QuakeIndex

Earthquake · reviewed by a seismologist

M 3.9ml

5 km ENE of Howell, Utah

· 6.6 km deep · released about 10 tons of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Oneida County 42 kmCache County 54 kmBox Elder County 60 kmFranklin County 61 kmWeber County 74 kmDavis County 88 kmRich County 98 kmBannock County 98 kmBear Lake County 102 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 3.9 (ml)
Depth
6.6 km below the surface
Felt
183 reports · strongest reported intensity III
Measured shaking
intensity V (ShakeMap)
Nearest
Oneida County, 42 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1970 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 183 people have reported feeling it to USGS.

How big was it?

This earthquake released about 10 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.9 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 16,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 730× the energy of this one
  3. Magna, Utah 2020 M 5.7 520× the energy of this one
  4. This earthquake M 3.9 about 10 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 22× more

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 41.8157, -112.3897. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Oneida County, ID 42 km (26 mi) SSE of here earthquakes near Oneida County
Cache County, UT 54 km (34 mi) W of here earthquakes near Cache County
Box Elder County, UT 60 km (37 mi) ENE of here earthquakes near Box Elder County
Franklin County, ID 61 km (38 mi) SW of here earthquakes near Franklin County
Weber County, UT 74 km (46 mi) NW of here earthquakes near Weber County
Davis County, UT 88 km (55 mi) N of here earthquakes near Davis County

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

Aftershocks so far

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

  1. 1.8 12 km S of Snowville, Utah
  2. 2.5 7 km SE of Howell, Utah
  3. 1.6 20 km WSW of Corinne, Utah
  4. 1.9 19 km SSW of Thatcher, Utah
  5. 1.6 12 km ESE of Snowville, Utah
  6. 2.0 12 km ESE of Snowville, Utah
  7. 1.5 13 km ESE of Snowville, Utah
  8. 1.8 11 km ENE of Snowville, Utah
  9. 2.1 13 km S of Snowville, Utah
  10. 2.8 13 km S of Snowville, Utah
  11. 1.5 33 km SSW of Snowville, Utah
  12. 1.7 12 km SE of Snowville, Utah
  13. 1.5 20 km WSW of Corinne, Utah
  14. 1.6 20 km WSW of Corinne, Utah
  15. 1.8 11 km SSE of Snowville, 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.