QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8md

23 km SSE of Esperanza, Puerto Rico

· 22 km deep · released about 16 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Vieques Municipio 26 kmCeiba Municipio 45 kmHumacao Municipio 47 kmNaguabo Municipio 49 kmCulebra Municipio 50 kmYabucoa Municipio 50 kmMaunabo Municipio 52 kmFajardo Municipio 58 kmLas Piedras Municipio 58 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, 26 km N
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2749 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 16 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 5.8 930,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 660,000× the energy of this one
  3. Around the size people start to feel M 3.0 59× the energy of this one
  4. This earthquake M 1.8 about 16 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 17.8930, -65.4206. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Vieques Municipio, PR 26 km (16 mi) S of here earthquakes near Vieques Municipio
Ceiba Municipio, PR 45 km (28 mi) SSE of here earthquakes near Ceiba Municipio
Humacao Municipio, PR 47 km (29 mi) SE of here earthquakes near Humacao Municipio
Naguabo Municipio, PR 49 km (30 mi) SE of here earthquakes near Naguabo Municipio
Culebra Municipio, PR 50 km (31 mi) SSW of here earthquakes near Culebra Municipio
Yabucoa Municipio, PR 50 km (31 mi) ESE of here earthquakes near Yabucoa Municipio

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

Aftershocks so far

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

  1. 2.0 21 km ESE of El Negro, Puerto Rico
  2. 2.3 13 km S of Esperanza, Puerto Rico
  3. 2.2 36 km S of Charlotte Amalie, U.S. Virgin Islands
  4. 1.9 17 km S of Esperanza, Puerto Rico
  5. 2.6 11 km SE of Isabel Segunda, Puerto Rico
  6. 2.7 31 km SE of Esperanza, Puerto Rico
  7. 1.9 16 km SSW of Esperanza, Puerto Rico
  8. 2.7 18 km SSE of Esperanza, Puerto Rico
  9. 1.7 18 km SSE of Punta Santiago, Puerto Rico
  10. 2.5 26 km SE of Esperanza, Puerto Rico
  11. 2.9 10 km SSE of Esperanza, Puerto Rico
  12. 2.4 18 km S of Esperanza, Puerto Rico
  13. 2.0 21 km S of Esperanza, Puerto Rico
  14. 2.7 3 km E of Ceiba, Puerto Rico
  15. 1.7 24 km SE of Emajagua, 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 15,000 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.