QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8md

18 km SW of Esperanza, Puerto Rico

· 22 km deep · released about 17 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Vieques Municipio 23 kmHumacao Municipio 28 kmYabucoa Municipio 30 kmNaguabo Municipio 31 kmCeiba Municipio 31 kmMaunabo Municipio 33 kmLas Piedras Municipio 38 kmPatillas Municipio 43 kmJuncos Municipio 44 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 1.8 (md)
Depth
22 km below the surface
Felt
no reports yet
Nearest
Vieques Municipio, 23 km NE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2538 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 17 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 870,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 620,000× the energy of this one
  3. Around the size people start to feel M 3.0 55× the energy of this one
  4. This earthquake M 1.8 about 17 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 17.9760, -65.5855. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Vieques Municipio, PR 23 km (14 mi) SW of here earthquakes near Vieques Municipio
Humacao Municipio, PR 28 km (17 mi) SE of here earthquakes near Humacao Municipio
Yabucoa Municipio, PR 30 km (19 mi) ESE of here earthquakes near Yabucoa Municipio
Naguabo Municipio, PR 31 km (19 mi) SSE of here earthquakes near Naguabo Municipio
Ceiba Municipio, PR 31 km (19 mi) S of here earthquakes near Ceiba Municipio
Maunabo Municipio, PR 33 km (20 mi) E of here earthquakes near Maunabo Municipio

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

Aftershocks so far

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

  1. 2.8 22 km SSW of Esperanza, Puerto Rico
  2. 2.7 26 km SE of El Negro, Puerto Rico
  3. 2.3 2 km N of Jagual, Puerto Rico
  4. 2.9 24 km S of Esperanza, Puerto Rico
  5. 3.4 14 km S of Esperanza, Puerto Rico
  6. 2.9 28 km SSW of Esperanza, Puerto Rico
  7. 2.9 33 km SE of Emajagua, Puerto Rico
  8. 3.1 27 km SE of Emajagua, Puerto Rico
  9. 2.5 34 km SSE of Emajagua, Puerto Rico
  10. 3.3 26 km SE of El Negro, Puerto Rico
  11. 2.2 1 km E of Candelero Arriba, Puerto Rico
  12. 2.8 25 km SE of Emajagua, Puerto Rico
  13. 3.0 13 km NNW of Isabel Segunda, Puerto Rico
  14. 2.7 24 km SE of Emajagua, Puerto Rico
  15. 3.1 23 km SW of Esperanza, 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 14,000 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.