QuakeIndex

Earthquake · reviewed by a seismologist

M 2.0ml

Earthquake near Monroe, UT

No earthquake was likely felt in Monroe in the 24 hours to 1:14 am MST (08:14 UTC). The last one was M 3.3, 41 km (25 mi) SSW, at 10:44 pm MDT on 30 October 2026, estimated intensity II (weak) in town; 5 felt reports to USGS. Every earthquake near Monroe

This page: a magnitude 2.0 earthquake was recorded 7 km (4 mi) east-southeast of Monroe, UT, at 2:54 am MDT on 8 April 2018 (08:54 UTC), 9.7 km deep.

USGS: 7 km ESE of Monroe, Utah

2:54 am MDT, Apr 8, 2018 · · 9.7 km deep · released about 26 lb of TNT

Every earthquake near Monroe Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Sevier County 26 kmPiute County 31 kmSanpete County 95 kmWayne County 100 kmGarfield County 100 kmMillard County 102 kmBeaver County 107 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
2:54 am MDT on 8 April 2018 ()
Where
7 km (4 mi) east-southeast of Monroe, UT · earthquakes near Monroe
Magnitude
M 2.0 (ml)
Depth
9.7 km below the surface
Felt
no reports yet
Nearest
Sevier County, 26 km NE
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 · we first saw it 3140 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

At this magnitude and depth, people at rest would likely notice it out to about 12 km (7 mi) from the epicentre. In Monroe, 7 km away, the estimate is intensity II (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: Monroe 7 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 26 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.0 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 580,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 410,000× the energy of this one
  3. Around the size people start to feel M 3.0 36× the energy of this one
  4. This earthquake M 2.0 about 26 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 4 earthquakes of M5 or more within 50 km:

  1. 6.6 Near Marysvale, Utah · 33 km WSW of this epicentre
  2. 5.2 0 km SSW of Central Valley, Utah · 12 km NNW of this epicentre
  3. 5.2 25 km SE of Salina, Utah · 45 km NE of this epicentre
  4. 5.0 10 km NE of Marysvale, Utah · 13 km SW 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 38.6052, -112.0455. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Sevier County, UT 26 km (16 mi) NE earthquakes near Sevier County
Piute County, UT 31 km (19 mi) SSW earthquakes near Piute County
Sanpete County, UT 95 km (59 mi) NNE earthquakes near Sanpete County
Wayne County, UT 100 km (62 mi) ESE earthquakes near Wayne County
Garfield County, UT 100 km (62 mi) SSE earthquakes near Garfield County
Millard County, UT 102 km (63 mi) WNW earthquakes near Millard County

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

Aftershocks so far

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

  1. 3.3 9 km SSW of Kanosh, Utah
  2. 1.7 9 km SSW of Kanosh, Utah
  3. 1.5 30 km SW of Emery, Utah
  4. 1.6 6 km W of Koosharem, Utah
  5. 1.8 5 km SSW of Joseph, Utah
  6. 1.5 7 km SSW of Joseph, Utah
  7. 1.8 7 km SSW of Joseph, Utah
  8. 1.5 8 km N of Marysvale, Utah
  9. 1.6 8 km NNW of Marysvale, Utah
  10. 1.9 8 km SW of Joseph, Utah
  11. 1.9 5 km SW of Joseph, Utah
  12. 1.5 8 km NE of Fremont, Utah
  13. 2.6 5 km SW of Joseph, Utah
  14. 1.8 7 km SSW of Joseph, Utah
  15. 1.8 8 km SW of Joseph, 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.