QuakeIndex

Earthquake · reviewed by a seismologist

M 2.8md

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

· 27 km deep · released about 530 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 2.8 (md)
Depth
27 km below the surface
Felt
no reports yet
Nearest
Loíza Municipio, 140 km SW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2550 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 530 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 29,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 20,000× the energy of this one
  3. Around the size people start to feel M 3.0 1.8× the energy of this one
  4. This earthquake M 2.8 about 530 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 19.4648, -65.1691. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Loíza Municipio, PR 140 km (87 mi) NE of here earthquakes near Loíza Municipio
Carolina Municipio, PR 146 km (90 mi) NE of here earthquakes near Carolina Municipio
San Juan Municipio, PR 150 km (93 mi) NE of here earthquakes near San Juan Municipio
Cataño Municipio, PR 153 km (95 mi) NE of here earthquakes near Cataño Municipio
Toa Baja Municipio, PR 155 km (97 mi) NE of here earthquakes near Toa Baja Municipio
Dorado Municipio, PR 159 km (99 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

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

  1. 3.4 Puerto Rico region
  2. 3.8 145 km N of Charlotte Amalie, U.S. Virgin Islands
  3. 3.4 134 km N of Cruz Bay, U.S. Virgin Islands
  4. 3.2 130 km NNE of Vieques, Puerto Rico
  5. 2.6 82 km N of Culebra, Puerto Rico
  6. 2.6 89 km N of Charlotte Amalie, U.S. Virgin Islands
  7. 3.5 107 km N of Cruz Bay, U.S. Virgin Islands
  8. 2.8 105 km N of Charlotte Amalie, U.S. Virgin Islands
  9. 3.3 100 km N of Charlotte Amalie, U.S. Virgin Islands
  10. 2.8 97 km N of Charlotte Amalie, U.S. Virgin Islands
  11. 2.5 88 km N of Charlotte Amalie, U.S. Virgin Islands
  12. 2.7 106 km N of Charlotte Amalie, U.S. Virgin Islands
  13. 3.0 119 km N of Charlotte Amalie, U.S. Virgin Islands
  14. 2.7 98 km N of Culebra, Puerto Rico
  15. 2.7 91 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 4.9 on 2018-11-14 — it released about 1,300 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.