QuakeIndex

Earthquake · reviewed by a seismologist

M 2.3md

70 km NNE of Vieques, Puerto Rico

· 68 km deep · released about 91 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Fajardo Municipio 67 kmLuquillo Municipio 72 kmRío Grande Municipio 74 kmLoíza Municipio 75 kmCulebra Municipio 76 kmCarolina Municipio 81 kmCeiba Municipio 82 kmCanóvanas Municipio 83 kmSan Juan Municipio 86 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 2.3 (md)
Depth
68 km below the surface
Felt
no reports yet
Nearest
Fajardo Municipio, 67 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2708 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 91 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.3 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 170,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 120,000× the energy of this one
  3. Around the size people start to feel M 3.0 10× the energy of this one
  4. This earthquake M 2.3 about 91 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 18.9841, -65.5131. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Fajardo Municipio, PR 67 km (42 mi) N of here earthquakes near Fajardo Municipio
Luquillo Municipio, PR 72 km (44 mi) NNE of here earthquakes near Luquillo Municipio
Río Grande Municipio, PR 74 km (46 mi) NNE of here earthquakes near Río Grande Municipio
Loíza Municipio, PR 75 km (47 mi) NE of here earthquakes near Loíza Municipio
Culebra Municipio, PR 76 km (47 mi) NNW of here earthquakes near Culebra Municipio
Carolina Municipio, PR 81 km (50 mi) NE of here earthquakes near Carolina Municipio

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

Aftershocks so far

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

  1. 2.7 96 km NNE of Luquillo, Puerto Rico
  2. 2.5 36 km NNE of Suárez, Puerto Rico
  3. 2.5 117 km NNE of Vieques, Puerto Rico
  4. 3.3 111 km NNE of Suárez, Puerto Rico
  5. 3.0 59 km N of Culebra, Puerto Rico
  6. 2.2 44 km NE of Luquillo, Puerto Rico
  7. 2.3 48 km NNW of Charlotte Amalie, U.S. Virgin Islands
  8. 3.2 112 km NNE of Suárez, Puerto Rico
  9. 2.7 115 km NNE of Vieques, Puerto Rico
  10. 2.1 37 km NNW of Culebra, Puerto Rico
  11. 2.9 70 km N of Culebra, Puerto Rico
  12. 2.3 84 km NNW of Charlotte Amalie, U.S. Virgin Islands
  13. 2.7 57 km N of Culebra, Puerto Rico
  14. 2.4 42 km NNW of Culebra, Puerto Rico
  15. 3.1 67 km NNW 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 4.5 on 2018-03-06 — it released about 1,900 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.