17 km SSE of Saint George, Utah

2019-10-01 14:27 UTC · 2.3 km deep · released about 12 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: 2019-10-01 14:27 UTC
Magnitude: M 1.7 (ml)
Depth: 2.3 km below the surface
Felt: no reports yet
Nearest: Washington County, 34 km N
Status: Reviewed by a seismologist

USGS · last changed by USGS 2553 days ago · we first saw it 2553 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 12 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.7 would have released about 32 times as much.

Mineral, Virginia 2011 M 5.8 1,300,000× the energy of this one
Magna, Utah 2020 M 5.7 900,000× the energy of this one
Around the size people start to feel M 3.0 80× the energy of this one
This earthquake M 1.7 about 12 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 36.9547, -113.5253. Map © OpenStreetMap contributors.

Nearby places

Place	Distance	Direction
Washington County, UT	34 km (21 mi)	S of here	earthquakes near Washington County
Iron County, UT	108 km (67 mi)	S of here	earthquakes near Iron County
Lincoln County, NV	140 km (87 mi)	ESE of here	earthquakes near Lincoln County

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

Aftershocks so far

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

1.6 14 km WSW of Dammeron Valley, Utah 07:09 UTC
1.8 9 km SSW of Saint George, Utah 03:28 UTC
2.2 Nevada 05:33 UTC
1.6 5 km NNE of Mesquite, Nevada 17:26 UTC
2.4 Arizona 07:29 UTC
1.6 37 km S of Saint George, Utah 16:37 UTC
2.3 10 km SW of Centennial Park, Arizona 13:39 UTC
1.6 46 km SSE of Saint George, Utah 22:01 UTC
4.4 45 km ESE of Littlefield, Arizona 21:18 UTC
2.1 5 km NNW of Hildale, Utah 03:57 UTC
1.7 14 km WSW of Santa Clara, Utah 12:57 UTC
1.5 3 km NW of Leeds, Utah 17:33 UTC
2.2 27 km S of Saint George, Utah 01:46 UTC
1.6 20 km S of Centennial Park, Arizona 18:01 UTC
1.9 53 km ESE of Scenic, Arizona 21:40 UTC

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of 18:10 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.