152 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 1.9 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.4 would have released about 32 times as much.

1. Northridge, California 1994 M 6.7 89,000× the energy of this one
2. Mineral, Virginia 2011 M 5.8 4,000× the energy of this one
3. Magna, Utah 2020 M 5.7 2,800× the energy of this one
4. This earthquake M 3.4 about 1.9 tons of TNT
5. Around the size people start to feel M 3.0 this one released 4× 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 19.5058, -64.0440. Map © OpenStreetMap contributors.

Aftershocks so far

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

1. 2.3 106 km NE of Cruz Bay, U.S. Virgin Islands 14:10 UTC
2. 2.2 110 km NNE of Cruz Bay, U.S. Virgin Islands 02:17 UTC
3. 2.6 105 km NNE of Cruz Bay, U.S. Virgin Islands 02:16 UTC
4. 2.5 108 km NE of Cruz Bay, U.S. Virgin Islands 00:24 UTC
5. 2.9 109 km NE of Cruz Bay, U.S. Virgin Islands 00:17 UTC
6. 2.2 120 km NE of Cruz Bay, U.S. Virgin Islands 00:13 UTC
7. 3.5 134 km NE of Cruz Bay, U.S. Virgin Islands 00:10 UTC
8. 3.5 132 km NE of Cruz Bay, U.S. Virgin Islands 23:32 UTC
9. 2.5 115 km NE of Cruz Bay, U.S. Virgin Islands 21:49 UTC
10. 2.8 Virgin Islands 03:04 UTC
11. 2.6 139 km NNE of Cruz Bay, U.S. Virgin Islands 02:57 UTC
12. 2.0 114 km NNE of Cruz Bay, U.S. Virgin Islands 14:44 UTC
13. 2.6 123 km NE of Cruz Bay, U.S. Virgin Islands 14:42 UTC
14. 2.4 116 km NE of Cruz Bay, U.S. Virgin Islands 13:45 UTC
15. 2.3 109 km NE of Cruz Bay, U.S. Virgin Islands 10:47 UTC

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of 21:37 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 4.6 on 2016-01-15 — it released about 63 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.