3 km NE of Cedar City, Utah

2024-12-11 23:00 UTC · 1.1 km deep · released about 16 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: 2024-12-11 23:00 UTC
Magnitude: M 1.8 (md)
Depth: 1.1 km below the surface
Felt: no reports yet
Nearest: Iron County, 34 km NW
Status: Reviewed by a seismologist

USGS · last changed by USGS 654 days ago · we first saw it 654 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 16 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.8 would have released about 32 times as much.

Mineral, Virginia 2011 M 5.8 930,000× the energy of this one
Magna, Utah 2020 M 5.7 660,000× the energy of this one
Around the size people start to feel M 3.0 59× the energy of this one
This earthquake M 1.8 about 16 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 37.6953, -113.0318. Map © OpenStreetMap contributors.

Nearby places

Place	Distance	Direction
Iron County, UT	34 km (21 mi)	SE of here	earthquakes near Iron County
Washington County, UT	63 km (39 mi)	NE of here	earthquakes near Washington County
Beaver County, UT	76 km (47 mi)	SSE of here	earthquakes near Beaver County
Piute County, UT	106 km (66 mi)	SW of here	earthquakes near Piute County
Kane County, UT	117 km (73 mi)	WNW of here	earthquakes near Kane County
Sevier County, UT	158 km (98 mi)	SW of here	earthquakes near Sevier County

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

Aftershocks so far

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

1.5 12 km ENE of Kanarraville, Utah 12:16 UTC
2.0 25 km S of Brian Head, Utah 01:28 UTC
2.0 8 km WNW of Panguitch, Utah 15:16 UTC
1.5 16 km NW of Parowan, Utah 13:36 UTC
1.5 13 km E of Kanarraville, Utah 21:26 UTC
1.8 11 km ENE of Kanarraville, Utah 21:24 UTC
2.0 12 km SSE of Cedar City, Utah 19:21 UTC
2.3 11 km ENE of Kanarraville, Utah 18:51 UTC
1.6 11 km ENE of Kanarraville, Utah 18:38 UTC
2.5 4 km NW of Cedar City, Utah 20:58 UTC
1.9 12 km ENE of Kanarraville, Utah 10:43 UTC
1.8 9 km NW of Orderville, Utah 07:30 UTC
1.6 9 km NW of Orderville, Utah 21:50 UTC
1.6 1 km SSW of Newcastle, Utah 15:46 UTC
1.7 11 km ENE of Kanarraville, Utah 16:36 UTC

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of 17:28 UTC. QuakeIndex does not forecast aftershocks. When USGS issues an operational aftershock forecast it appears on the USGS event page.

For this area

The largest earthquake within 50 km in our catalogue was M 4.5 on 2024-07-29 — it released about 9,400 times the energy of this one.

From the QuakeIndex catalogue, built from the USGS FDSN event service.

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.