194 km N of Charlotte Amalie, 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.

How big was it?

This earthquake released about 170 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 5.7 would have released about 32 times as much.

1. Northridge, California 1994 M 6.7 1,000× the energy of this one
2. Mineral, Virginia 2011 M 5.8 45× the energy of this one
3. Magna, Utah 2020 M 5.7 32× the energy of this one
4. This earthquake M 4.7 about 170 tons of TNT
5. Around the size people start to feel M 3.0 this one released 350× 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 20.0937, -65.0440. Map © OpenStreetMap contributors.

Aftershocks so far

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

1. 3.7 184 km NNE of Vieques, Puerto Rico 19:53 UTC
2. 2.7 164 km NNE of Vieques, Puerto Rico 06:50 UTC
3. 3.4 175 km N of Charlotte Amalie, U.S. Virgin Islands 03:02 UTC
4. 3.3 163 km NNE of Vieques, Puerto Rico 09:47 UTC
5. 3.8 152 km NNW of Charlotte Amalie, U.S. Virgin Islands 04:01 UTC
6. 3.4 156 km N of Charlotte Amalie, U.S. Virgin Islands 14:26 UTC
7. 2.8 163 km N of Charlotte Amalie, U.S. Virgin Islands 05:48 UTC
8. 3.2 173 km N of Charlotte Amalie, U.S. Virgin Islands 04:18 UTC
9. 3.2 147 km N of Charlotte Amalie, U.S. Virgin Islands 04:35 UTC
10. 3.2 Puerto Rico region 23:56 UTC
11. 3.4 160 km NNE of Vieques, Puerto Rico 08:17 UTC
12. 3.2 148 km N of Charlotte Amalie, U.S. Virgin Islands 00:20 UTC
13. 2.6 151 km N of Charlotte Amalie, U.S. Virgin Islands 06:14 UTC
14. 3.3 146 km N of Charlotte Amalie, U.S. Virgin Islands 09:35 UTC
15. 3.3 180 km NNE of Vieques, Puerto Rico 10:36 UTC

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of 16:11 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 2016-02-06.

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.