Earthquake near Mesquite, NV

USGS: 30 km SSE of Scenic, Arizona

8:03 am PDT, Aug 28, 2017 · 2017-08-28 15:03 UTC · 5.2 km deep · released about 1.9 tons of TNT

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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: 8:03 am PDT on 28 August 2017 (2017-08-28 15:03 UTC)
Where: 34 km (21 mi) SSE of Mesquite, NV · earthquakes near Mesquite
Magnitude: M 3.4 (mwr)
Depth: 5.2 km below the surface
Felt: 2 reports · strongest reported intensity III
Nearest: Washington County, 87 km NNE
Status: Reviewed by a seismologist

USGS · last changed by USGS 3014 days ago · we first saw it 3014 days ago

A magnitude 3.4 earthquake was recorded 34 km (21 mi) SSE of Mesquite, NV, at 8:03 am PDT on 28 August 2017 (15:03 UTC). 2 people have reported feeling it to USGS. 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 1.9 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.4 would have released about 32 times as much.

Northridge, California 1994 M 6.7 89,000× the energy of this one
Mineral, Virginia 2011 M 5.8 4,000× the energy of this one
Magna, Utah 2020 M 5.7 2,800× the energy of this one
This earthquake M 3.4 about 1.9 tons of TNT
Around the size people start to feel M 3.0 this one released 4× 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.

For this area

No earthquake of M4 or more has been recorded within 50 km since our catalogue begins in 2016.

Before 2016, the USGS record since 1900 lists no earthquake of M5 or more within 50 km.

Since 2016: the QuakeIndex catalogue (US, M1.5+), built from the USGS FDSN event service. Before 2016: USGS ComCat, M5+ from 1900. Distances are between epicentres. This is the record, not a forecast.

Where

Map loads when it scrolls into view

Epicentre 36.5457, -113.8755. Map © OpenStreetMap contributors.

Nearby places

Place	Distance	Direction from the epicentre
Washington County, UT	87 km (54 mi)	NNE	earthquakes near Washington County
Mohave County, AZ	93 km (58 mi)	S	earthquakes near Mohave County
Clark County, NV	108 km (67 mi)	WSW	earthquakes near Clark County

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

Aftershocks so far

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

1.9 27 km S of Saint George, Utah 12:26 UTC
1.8 35 km S of Scenic, Arizona 10:58 UTC
1.6 Arizona 07:06 UTC
3.5 49 km NNE of Meadview, Arizona 09:07 UTC
3.8 47 km SSE of Scenic, Arizona 07:58 UTC
1.7 3 km NE of Beaver Dam, Arizona 06:23 UTC
1.7 35 km SSE of Saint George, Utah 01:56 UTC
2.5 51 km ESE of Littlefield, Arizona 14:24 UTC
1.6 4 km NE of Beaver Dam, Arizona 15:18 UTC
1.6 34 km S of Saint George, Utah 17:09 UTC
2.3 2 km NNE of Beaver Dam, Arizona 09:49 UTC
1.7 6 km NNE of Beaver Dam, Arizona 11:23 UTC
2.6 24 km ESE of Littlefield, Arizona 13:56 UTC
1.8 2 km NE of Beaver Dam, Arizona 14:48 UTC
1.9 10 km NE of Beaver Dam, Arizona 20:46 UTC

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of 02:16 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.