QuakeIndex

Earthquake · reviewed by a seismologist

M 4.2md

97 km N of Cruz Bay, U.S. Virgin Islands

· 83 km deep · released about 35 tons 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 4.2 (md)
Depth
83 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 3005 days ago

This was a light earthquake. It is usually felt clearly nearby and can rattle windows and dishes, but damage is uncommon.

How big was it?

This earthquake released about 35 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 5.2 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 4,900× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 220× the energy of this one
  3. Magna, Utah 2020 M 5.7 150× the energy of this one
  4. This earthquake M 4.2 about 35 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 72× more

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 19.2013, -64.6225. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Culebra Municipio, PR 121 km (75 mi) NE of here earthquakes near Culebra Municipio
Fajardo Municipio, PR 136 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 147 km (92 mi) NE of here earthquakes near Luquillo Municipio
Ceiba Municipio, PR 149 km (93 mi) NE of here earthquakes near Ceiba Municipio
Naguabo Municipio, PR 161 km (100 mi) NE of here earthquakes near Naguabo 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. 3.0 50 km NNE of Cruz Bay, U.S. Virgin Islands
  2. 3.4 103 km NNE of Cruz Bay, U.S. Virgin Islands
  3. 3.8 137 km N of Cruz Bay, U.S. Virgin Islands
  4. 3.6 147 km N of Cruz Bay, U.S. Virgin Islands
  5. 3.4 70 km NNE of Cruz Bay, U.S. Virgin Islands
  6. 3.4 105 km NE of Cruz Bay, U.S. Virgin Islands
  7. 3.2 80 km NNE of Cruz Bay, U.S. Virgin Islands
  8. 3.8 117 km NNE of Cruz Bay, U.S. Virgin Islands
  9. 3.4 94 km NNE of Cruz Bay, U.S. Virgin Islands
  10. 3.1 90 km N of Cruz Bay, U.S. Virgin Islands
  11. 3.2 72 km NNE of Cruz Bay, U.S. Virgin Islands
  12. 2.9 123 km N of Cruz Bay, U.S. Virgin Islands
  13. 3.7 104 km NNE of Cruz Bay, U.S. Virgin Islands
  14. 3.4 87 km NNE of Cruz Bay, U.S. Virgin Islands
  15. 3.8 95 km NE 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 3.5 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.