124 km NE 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 7.8 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 22,000× the energy of this one
2. Mineral, Virginia 2011 M 5.8 970× the energy of this one
3. Magna, Utah 2020 M 5.7 680× the energy of this one
4. This earthquake M 3.8 about 7.8 tons of TNT
5. Around the size people start to feel M 3.0 this one released 16× 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 19.2366, -64.0946. Map © OpenStreetMap contributors.

Aftershocks so far

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

1. 3.4 84 km NNE of Cruz Bay, U.S. Virgin Islands 13:06 UTC
2. 3.7 116 km NNE of Cruz Bay, U.S. Virgin Islands 22:15 UTC
3. 3.6 82 km NE of Cruz Bay, U.S. Virgin Islands 02:27 UTC
4. 3.5 96 km NE of Cruz Bay, U.S. Virgin Islands 08:42 UTC
5. 3.8 91 km NE of Cruz Bay, U.S. Virgin Islands 06:53 UTC
6. 3.4 88 km NNE of Cruz Bay, U.S. Virgin Islands 01:33 UTC
7. 4.0 124 km NNE of Cruz Bay, U.S. Virgin Islands 07:21 UTC
8. 3.6 107 km NNE of Cruz Bay, U.S. Virgin Islands 05:08 UTC
9. 3.4 86 km NNE of Cruz Bay, U.S. Virgin Islands 18:42 UTC
10. 3.7 85 km NE of Cruz Bay, U.S. Virgin Islands 04:20 UTC
11. 3.5 119 km NNE of Cruz Bay, U.S. Virgin Islands 10:17 UTC
12. 3.9 102 km NNE of Cruz Bay, U.S. Virgin Islands 07:20 UTC
13. 3.9 Virgin Islands 01:17 UTC
14. 3.5 Virgin Islands 19:05 UTC
15. 3.5 106 km NNE of Cruz Bay, U.S. Virgin Islands 06:02 UTC

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of 16:51 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 4.4 on 2018-04-11 — it released about 7.7 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.