138 km N of Suárez, Puerto Rico

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 17 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 5.0 would have released about 32 times as much.

1. Northridge, California 1994 M 6.7 10,000× the energy of this one
2. Mineral, Virginia 2011 M 5.8 450× the energy of this one
3. Magna, Utah 2020 M 5.7 320× the energy of this one
4. This earthquake M 4.0 about 17 tons of TNT
5. Around the size people start to feel M 3.0 this one released 35× 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 19.6718, -65.7216. Map © OpenStreetMap contributors.

Aftershocks so far

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

1. 3.8 138 km NNE of Suárez, Puerto Rico 06:09 UTC
2. 3.7 145 km NNE of Vieques, Puerto Rico 09:50 UTC
3. 3.9 141 km N of Suárez, Puerto Rico 23:52 UTC
4. 4.2 123 km N of Suárez, Puerto Rico 18:43 UTC
5. 3.7 135 km N of Suárez, Puerto Rico 16:31 UTC
6. 3.1 132 km N of Suárez, Puerto Rico 04:29 UTC
7. 4.0 123 km NNE of Vieques, Puerto Rico 22:15 UTC
8. 3.3 104 km N of San Juan, Puerto Rico 08:17 UTC
9. 3.5 116 km N of San Juan, Puerto Rico 03:24 UTC
10. 3.8 133 km NNE of Vieques, Puerto Rico 07:07 UTC
11. 3.7 141 km NNE of Vieques, Puerto Rico 07:03 UTC
12. 3.7 142 km NNE of Vieques, Puerto Rico 23:50 UTC
13. 3.8 118 km NNE of Vieques, Puerto Rico 11:36 UTC
14. 3.5 121 km N of San Juan, Puerto Rico 05:13 UTC
15. 3.7 134 km N of San Juan, Puerto Rico 12:40 UTC

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of 12:41 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 2023-02-28 — it released about 4.1 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.