QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1ml

Earthquake near Gunnison, UT

USGS: 12 km NW of Fayette, Utah

10:14 am MDT, Aug 5, 2020 · · 6.9 km deep · released about 43 lb of TNT

10 km30 km60 km120 km N Sanpete County 34 kmSevier County 63 kmJuab County 84 kmUtah County 95 kmMillard County 108 kmPiute County 108 kmEmery County 112 km
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
10:14 am MDT on 5 August 2020 ()
Where
21 km (13 mi) NW of Gunnison, UT · earthquakes near Gunnison
Magnitude
M 2.1 (ml)
Depth
6.9 km below the surface
Felt
no reports yet
Nearest
Sanpete County, 34 km ENE
Nearest mapped fault
Wasatch fault, 6 km from its surface trace — near is not the same as on
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2249 days ago

A magnitude 2.1 earthquake was recorded 21 km (13 mi) NW of Gunnison, UT, at 10:14 am MDT on 5 August 2020 (16:14 UTC). This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

Earthquakes near other towns within 30 km: Centerfield, Manti.

How big was it?

This earthquake released about 43 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.1 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 350,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 250,000× the energy of this one
  3. Around the size people start to feel M 3.0 22× the energy of this one
  4. This earthquake M 2.1 about 43 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

No earthquake of M4 or more has been recorded within 50 km since our catalogue begins in 2016.

Before 2016, the USGS record lists one earthquake of M5 or more within 50 km:

  1. 5.0 3 km WSW of Nephi, Utah · 45 km N of this epicentre

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

Epicentre 39.3007, -111.9660. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Sanpete County, UT 34 km (21 mi) ENE earthquakes near Sanpete County
Sevier County, UT 63 km (39 mi) SSE earthquakes near Sevier County
Juab County, UT 84 km (52 mi) WNW earthquakes near Juab County
Utah County, UT 95 km (59 mi) NNE earthquakes near Utah County
Millard County, UT 108 km (67 mi) WSW earthquakes near Millard County
Piute County, UT 108 km (67 mi) S earthquakes near Piute County

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

Aftershocks so far

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

  1. 2.1 15 km NE of Leamington, Utah
  2. 1.7 10 km NW of Fayette, Utah
  3. 1.5 15 km S of Levan, Utah
  4. 2.3 8 km NW of Fayette, Utah
  5. 1.8 8 km NW of Fayette, Utah
  6. 2.1 9 km WSW of Levan, Utah
  7. 1.6 12 km SW of Fayette, Utah
  8. 1.6 7 km N of Redmond, Utah
  9. 1.6 15 km ESE of Fillmore, Utah
  10. 1.5 8 km NW of Fayette, Utah
  11. 1.6 17 km WNW of Levan, Utah
  12. 1.5 5 km ENE of Mayfield, Utah
  13. 1.6 12 km WSW of Levan, Utah
  14. 2.4 16 km SSW of Levan, Utah
  15. 1.9 15 km SSW of Levan, Utah

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

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.