10 km N of Moccasin, Arizona

2020-06-24 23:33 UTC · 21 km deep · released about 1,400 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: 2020-06-24 23:33 UTC
Magnitude: M 3.1 (ml)
Depth: 21 km below the surface
Felt: 32 reports · strongest reported intensity III
Nearest: Washington County, 72 km WNW
Nearest mapped fault: Sevier/Toroweap fault, 2 km from its surface trace — near is not the same as on
Status: Reviewed by a seismologist

USGS · last changed by USGS 2215 days ago · we first saw it 2215 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 32 people have reported feeling it to USGS.

How big was it?

This earthquake released about 1,400 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.1 would have released about 32 times as much.

Northridge, California 1994 M 6.7 240,000× the energy of this one
Mineral, Virginia 2011 M 5.8 11,000× the energy of this one
Magna, Utah 2020 M 5.7 7,700× the energy of this one
This earthquake M 3.1 about 1,400 lb of TNT
Around the size people start to feel M 3.0 this one released 1.5× 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 37.0002, -112.7440. Map © OpenStreetMap contributors.

Nearby places

Place	Distance	Direction
Washington County, UT	72 km (45 mi)	ESE of here	earthquakes near Washington County
Kane County, UT	88 km (55 mi)	WSW of here	earthquakes near Kane County
Iron County, UT	113 km (70 mi)	SSE of here	earthquakes near Iron County
Garfield County, UT	147 km (91 mi)	SW of here	earthquakes near Garfield County

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

Aftershocks so far

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

1.9 22 km ESE of Fredonia, Arizona 21:06 UTC
1.9 3 km NE of Hildale, Utah 22:38 UTC
1.9 14 km E of Fredonia, Arizona 20:36 UTC
1.7 11 km ENE of Hildale, Utah 01:26 UTC
2.8 37 km SSE of Kaibab, Arizona 12:56 UTC
2.0 20 km ESE of Kanab, Utah 20:28 UTC
1.7 12 km SSE of Fredonia, Arizona 20:44 UTC
2.1 8 km E of Kaibab, Arizona 07:18 UTC
2.7 10 km N of Springdale, Utah 02:06 UTC
1.6 10 km SSW of Kaibab, Arizona 21:05 UTC
1.8 5 km N of Hildale, Utah 11:47 UTC
2.1 16 km NE of Hildale, Utah 17:05 UTC
2.1 10 km WSW of Alton, Utah 19:14 UTC
1.7 21 km SE of Fredonia, Arizona 03:08 UTC
1.6 10 km WNW of Glendale, Utah 19:43 UTC

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of 05:56 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.