QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8md

25 km NNE of Vieques, Puerto Rico

· 35 km deep · released about 15 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Luquillo Municipio 29 kmRío Grande Municipio 30 kmFajardo Municipio 30 kmLoíza Municipio 32 kmCarolina Municipio 37 kmCanóvanas Municipio 38 kmCeiba Municipio 43 kmSan Juan Municipio 44 kmTrujillo Alto Municipio 45 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
35 km below the surface
Felt
no reports yet
Nearest
Luquillo Municipio, 29 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2536 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 15 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 1,000,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 730,000× the energy of this one
  3. Around the size people start to feel M 3.0 65× the energy of this one
  4. This earthquake M 1.8 about 15 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 18.6318, -65.7173. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Luquillo Municipio, PR 29 km (18 mi) N of here earthquakes near Luquillo Municipio
Río Grande Municipio, PR 30 km (18 mi) NNE of here earthquakes near Río Grande Municipio
Fajardo Municipio, PR 30 km (19 mi) NNW of here earthquakes near Fajardo Municipio
Loíza Municipio, PR 32 km (20 mi) NE of here earthquakes near Loíza Municipio
Carolina Municipio, PR 37 km (23 mi) NE of here earthquakes near Carolina Municipio
Canóvanas Municipio, PR 38 km (24 mi) NNE of here earthquakes near Canóvanas 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. 2.9 68 km N of Suárez, Puerto Rico
  2. 2.6 62 km N of Suárez, Puerto Rico
  3. 2.8 14 km NNW of San Juan, Puerto Rico
  4. 2.4 34 km N of San Juan, Puerto Rico
  5. 2.9 51 km N of Loíza, Puerto Rico
  6. 3.1 60 km N of Loíza, Puerto Rico
  7. 3.0 65 km N of Suárez, Puerto Rico
  8. 2.8 63 km N of Suárez, Puerto Rico
  9. 2.7 60 km N of Loíza, Puerto Rico
  10. 3.0 58 km N of Loíza, Puerto Rico
  11. 2.7 59 km N of Loíza, Puerto Rico
  12. 3.6 71 km N of Suárez, Puerto Rico
  13. 2.3 60 km N of Suárez, Puerto Rico
  14. 3.0 47 km N of Culebra, Puerto Rico
  15. 3.1 65 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.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.