7 km NNW of Panguitch, Utah

2019-09-12 03:07 UTC · 6.0 km deep · released about 720 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: 2019-09-12 03:07 UTC
Magnitude: M 2.9 (ml)
Depth: 6.0 km below the surface
Felt: 25 reports · strongest reported intensity IV
Measured shaking: intensity IV (ShakeMap)
Nearest: Piute County, 59 km NNE
Status: Reviewed by a seismologist

USGS · last changed by USGS 2488 days ago · we first saw it 2488 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 25 people have reported feeling it to USGS.

How big was it?

This earthquake released about 720 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.9 would have released about 32 times as much.

Mineral, Virginia 2011 M 5.8 21,000× the energy of this one
Magna, Utah 2020 M 5.7 15,000× the energy of this one
Around the size people start to feel M 3.0 1.3× the energy of this one
This earthquake M 2.9 about 720 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 37.8790, -112.4800. Map © OpenStreetMap contributors.

Nearby places

Place	Distance	Direction
Piute County, UT	59 km (37 mi)	SSW of here	earthquakes near Piute County
Iron County, UT	73 km (45 mi)	E of here	earthquakes near Iron County
Beaver County, UT	85 km (53 mi)	SE of here	earthquakes near Beaver County
Kane County, UT	89 km (55 mi)	NW of here	earthquakes near Kane County
Garfield County, UT	91 km (56 mi)	W of here	earthquakes near Garfield County
Washington County, UT	112 km (70 mi)	NE of here	earthquakes near Washington County

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

Aftershocks so far

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

2.3 14 km SW of Antimony, Utah 12:45 UTC
1.6 16 km SE of Hatch, Utah 21:17 UTC
2.3 12 km SSE of Beaver, Utah 23:45 UTC
2.0 14 km NW of Paragonah, Utah 05:49 UTC
2.3 1 km NNW of Parowan, Utah 20:21 UTC
1.9 2 km N of Parowan, Utah 10:19 UTC
1.9 9 km SW of Circleville, Utah 15:51 UTC
1.7 9 km E of Hatch, Utah 14:13 UTC
1.9 10 km SW of Circleville, Utah 13:21 UTC
2.1 10 km WSW of Circleville, Utah 08:54 UTC
1.7 20 km N of Paragonah, Utah 10:07 UTC
1.6 13 km SSE of Minersville, Utah 02:37 UTC
2.0 7 km WNW of Panguitch, Utah 12:02 UTC
1.8 9 km WNW of Panguitch, Utah 15:17 UTC
1.9 7 km NW of Circleville, Utah 05:47 UTC

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of 04:02 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.