QuakeIndex

Earthquake · reviewed by a seismologist

M 3.4Md

126 km NNW of Charlotte Amalie, U.S. Virgin Islands

· 82 km deep · released about 1.9 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 3.4 (Md)
Depth
82 km below the surface
Felt
no reports yet
Nearest
Fajardo Municipio, 124 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3631 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

How big was it?

This earthquake released about 1.9 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.4 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 89,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 4,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 2,800× the energy of this one
  4. This earthquake M 3.4 about 1.9 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 4× 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 19.4484, -65.2417. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Fajardo Municipio, PR 124 km (77 mi) NNE of here earthquakes near Fajardo Municipio
Río Grande Municipio, PR 133 km (83 mi) NNE of here earthquakes near Río Grande Municipio
Loíza Municipio, PR 134 km (83 mi) NNE of here earthquakes near Loíza Municipio
Carolina Municipio, PR 140 km (87 mi) NNE of here earthquakes near Carolina Municipio
San Juan Municipio, PR 143 km (89 mi) NE of here earthquakes near San Juan Municipio
Cataño Municipio, PR 147 km (91 mi) NE of here earthquakes near Cataño Municipio

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

Aftershocks so far

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

  1. 2.5 92 km N of Charlotte Amalie, U.S. Virgin Islands
  2. 2.8 105 km N of Charlotte Amalie, U.S. Virgin Islands
  3. 2.6 82 km N of Charlotte Amalie, U.S. Virgin Islands
  4. 2.1 115 km N of Charlotte Amalie, U.S. Virgin Islands
  5. 2.2 85 km NNW of Charlotte Amalie, U.S. Virgin Islands
  6. 3.1 101 km NNW of Charlotte Amalie, U.S. Virgin Islands
  7. 2.6 114 km NNE of Vieques, Puerto Rico
  8. 3.9 120 km NNE of Vieques, Puerto Rico
  9. 2.8 143 km NNE of Vieques, Puerto Rico
  10. 2.9 110 km N of Charlotte Amalie, U.S. Virgin Islands
  11. 2.2 101 km N of Charlotte Amalie, U.S. Virgin Islands
  12. 2.5 83 km N of Charlotte Amalie, U.S. Virgin Islands
  13. 3.2 137 km NNE of Vieques, Puerto Rico
  14. 3.4 138 km NNE of Vieques, Puerto Rico
  15. 2.7 132 km NNE of Vieques, 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.