103 km NNE of Punta Cana, Dominican Republic

2018-09-12 00:21 UTC · 31 km deep · released about 1.1 tons of TNT

Distance rings around the epicentre, with the nearest towns at their true direction and later quakes as coloured dots. Not a shaking map — see the USGS ShakeMap for that.

When: 2018-09-12 00:21 UTC
Magnitude: M 3.2 (md)
Depth: 31 km below the surface
Felt: no reports yet
Nearest: Aguadilla Municipio, 155 km SE
Status: Reviewed by a seismologist

USGS · last changed by USGS 2867 days ago · we first saw it 2867 days ago

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 1.1 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.2 would have released about 32 times as much.

Northridge, California 1994 M 6.7 150,000× the energy of this one
Mineral, Virginia 2011 M 5.8 6,900× the energy of this one
Magna, Utah 2020 M 5.7 4,900× the energy of this one
This earthquake M 3.2 about 1.1 tons of TNT
Around the size people start to feel M 3.0 this one released 2.3× 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

Map loads when it scrolls into view

Epicentre 19.4860, -68.1633. Map © OpenStreetMap contributors.

Nearby places

Place	Distance	Direction
Aguadilla Municipio, PR	155 km (96 mi)	NW of here	earthquakes near Aguadilla Municipio

Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.

Aftershocks so far

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

2.9 107 km NNE of Punta Cana, Dominican Republic 04:24 UTC
2.7 116 km NNE of Punta Cana, Dominican Republic 14:16 UTC
2.8 97 km NE of Punta Cana, Dominican Republic 08:52 UTC
2.8 70 km NNE of Punta Cana, Dominican Republic 01:43 UTC
3.2 67 km ENE of Miches, Dominican Republic 15:06 UTC
2.9 107 km NNE of Punta Cana, Dominican Republic 09:30 UTC
2.9 104 km NE of Miches, Dominican Republic 08:21 UTC
3.3 79 km ENE of Miches, Dominican Republic 02:54 UTC
3.2 70 km ENE of Miches, Dominican Republic 01:38 UTC
3.2 91 km NE of Miches, Dominican Republic 23:44 UTC
2.9 106 km NE of Miches, Dominican Republic 22:22 UTC
3.4 87 km NE of Miches, Dominican Republic 18:03 UTC
3.1 78 km N of Punta Cana, Dominican Republic 02:40 UTC
3.1 99 km NE of Miches, Dominican Republic 17:15 UTC
3.2 84 km NE of Miches, Dominican Republic 23:58 UTC

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of 14:07 UTC. QuakeIndex does not forecast aftershocks. When USGS issues an operational aftershock forecast it appears on the USGS event page.

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.