156 km NNE of Cruz Bay, U.S. Virgin Islands

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 7.3 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.8 would have released about 32 times as much.

1. Northridge, California 1994 M 6.7 23,000× the energy of this one
2. Mineral, Virginia 2011 M 5.8 1,000× the energy of this one
3. Magna, Utah 2020 M 5.7 730× the energy of this one
4. This earthquake M 3.8 about 7.3 tons of TNT
5. Around the size people start to feel M 3.0 this one released 15× 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 19.6365, -64.2193. Map © OpenStreetMap contributors.

Aftershocks so far

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

1. 3.8 111 km NNE of Cruz Bay, U.S. Virgin Islands 22:45 UTC
2. 3.9 121 km NNE of Cruz Bay, U.S. Virgin Islands 22:31 UTC
3. 3.8 136 km NNE of Cruz Bay, U.S. Virgin Islands 22:26 UTC
4. 3.4 151 km NNE of Cruz Bay, U.S. Virgin Islands 11:41 UTC
5. 3.4 128 km NNE of Cruz Bay, U.S. Virgin Islands 02:58 UTC
6. 3.6 150 km NNE of Cruz Bay, U.S. Virgin Islands 02:51 UTC
7. 3.5 152 km N of Cruz Bay, U.S. Virgin Islands 23:20 UTC
8. 3.8 161 km NNE of Cruz Bay, U.S. Virgin Islands 01:24 UTC
9. 3.4 141 km NNE of Cruz Bay, U.S. Virgin Islands 05:12 UTC
10. 3.5 162 km NNE of Cruz Bay, U.S. Virgin Islands 05:11 UTC
11. 3.2 122 km NE of Cruz Bay, U.S. Virgin Islands 09:03 UTC
12. 3.7 165 km NNE of Cruz Bay, U.S. Virgin Islands 01:03 UTC
13. 3.4 159 km NNE of Cruz Bay, U.S. Virgin Islands 13:35 UTC
14. 3.7 162 km NNE of Cruz Bay, U.S. Virgin Islands 10:04 UTC
15. 3.4 159 km NNE of Cruz Bay, U.S. Virgin Islands 22:21 UTC

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of 16:12 UTC. 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 5.0 on 2019-10-06 — it released about 57 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.