QuakeIndex

Earthquake · reviewed by a seismologist

M 2.8ml

8 km SSW of Joseph, Utah

· 3.3 km deep · released about 550 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Piute County 28 kmSevier County 44 kmMillard County 87 kmBeaver County 88 kmSanpete County 108 kmGarfield County 108 kmWayne County 116 kmIron County 117 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
Magnitude
M 2.8 (ml)
Depth
3.3 km below the surface
Felt
4 reports · strongest reported intensity II
Measured shaking
intensity IV (ShakeMap)
Nearest
Piute County, 28 km SSE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2773 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 4 people have reported feeling it to USGS.

How big was it?

This earthquake released about 550 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.8 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 28,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 19,000× the energy of this one
  3. Around the size people start to feel M 3.0 1.7× the energy of this one
  4. This earthquake M 2.8 about 550 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

Epicentre 38.5645, -112.2645. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Piute County, UT 28 km (17 mi) NNW of here earthquakes near Piute County
Sevier County, UT 44 km (27 mi) WSW of here earthquakes near Sevier County
Millard County, UT 87 km (54 mi) ESE of here earthquakes near Millard County
Beaver County, UT 88 km (55 mi) ENE of here earthquakes near Beaver County
Sanpete County, UT 108 km (67 mi) SSW of here earthquakes near Sanpete County
Garfield County, UT 108 km (67 mi) NW of here earthquakes near Garfield County

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

Aftershocks so far

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

  1. 1.8 6 km N of Joseph, Utah
  2. 1.5 23 km SSW of Kanosh, Utah
  3. 1.7 30 km W of Kanosh, Utah
  4. 1.9 29 km WSW of Kanosh, Utah
  5. 1.5 27 km WSW of Kanosh, Utah
  6. 1.8 30 km W of Kanosh, Utah
  7. 1.7 28 km W of Kanosh, Utah
  8. 2.1 28 km WSW of Kanosh, Utah
  9. 1.9 29 km W of Kanosh, Utah
  10. 1.9 26 km WSW of Kanosh, Utah
  11. 2.7 27 km WSW of Kanosh, Utah
  12. 1.6 29 km W of Kanosh, Utah
  13. 2.2 29 km WSW of Kanosh, Utah
  14. 3.1 29 km WSW of Kanosh, Utah
  15. 4.1 28 km W of Kanosh, 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.