QuakeIndex

Earthquake · reviewed by a seismologist

M 2.6md

83 km N of Charlotte Amalie, U.S. Virgin Islands

Yes. A magnitude 2.6 earthquake was recorded 83 km N of Charlotte Amalie, U.S. Virgin Islands, at 10:09 pm AST on 1 November 2018 (02:09 UTC), 50 km deep.

· 50 km deep · released about 240 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Culebra Municipio 90 kmFajardo Municipio 98 kmLuquillo Municipio 107 kmCeiba Municipio 112 kmRío Grande Municipio 113 kmVieques Municipio 115 kmLoíza Municipio 120 km
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 2.6 (md)
Depth
50 km below the surface
Felt
no reports yet
Nearest
Culebra Municipio, 90 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2851 days ago

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

At this magnitude and depth it was probably too small to be felt, even directly above it. Estimated from magnitude, depth and distance with the intensity equation USGS Did You Feel It? uses; felt reports, where there are any, are the measurement.

How big was it?

This earthquake released about 240 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 63,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 45,000× the energy of this one
  3. Around the size people start to feel M 3.0 4× the energy of this one
  4. This earthquake M 2.6 about 240 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.

For this area

The largest earthquake within 50 km since 2016 was M 4.5 on 2018-02-09 — about 710 times the energy of this one.

Before 2016, the USGS record lists 15 earthquakes of M5 or more within 50 km; the five largest:

  1. 6.1 91 km N of Charlotte Amalie, U.S. Virgin Islands · 22 km ENE of this epicentre
  2. 6.0 112 km N of Charlotte Amalie, U.S. Virgin Islands · 31 km NNE of this epicentre
  3. 5.9 68 km N of Cruz Bay, U.S. Virgin Islands · 38 km ESE of this epicentre
  4. 5.7 80 km NNE of Cruz Bay, U.S. Virgin Islands · 49 km E of this epicentre
  5. 5.6 112 km N of Charlotte Amalie, U.S. Virgin Islands · 33 km NNE of this epicentre

Since 2016: the QuakeIndex catalogue (US, M1.5+), built from the USGS FDSN event service. Before 2016: USGS ComCat, M5+ from 1900. Distances are between epicentres. This is the record, not a forecast.

Where

Epicentre 19.0913, -65.0330. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Culebra Municipio, PR 90 km (56 mi) SSW earthquakes near Culebra Municipio
Fajardo Municipio, PR 98 km (61 mi) SW earthquakes near Fajardo Municipio
Luquillo Municipio, PR 107 km (67 mi) SW earthquakes near Luquillo Municipio
Ceiba Municipio, PR 112 km (70 mi) SSW earthquakes near Ceiba Municipio
Río Grande Municipio, PR 113 km (70 mi) SW earthquakes near Río Grande Municipio
Vieques Municipio, PR 115 km (72 mi) SSW earthquakes near Vieques Municipio

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

Aftershocks so far

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

  1. 3.1 87 km N of Charlotte Amalie, U.S. Virgin Islands
  2. 3.1 121 km N of Cruz Bay, U.S. Virgin Islands
  3. 2.9 83 km N of Charlotte Amalie, U.S. Virgin Islands
  4. 3.1 108 km N of Charlotte Amalie, U.S. Virgin Islands
  5. 3.3 98 km N of Charlotte Amalie, U.S. Virgin Islands
  6. 3.4 117 km N of Charlotte Amalie, U.S. Virgin Islands
  7. 2.4 65 km N of Charlotte Amalie, U.S. Virgin Islands
  8. 3.4 98 km N of Cruz Bay, U.S. Virgin Islands
  9. 2.1 47 km N of Culebra, Puerto Rico
  10. 2.5 64 km N of Culebra, Puerto Rico
  11. 3.3 74 km N of Charlotte Amalie, U.S. Virgin Islands
  12. 3.4 93 km NNW of Charlotte Amalie, U.S. Virgin Islands
  13. 3.0 68 km NNW of Charlotte Amalie, U.S. Virgin Islands
  14. 2.4 71 km N of Culebra, Puerto Rico
  15. 3.6 105 km N 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.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.