1 km NW of Kenilworth, Utah

2024-12-20 13:41 UTC · -3.4 km deep · released about 13 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: 2024-12-20 13:41 UTC
Magnitude: M 1.8 (md)
Depth: -3.4 km below the surface
Felt: no reports yet
Nearest: Carbon County, 20 km E
Status: Reviewed by a seismologist

USGS · last changed by USGS 646 days ago · we first saw it 646 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 13 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.

Mineral, Virginia 2011 M 5.8 1,200,000× the energy of this one
Magna, Utah 2020 M 5.7 840,000× the energy of this one
Around the size people start to feel M 3.0 75× the energy of this one
This earthquake M 1.8 about 13 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 39.6997, -110.8210. Map © OpenStreetMap contributors.

Nearby places

Place	Distance	Direction
Carbon County, UT	20 km (12 mi)	W of here	earthquakes near Carbon County
Duchesne County, UT	74 km (46 mi)	SSW of here	earthquakes near Duchesne County
Sanpete County, UT	74 km (46 mi)	ENE of here	earthquakes near Sanpete County
Wasatch County, UT	76 km (47 mi)	SSE of here	earthquakes near Wasatch County
Emery County, UT	77 km (48 mi)	N of here	earthquakes near Emery County
Utah County, UT	86 km (54 mi)	ESE of here	earthquakes near Utah County

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

Aftershocks so far

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

1.8 10 km NW of Helper, Utah 12:22 UTC
1.9 6 km S of Clear Creek, Utah 12:01 UTC
1.8 1 km NE of Helper, Utah 21:46 UTC
1.9 2 km NW of Kenilworth, Utah 21:14 UTC
2.2 1 km NW of Kenilworth, Utah 13:37 UTC
1.8 1 km N of Helper, Utah 06:17 UTC
1.5 1 km N of Kenilworth, Utah 01:13 UTC
1.6 11 km NW of Helper, Utah 19:10 UTC
1.6 2 km NW of Kenilworth, Utah 15:03 UTC
1.6 1 km NNW of Kenilworth, Utah 03:03 UTC
2.2 3 km NNE of Helper, Utah 00:22 UTC
1.9 2 km NW of Kenilworth, Utah 08:46 UTC
1.8 2 km NNW of Kenilworth, Utah 18:01 UTC
1.8 2 km WNW of Kenilworth, Utah 14:35 UTC
1.6 2 km NW of Kenilworth, Utah 09:51 UTC

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of 19:23 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.