Earthquake · reviewed by a seismologist
M 3.0md
68 km N of Charlotte Amalie, U.S. Virgin Islands
- When
- Magnitude
- M 3.0 (md)
- Depth
- 22 km below the surface
- Felt
- no reports yet
- Nearest
- Culebra Municipio, 81 km SSW
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 2 hours ago
A magnitude 3.0 earthquake was recorded 68 km N of Charlotte Amalie, U.S. Virgin Islands at 08:20 UTC on 2026-10-04. 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 990 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.
- Northridge, California 1994 M 6.7 340,000× the energy of this one
- Mineral, Virginia 2011 M 5.8 15,000× the energy of this one
- Magna, Utah 2020 M 5.7 11,000× the energy of this one
- This earthquake M 3.0 about 990 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 5.0 on 2021-02-06 — about 930 times the energy of this one.
Before 2016, the USGS record lists 15 earthquakes of M5 or more within 50 km; the five largest:
- 6.1 91 km N of Charlotte Amalie, U.S. Virgin Islands · 24 km NNE of this epicentre
- 6.0 112 km N of Charlotte Amalie, U.S. Virgin Islands · 44 km N of this epicentre
- 5.9 68 km N of Cruz Bay, U.S. Virgin Islands · 23 km E of this epicentre
- 5.9 65 km NNE of Cruz Bay, U.S. Virgin Islands · 37 km ESE of this epicentre
- 5.7 80 km NNE of Cruz Bay, U.S. Virgin Islands · 37 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 18.9618, -64.9240. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction from the epicentre | |
|---|---|---|---|
| Culebra Municipio, PR | 81 km (51 mi) | SSW | earthquakes near Culebra Municipio |
| Fajardo Municipio, PR | 95 km (59 mi) | SW | earthquakes near Fajardo Municipio |
| Luquillo Municipio, PR | 106 km (66 mi) | SW | earthquakes near Luquillo Municipio |
| Vieques Municipio, PR | 107 km (67 mi) | SSW | earthquakes near Vieques Municipio |
| Ceiba Municipio, PR | 108 km (67 mi) | SW | earthquakes near Ceiba Municipio |
| Río Grande Municipio, PR | 113 km (70 mi) | SW | earthquakes near Río Grande Municipio |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
No further earthquakes have been recorded within 50 km since this one.
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
- The official USGS event page — the source of record for every value above
- Did you feel it? Report it to USGS — reports go to USGS, not to us
- ShakeMap for this event, when USGS has produced one
QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.