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

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 24 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 5.1 would have released about 32 times as much.

1. Northridge, California 1994 M 6.7 7,200× the energy of this one
2. Mineral, Virginia 2011 M 5.8 320× the energy of this one
3. Magna, Utah 2020 M 5.7 230× the energy of this one
4. This earthquake M 4.1 about 24 tons of TNT
5. Around the size people start to feel M 3.0 this one released 50× 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 19.5586, -64.3933. Map © OpenStreetMap contributors.

Aftershocks so far

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

1. 4.0 124 km NNE of Cruz Bay, U.S. Virgin Islands 07:21 UTC
2. 3.6 107 km NNE of Cruz Bay, U.S. Virgin Islands 05:08 UTC
3. 3.1 114 km N of Charlotte Amalie, U.S. Virgin Islands 17:11 UTC
4. 3.7 107 km N of Cruz Bay, U.S. Virgin Islands 15:58 UTC
5. 3.4 Virgin Islands 03:19 UTC
6. 3.7 102 km N of Cruz Bay, U.S. Virgin Islands 21:51 UTC
7. 3.9 117 km N of Cruz Bay, U.S. Virgin Islands 16:37 UTC
8. 3.6 110 km N of Cruz Bay, U.S. Virgin Islands 15:57 UTC
9. 3.5 119 km NNE of Cruz Bay, U.S. Virgin Islands 10:17 UTC
10. 3.9 102 km NNE of Cruz Bay, U.S. Virgin Islands 07:20 UTC
11. 4.0 100 km NNE of Cruz Bay, U.S. Virgin Islands 12:17 UTC
12. 3.8 94 km N of Cruz Bay, U.S. Virgin Islands 08:21 UTC
13. 3.9 157 km N of Cruz Bay, U.S. Virgin Islands 11:03 UTC
14. 3.5 106 km NNE of Cruz Bay, U.S. Virgin Islands 06:02 UTC
15. 3.7 95 km NNE of Cruz Bay, U.S. Virgin Islands 09:06 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 18 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.