Earthquake near Richfield, UT

No earthquake was likely felt in Richfield in the 24 hours to 8:04 pm MST (03:04 UTC). The last one was M 3.2, 34 km (21 mi) W, at 8:35 am MDT on 22 April 2026, estimated intensity II (weak) in town; 6 felt reports to USGS. Every earthquake near Richfield

This page: a magnitude 3.0 earthquake was recorded 5 km (3 mi) south-southwest of Richfield, UT, at 2:56 pm MDT on 5 April 2021 (20:56 UTC), 10 km deep. 39 people have reported feeling it to USGS.

USGS: 3 km NNW of Central Valley, Utah

2:56 pm MDT, Apr 5, 2021 · 2021-04-05 20:56 UTC · 10 km deep · released about 890 lb of TNT

Every earthquake near Richfield Felt it? Tell USGS Check my area

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: 2:56 pm MDT on 5 April 2021 (2021-04-05 20:56 UTC)
Where: 5 km (3 mi) south-southwest of Richfield, UT · earthquakes near Richfield
Magnitude: M 3.0 (ml)
Depth: 10 km below the surface
Felt: 39 reports · strongest reported intensity III
Measured shaking: intensity III (ShakeMap)
Nearest: Sevier County, 26 km E
Nearest mapped fault: Annabella graben faults, 7 km from its surface trace — near is not the same as on
Status: Reviewed by a seismologist

USGS · last changed by USGS 1979 days ago · we first saw it 1979 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

At this magnitude and depth, people at rest would likely notice it out to about 34 km (21 mi) from the epicentre. In Richfield, 5 km away, the estimate is intensity III (weak). Estimated from magnitude, depth and distance with the intensity equation USGS Did You Feel It? uses; felt reports, where there are any, are the measurement.

Likely felt in: Richfield 5 km, intensity III · Monroe 11 km, intensity III · Fillmore 32 km, intensity II · Salina 33 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 890 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.0 would have released about 32 times as much.

Northridge, California 1994 M 6.7 380,000× the energy of this one
Mineral, Virginia 2011 M 5.8 17,000× the energy of this one
Magna, Utah 2020 M 5.7 12,000× the energy of this one
This earthquake M 3.0 about 890 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.

For this area

The largest earthquake within 50 km since 2016 was M 4.0 on 2019-02-20 — about 39 times the energy of this one.

Before 2016, the USGS record lists 4 earthquakes of M5 or more within 50 km:

6.6 Near Marysvale, Utah · 36 km SW of this epicentre Nov 14, 1901
5.2 0 km SSW of Central Valley, Utah · 3 km S of this epicentre Sep 29, 1921
5.2 25 km SE of Salina, Utah · 44 km ENE of this epicentre Jan 30, 1989
5.0 10 km NE of Marysvale, Utah · 24 km S of this epicentre Oct 4, 1967

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

Nearby places

Place	Distance	Direction from the epicentre
Sevier County, UT	26 km (16 mi)	E	earthquakes near Sevier County
Piute County, UT	44 km (27 mi)	S	earthquakes near Piute County
Sanpete County, UT	85 km (53 mi)	NNE	earthquakes near Sanpete County
Millard County, UT	92 km (57 mi)	WNW	earthquakes near Millard County
Beaver County, UT	107 km (66 mi)	WSW	earthquakes near Beaver County
Wayne County, UT	110 km (69 mi)	ESE	earthquakes near Wayne County

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

Aftershocks so far

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

Counted from the QuakeIndex database, which ingests the USGS feed every 30 seconds · as of 03:04 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.