QuakeIndex

Earthquake · reviewed by a seismologist

M 1.8Md

96 km NNE of Cruz Bay, U.S. Virgin Islands

· 48 km deep · released about 15 lb of TNT

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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
48 km below the surface
Felt
no reports yet
Nearest
Culebra Municipio, 121 km SW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3794 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 5.7 710,000× the energy of this one
  3. Around the size people start to feel M 3.0 63× 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 19.1755, -64.5820. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Culebra Municipio, PR 121 km (75 mi) NE of here earthquakes near Culebra Municipio
Fajardo Municipio, PR 138 km (85 mi) NE of here earthquakes near Fajardo Municipio
Vieques Municipio, PR 147 km (91 mi) NE of here earthquakes near Vieques Municipio
Luquillo Municipio, PR 149 km (93 mi) NE of here earthquakes near Luquillo Municipio
Ceiba Municipio, PR 150 km (93 mi) NE of here earthquakes near Ceiba Municipio

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

Aftershocks so far

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

  1. 2.0 94 km N of Cruz Bay, U.S. Virgin Islands
  2. 2.0 100 km N of Cruz Bay, U.S. Virgin Islands
  3. 2.0 80 km N of Cruz Bay, U.S. Virgin Islands
  4. 2.4 99 km N of Cruz Bay, U.S. Virgin Islands
  5. 2.6 105 km N of Cruz Bay, U.S. Virgin Islands
  6. 2.4 57 km NNE of Charlotte Amalie, U.S. Virgin Islands
  7. 2.2 95 km N of Cruz Bay, U.S. Virgin Islands
  8. 2.7 81 km N of Cruz Bay, U.S. Virgin Islands
  9. 1.9 91 km N of Cruz Bay, U.S. Virgin Islands
  10. 2.8 105 km N of Cruz Bay, U.S. Virgin Islands
  11. 2.3 96 km N of Cruz Bay, U.S. Virgin Islands
  12. 1.9 91 km N of Cruz Bay, U.S. Virgin Islands
  13. 2.6 99 km N of Cruz Bay, U.S. Virgin Islands
  14. 2.0 93 km N of Cruz Bay, U.S. Virgin Islands
  15. 2.7 85 km N of Cruz Bay, 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 4.6 on 2016-01-15 — it released about 16,000 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.