Earthquake · reviewed by a seismologist
M 3.2md
160 km NNE of Cruz Bay, U.S. Virgin Islands
Yes. A magnitude 3.2 earthquake was recorded 160 km NNE of Cruz Bay, U.S. Virgin Islands at 00:41 UTC on 2019-10-13, 25 km deep.
- When
- Magnitude
- M 3.2 (md)
- Depth
- 25 km below the surface
- Felt
- no reports yet
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 2510 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, people at rest would likely notice it out to about 42 km (26 mi) from the epicentre. 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 1.1 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.2 would have released about 32 times as much.
- Northridge, California 1994 M 6.7 150,000× the energy of this one
- Mineral, Virginia 2011 M 5.8 6,900× the energy of this one
- Magna, Utah 2020 M 5.7 4,900× the energy of this one
- This earthquake M 3.2 about 1.1 tons of TNT
- Around the size people start to feel M 3.0 this one released 2.3× 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.
For this area
The largest earthquake within 50 km since 2016 was M 5.0 on 2019-10-06 — about 380 times the energy of this one.
Before 2016, the USGS record lists 2 earthquakes of M5 or more within 50 km:
- 6.2 131 km NNE of Cruz Bay, U.S. Virgin Islands · 29 km S of this epicentre
- 5.0 127 km NNE of Cruz Bay, U.S. Virgin Islands · 33 km SSW 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 19.7475, -64.4625. Map © OpenStreetMap contributors.
Aftershocks so far
40 earthquakes have been recorded within 50 km since this one.
- 3.6 113 km N of Cruz Bay, U.S. Virgin Islands
- 4.0 125 km NNE of Cruz Bay, U.S. Virgin Islands
- 3.8 114 km N of Cruz Bay, U.S. Virgin Islands
- 3.6 139 km N of Cruz Bay, U.S. Virgin Islands
- 3.9 150 km N of Cruz Bay, U.S. Virgin Islands
- 3.6 144 km N of Charlotte Amalie, U.S. Virgin Islands
- 3.8 162 km N of Cruz Bay, U.S. Virgin Islands
- 4.3 129 km NNE of Cruz Bay, U.S. Virgin Islands
- 4.4 Virgin Islands
- 3.8 111 km NNE of Cruz Bay, U.S. Virgin Islands
- 4.2 125 km NNE of Cruz Bay, U.S. Virgin Islands
- 3.9 139 km N of Cruz Bay, U.S. Virgin Islands
- 3.0 155 km NNE of Cruz Bay, U.S. Virgin Islands
- 3.5 160 km NNE of Cruz Bay, U.S. Virgin Islands
- 3.6 120 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.
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.