19 km WSW of Enterprise, Utah

2016-01-15 22:37 UTC · 1.0 km deep · released about 35 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: 2016-01-15 22:37 UTC
Magnitude: M 4.2 (ml)
Depth: 1.0 km below the surface
Felt: 10 reports · strongest reported intensity III
Measured shaking: intensity V (ShakeMap)
USGS impact alert: green
Nearest: Washington County, 47 km SE
Status: Reviewed by a seismologist

USGS · last changed by USGS 1971 days ago · we first saw it 1971 days ago

This was a light earthquake. It is usually felt clearly nearby and can rattle windows and dishes, but damage is uncommon. 10 people have reported feeling it to USGS.

How big was it?

This earthquake released about 35 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 5.2 would have released about 32 times as much.

Northridge, California 1994 M 6.7 4,900× the energy of this one
Mineral, Virginia 2011 M 5.8 220× the energy of this one
Magna, Utah 2020 M 5.7 150× the energy of this one
This earthquake M 4.2 about 35 tons of TNT
Around the size people start to feel M 3.0 this one released 72× 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 37.5122, -113.9217. Map © OpenStreetMap contributors.

Nearby places

Place	Distance	Direction
Washington County, UT	47 km (29 mi)	NW of here	earthquakes near Washington County
Iron County, UT	70 km (43 mi)	SW of here	earthquakes near Iron County
Lincoln County, NV	84 km (52 mi)	E of here	earthquakes near Lincoln County
Beaver County, UT	111 km (69 mi)	SSW of here	earthquakes near Beaver County

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

Aftershocks so far

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

2.9 18 km SSE of Caliente, Nevada 07:39 UTC
1.6 33 km W of Veyo, Utah 21:03 UTC
1.8 10 km WNW of Central, Utah 22:40 UTC
1.6 11 km SSW of Enterprise, Utah 00:37 UTC
1.7 10 km NW of Central, Utah 02:59 UTC
1.5 15 km WNW of Veyo, Utah 18:55 UTC
1.5 34 km SSE of Caliente, Nevada 05:18 UTC
1.5 5 km SE of Enterprise, Utah 06:41 UTC
1.8 10 km ESE of Enterprise, Utah 01:50 UTC
1.8 7 km SE of Enterprise, Utah 19:40 UTC
1.8 4 km SE of Enterprise, Utah 10:24 UTC
2.6 0 km NNE of Enterprise, Utah 20:40 UTC
1.8 6 km SE of Enterprise, Utah 20:33 UTC
1.6 32 km WNW of Veyo, Utah 07:45 UTC
1.9 7 km ESE of Enterprise, Utah 05:10 UTC

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of 13:02 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.