Earthquake · reviewed by a seismologist
M 4.0md
94 km N of Charlotte Amalie, U.S. Virgin Islands
- When
- Magnitude
- M 4.0 (md)
- Depth
- 33 km below the surface
- Felt
- 1 report · strongest reported intensity II
- Nearest
- Culebra Municipio, 106 km SSW
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 2525 days ago
This was a light earthquake. It is usually felt clearly nearby and can rattle windows and dishes, but damage is uncommon. 1 person has reported feeling it to USGS.
How big was it?
This earthquake released about 18 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 5.0 would have released about 32 times as much.
- Northridge, California 1994 M 6.7 9,400× the energy of this one
- Mineral, Virginia 2011 M 5.8 420× the energy of this one
- Magna, Utah 2020 M 5.7 300× the energy of this one
- This earthquake M 4.0 about 18 tons of TNT
- Around the size people start to feel M 3.0 this one released 38× more
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 19.1976, -64.9021. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction | |
|---|---|---|---|
| Culebra Municipio, PR | 106 km (66 mi) | NNE of here | earthquakes near Culebra Municipio |
| Fajardo Municipio, PR | 116 km (72 mi) | NE of here | earthquakes near Fajardo Municipio |
| Luquillo Municipio, PR | 125 km (78 mi) | NE of here | earthquakes near Luquillo Municipio |
| Ceiba Municipio, PR | 129 km (80 mi) | NE of here | earthquakes near Ceiba Municipio |
| Río Grande Municipio, PR | 131 km (82 mi) | NE of here | earthquakes near Río Grande Municipio |
| Vieques Municipio, PR | 132 km (82 mi) | NNE of here | earthquakes near Vieques Municipio |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
44 earthquakes have been recorded within 50 km since this one.
- 3.4 92 km NNE of Cruz Bay, U.S. Virgin Islands
- 3.4 130 km N of Cruz Bay, U.S. Virgin Islands
- 3.4 134 km N of Cruz Bay, U.S. Virgin Islands
- 3.1 64 km N of Cruz Bay, U.S. Virgin Islands
- 2.6 82 km N of Culebra, Puerto Rico
- 3.0 98 km NNE of Cruz Bay, U.S. Virgin Islands
- 3.2 65 km NNE of Cruz Bay, U.S. Virgin Islands
- 3.4 102 km N of Cruz Bay, U.S. Virgin Islands
- 3.4 85 km N of Cruz Bay, U.S. Virgin Islands
- 3.1 94 km N of Cruz Bay, U.S. Virgin Islands
- 2.7 83 km N of Cruz Bay, U.S. Virgin Islands
- 2.6 89 km N of Charlotte Amalie, U.S. Virgin Islands
- 3.5 96 km N of Cruz Bay, U.S. Virgin Islands
- 3.4 69 km NNE of Cruz Bay, U.S. Virgin Islands
- 3.3 92 km N of Cruz Bay, 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 4.8 on 2019-02-18 — it released about 13 times the energy of this one.
From the QuakeIndex catalogue, built from the USGS FDSN event service.
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.