QuakeIndex

Earthquake · reviewed by a seismologist

M 2.0ml

Earthquake near Ogden, UT

USGS: 0 km W of Huntsville, Utah

55 km (34 mi) NNE of Salt Lake City, UT · 17 km (10 mi) ENE of Ogden, UT

4:10 pm MDT, Apr 6, 2018 · · 6.2 km deep · released about 27 lb of TNT

Every earthquake near Ogden Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Weber County 9 kmMorgan County 25 kmDavis County 44 kmCache County 53 kmRich County 60 kmSalt Lake County 67 kmSummit County 80 kmUinta County 102 kmFranklin 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
4:10 pm MDT on 6 April 2018 ()
Where
17 km (11 mi) ENE of Ogden, UT · earthquakes near Ogden
Magnitude
M 2.0 (ml)
Depth
6.2 km below the surface
Felt
no reports yet
Nearest
Weber County, 9 km W
Nearest mapped fault
Morgan fault, 13 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 3099 days ago

A magnitude 2.0 earthquake was recorded 17 km (11 mi) ENE of Ogden, UT, at 4:10 pm MDT on 6 April 2018 (22:10 UTC). This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

Earthquakes near other towns within 30 km: Wolf Creek, Liberty, Mountain Green, North Ogden, Uintah, Harrisville.

How big was it?

This earthquake released about 27 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 5.8 560,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 390,000× the energy of this one
  3. Around the size people start to feel M 3.0 35× the energy of this one
  4. This earthquake M 2.0 about 27 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. 5.5 26 km E of Avon, Utah · 35 km NE 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 41.2603, -111.7745. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Weber County, UT 9 km (5 mi) W earthquakes near Weber County
Morgan County, UT 25 km (16 mi) SE earthquakes near Morgan County
Davis County, UT 44 km (27 mi) SW earthquakes near Davis County
Cache County, UT 53 km (33 mi) N earthquakes near Cache County
Rich County, UT 60 km (38 mi) NE earthquakes near Rich County
Salt Lake County, UT 67 km (42 mi) S earthquakes near Salt Lake 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. 1.5 12 km NW of Plain City, Utah
  2. 2.4 12 km SE of Avon, Utah
  3. 2.5 10 km SE of Avon, Utah
  4. 2.0 11 km ESE of Millville, Utah
  5. 1.6 9 km ENE of Huntsville, Utah
  6. 1.6 8 km E of Avon, Utah
  7. 2.0 7 km ESE of Morgan, Utah
  8. 1.5 13 km ESE of Millville, Utah
  9. 1.6 9 km S of Avon, Utah
  10. 2.3 0 km NE of Echo, Utah
  11. 1.9 0 km NNE of Echo, Utah
  12. 2.1 0 km NE of Echo, Utah
  13. 2.3 6 km W of North Salt Lake, Utah
  14. 2.3 6 km W of North Salt Lake, Utah
  15. 2.0 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.