136 km NNE of Punta Cana, Dominican Republic

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 890 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.0 would have released about 32 times as much.

1. Northridge, California 1994 M 6.7 380,000× the energy of this one
2. Mineral, Virginia 2011 M 5.8 17,000× the energy of this one
3. Magna, Utah 2020 M 5.7 12,000× the energy of this one
4. This earthquake M 3.0 about 890 lb of TNT

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 19.6151, -67.6938. Map © OpenStreetMap contributors.

Aftershocks so far

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

1. 3.5 98 km NNW of San Antonio, Puerto Rico 23:19 UTC
2. 3.1 92 km NNW of San Antonio, Puerto Rico 21:02 UTC
3. 3.0 94 km NNW of San Antonio, Puerto Rico 20:15 UTC
4. 3.0 Mona Passage 14:05 UTC
5. 2.7 100 km NNW of San Antonio, Puerto Rico 13:24 UTC
6. 2.3 99 km NNW of San Antonio, Puerto Rico 13:00 UTC
7. 3.0 91 km NNW of San Antonio, Puerto Rico 12:41 UTC
8. 2.9 92 km NNW of San Antonio, Puerto Rico 11:00 UTC
9. 3.0 93 km NNW of San Antonio, Puerto Rico 04:18 UTC
10. 2.5 108 km NNE of Punta Cana, Dominican Republic 20:24 UTC
11. 2.8 109 km NNE of Punta Cana, Dominican Republic 23:07 UTC
12. 3.2 112 km NNW of San Antonio, Puerto Rico 03:15 UTC
13. 3.1 108 km NNW of San Antonio, Puerto Rico 17:34 UTC
14. 3.3 108 km NNE of Punta Cana, Dominican Republic 20:35 UTC
15. 3.1 118 km NNE of Punta Cana, Dominican Republic 11:21 UTC

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of 13:29 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 4.7 on 2018-12-07 — it released about 340 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.