QuakeIndex

Earthquake · reviewed by a seismologist

M 1.5ml

Earthquake near Nephi, UT

USGS: Utah

55 km (34 mi) SSW of Provo, UT

9:05 am MST, Nov 26, 2017 · · 6.5 km deep · released about 6.2 lb of TNT

Every earthquake near Nephi Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Utah County 42 kmSanpete County 59 kmJuab County 72 kmWasatch County 89 kmSalt Lake County 95 kmCarbon County 118 kmSevier County 119 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
9:05 am MST on 26 November 2017 ()
Where
16 km (10 mi) NW of Nephi, UT · earthquakes near Nephi
Magnitude
M 1.5 (ml)
Depth
6.5 km below the surface
Felt
no reports yet
Nearest
Utah County, 42 km NE
Nearest mapped fault
Wasatch fault, 12 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 3231 days ago

A magnitude 1.5 earthquake was recorded 16 km (10 mi) NW of Nephi, UT, at 9:05 am MST on 26 November 2017 (16:05 UTC). This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

Earthquakes near other towns within 30 km: Mona, Genola, Santaquin.

How big was it?

This earthquake released about 6.2 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,500,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,700,000× the energy of this one
  3. Around the size people start to feel M 3.0 150× the energy of this one
  4. This earthquake M 1.5 about 6.2 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 2 earthquakes of M5 or more within 50 km:

  1. 5.0 3 km WSW of Nephi, Utah · 15 km SSE of this epicentre
  2. 5.0 1 km SSW of Mount Nebo, Utah · 14 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 39.8135, -111.9612. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Utah County, UT 42 km (26 mi) NE earthquakes near Utah County
Sanpete County, UT 59 km (37 mi) SE earthquakes near Sanpete County
Juab County, UT 72 km (45 mi) W earthquakes near Juab County
Wasatch County, UT 89 km (56 mi) NE earthquakes near Wasatch County
Salt Lake County, UT 95 km (59 mi) N earthquakes near Salt Lake County
Carbon County, UT 118 km (74 mi) E earthquakes near Carbon 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. 1.5 9 km W of Levan, Utah
  2. 2.1 5 km NNE of Fountain Green, Utah
  3. 1.6 10 km NE of Fountain Green, Utah
  4. 2.0 4 km SSW of Mount Nebo, Utah
  5. 2.3 0 km NW of Mount Nebo, Utah
  6. 1.7 0 km NNE of Mount Nebo, Utah
  7. 1.6 6 km S of Fountain Green, Utah
  8. 2.0 14.8 km N of Woodland Hills, UT
  9. 1.5 6 km SW of Levan, Utah
  10. 2.0 9 km NW of Fairview, Utah
  11. 1.8 19 km WNW of Levan, Utah
  12. 2.5 20 km WNW of Levan, Utah
  13. 1.7 19 km WNW of Levan, Utah
  14. 2.5 20 km WNW of Levan, Utah
  15. 1.9 10 km NW of Fairview, 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.