15 km WNW of Enoch, Utah

2018-10-18 02:31 UTC · 14 km deep · released about 25 lb 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: 2018-10-18 02:31 UTC
Magnitude: M 1.9 (ml)
Depth: 14 km below the surface
Felt: no reports yet
Nearest: Iron County, 15 km NW
Status: Reviewed by a seismologist

USGS · last changed by USGS 2901 days ago · we first saw it 2901 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

How big was it?

This earthquake released about 25 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.0 would have released about 32 times as much.

Mineral, Virginia 2011 M 5.8 600,000× the energy of this one
Magna, Utah 2020 M 5.7 420,000× the energy of this one
Around the size people start to feel M 3.0 38× the energy of this one
This earthquake M 1.9 about 25 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

Map loads when it scrolls into view

Epicentre 37.8132, -113.1887. Map © OpenStreetMap contributors.

Nearby places

Place	Distance	Direction
Iron County, UT	15 km (9 mi)	SE of here	earthquakes near Iron County
Beaver County, UT	61 km (38 mi)	S of here	earthquakes near Beaver County
Washington County, UT	67 km (41 mi)	NNE of here	earthquakes near Washington County
Piute County, UT	109 km (68 mi)	WSW of here	earthquakes near Piute County

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

Aftershocks so far

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

1.6 16 km WNW of Enoch, Utah 20:40 UTC
1.8 15 km WNW of Enoch, Utah 07:36 UTC
1.8 15 km WNW of Enoch, Utah 00:56 UTC
2.4 16 km WNW of Enoch, Utah 19:57 UTC
1.5 5 km E of Kanarraville, Utah 14:43 UTC
2.1 16 km WNW of Enoch, Utah 02:59 UTC
1.8 15 km WNW of Enoch, Utah 21:35 UTC
2.0 15 km WNW of Enoch, Utah 20:43 UTC
1.6 16 km WNW of Enoch, Utah 14:38 UTC
1.8 15 km WNW of Enoch, Utah 08:43 UTC
2.1 16 km WNW of Enoch, Utah 04:00 UTC
2.4 18 km WSW of Minersville, Utah 05:30 UTC
2.5 16 km WNW of Enoch, Utah 18:46 UTC
2.0 15 km WNW of Enoch, Utah 05:53 UTC
1.6 14 km WNW of Enoch, Utah 15:20 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.

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.