QuakeIndex

Earthquake · reviewed by a seismologist

M 2.5md

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

Yes. A magnitude 2.5 earthquake was recorded 35 km NNW of Charlotte Amalie, U.S. Virgin Islands, at 7:50 pm AST on 7 November 2018 (23:50 UTC), 22 km deep.

· 22 km deep · released about 150 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Culebra Municipio 44 kmFajardo Municipio 63 kmVieques Municipio 70 kmCeiba Municipio 73 kmLuquillo Municipio 75 kmRío Grande Municipio 83 kmNaguabo Municipio 86 kmCanóvanas Municipio 94 kmHumacao Municipio 95 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 2.5 (md)
Depth
22 km below the surface
Felt
no reports yet
Nearest
Culebra Municipio, 44 km SW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2926 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause 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 150 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 100,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 72,000× the energy of this one
  3. Around the size people start to feel M 3.0 6.5× the energy of this one
  4. This earthquake M 2.5 about 150 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 4.7 on 2018-04-06 — about 2,300 times the energy of this one.

Before 2016, the USGS record lists 2 earthquakes of M5 or more within 50 km:

  1. 5.2 36 km NNE of Cruz Bay, U.S. Virgin Islands · 38 km E of this epicentre
  2. 5.0 40 km NNE of Cruz Bay, U.S. Virgin Islands · 44 km E 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 18.6423, -65.0591. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Culebra Municipio, PR 44 km (27 mi) SW earthquakes near Culebra Municipio
Fajardo Municipio, PR 63 km (39 mi) WSW earthquakes near Fajardo Municipio
Vieques Municipio, PR 70 km (43 mi) SW earthquakes near Vieques Municipio
Ceiba Municipio, PR 73 km (46 mi) SW earthquakes near Ceiba Municipio
Luquillo Municipio, PR 75 km (47 mi) WSW earthquakes near Luquillo Municipio
Río Grande Municipio, PR 83 km (52 mi) WSW earthquakes near Río Grande Municipio

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

Aftershocks so far

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

  1. 3.0 85 km NNW of Charlotte Amalie, U.S. Virgin Islands
  2. 2.8 67 km N of Culebra, Puerto Rico
  3. 2.3 56 km NNW of Charlotte Amalie, U.S. Virgin Islands
  4. 2.9 63 km NNW of Charlotte Amalie, U.S. Virgin Islands
  5. 2.3 58 km NNE of Culebra, Puerto Rico
  6. 2.4 55 km N of Culebra, Puerto Rico
  7. 3.1 62 km N of Cruz Bay, U.S. Virgin Islands
  8. 2.3 35 km NE of Luquillo, Puerto Rico
  9. 2.8 60 km N of Culebra, Puerto Rico
  10. 2.8 44 km N of Charlotte Amalie, U.S. Virgin Islands
  11. 2.9 Virgin Islands
  12. 2.6 57 km NNW of Charlotte Amalie, U.S. Virgin Islands
  13. 3.0 49 km N of Charlotte Amalie, U.S. Virgin Islands
  14. 2.9 39 km NNW of Culebra, Puerto Rico
  15. 2.2 50 km NNE of Luquillo, 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.