QuakeIndex

Earthquake · reviewed by a seismologist

M 3.0Md

123 km NNE of Vieques, Puerto Rico

· 88 km deep · released about 950 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 3.0 (Md)
Depth
88 km below the surface
Felt
no reports yet
Nearest
Loíza Municipio, 126 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3575 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 950 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.0 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 350,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 16,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 11,000× the energy of this one
  4. This earthquake M 3.0 about 950 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 19.4664, -65.4243. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Loíza Municipio, PR 126 km (78 mi) NNE of here earthquakes near Loíza Municipio
Carolina Municipio, PR 132 km (82 mi) NNE of here earthquakes near Carolina Municipio
San Juan Municipio, PR 134 km (84 mi) NNE of here earthquakes near San Juan Municipio
Cataño Municipio, PR 137 km (85 mi) NNE of here earthquakes near Cataño Municipio
Toa Baja Municipio, PR 138 km (86 mi) NE of here earthquakes near Toa Baja Municipio
Dorado Municipio, PR 141 km (88 mi) NE of here earthquakes near Dorado Municipio

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

Aftershocks so far

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

  1. 3.3 109 km N of Charlotte Amalie, U.S. Virgin Islands
  2. 3.2 140 km NNE of Vieques, Puerto Rico
  3. 3.4 103 km N of Charlotte Amalie, U.S. Virgin Islands
  4. 3.5 104 km NNE of Vieques, Puerto Rico
  5. 3.1 112 km NNW of Charlotte Amalie, U.S. Virgin Islands
  6. 3.2 113 km N of Charlotte Amalie, U.S. Virgin Islands
  7. 3.4 114 km N of Charlotte Amalie, U.S. Virgin Islands
  8. 4.2 112 km N of Charlotte Amalie, U.S. Virgin Islands
  9. 3.0 104 km N of Culebra, Puerto Rico
  10. 3.1 84 km N of Suárez, Puerto Rico
  11. 3.5 124 km N of Charlotte Amalie, U.S. Virgin Islands
  12. 2.7 110 km N of Charlotte Amalie, U.S. Virgin Islands
  13. 1.6 91 km NNE of Luquillo, Puerto Rico
  14. 3.4 85 km N of Culebra, Puerto Rico
  15. 3.9 118 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.

For this area

The largest earthquake within 50 km in our catalogue was M 4.3 on 2016-09-04 — it released about 89 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.