiba Municipio, PR 26 km (16 mi) SSW of here earthquakes near Ceiba Municipio

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

Aftershocks so far

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

  1. 2.9 6 km NE of Vieques, Puerto Rico
  2. 2.4 17 km SSE of Esperanza, Puerto Rico
  3. 2.0 15 km SE of Punta Santiago, Puerto Rico
  4. 2.4 27 km SE of El Negro, Puerto Rico
  5. 2.1 14 km SE of Esperanza, Puerto Rico
  6. 2.5 30 km SSW of Esperanza, Puerto Rico
  7. 3.0 28 km SE of El Negro, Puerto Rico
  8. 1.7 29 km SE of El Negro, Puerto Rico
  9. 2.7 10 km S of Emajagua, Puerto Rico
  10. 1.9 27 km SE of El Negro, Puerto Rico
  11. 2.2 28 km SE of El Negro, Puerto Rico
  12. 1.7 21 km ESE of El Negro, Puerto Rico
  13. 1.8 6 km ESE of Comunas, Puerto Rico
  14. 1.5 2 km SE of Punta Santiago, Puerto Rico
  15. 2.0 3 km NE of Benitez, 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 2016-09-02 — 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.