QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7ml

Earthquake near Nephi, UT

No earthquake was likely felt in Nephi in the 24 hours to 3:30 am MST (10:30 UTC). The last one was M 2.3, 10 km (6 mi) SW, at 10:00 pm MST on 1 January 2026, estimated intensity II (weak) in town. Every earthquake near Nephi

This page: a magnitude 1.7 earthquake was recorded 22 km (13 mi) west-southwest of Nephi, UT, at 9:46 am MDT on 16 May 2019 (15:46 UTC), 11 km deep.

USGS: 21 km WNW of Levan, Utah

9:46 am MDT, May 16, 2019 · · 11 km deep · released about 11 lb of TNT

10 km30 km60 km120 km N Sanpete County 53 kmJuab County 62 kmUtah County 63 kmSevier County 103 kmWasatch County 109 kmSalt Lake County 114 kmMillard 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
9:46 am MDT on 16 May 2019 ()
Where
22 km (13 mi) west-southwest of Nephi, UT · earthquakes near Nephi
Magnitude
M 1.7 (ml)
Depth
11 km below the surface
Felt
no reports yet
Nearest
Sanpete County, 53 km SE
Nearest mapped fault
Little Valley faults, 17 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 2738 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 7 km (4 mi) from the epicentre. In Nephi, 22 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.

Earthquakes near other towns within 30 km: Mona.

How big was it?

This earthquake released about 11 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,300,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 930,000× the energy of this one
  3. Around the size people start to feel M 3.0 83× the energy of this one
  4. This earthquake M 1.7 about 11 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 · 18 km ENE of this epicentre
  2. 5.0 1 km SSW of Mount Nebo, Utah · 33 km NNE 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 39.6520, -112.0760. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Sanpete County, UT 53 km (33 mi) SE earthquakes near Sanpete County
Juab County, UT 62 km (38 mi) W earthquakes near Juab County
Utah County, UT 63 km (39 mi) NNE earthquakes near Utah County
Sevier County, UT 103 km (64 mi) SSE earthquakes near Sevier County
Wasatch County, UT 109 km (68 mi) NE earthquakes near Wasatch County
Salt Lake County, UT 114 km (71 mi) N earthquakes near Salt Lake County

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

Aftershocks so far

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

  1. 3.2 16 km SSW of Levan, Utah
  2. 2.3 17 km SSW of Levan, Utah
  3. 1.6 13 km W of Mona, Utah
  4. 1.7 17 km SSW of Levan, Utah
  5. 2.1 16 km SSW of Levan, Utah
  6. 1.7 15 km SSW of Levan, Utah
  7. 1.5 9 km W of Levan, Utah
  8. 2.1 5 km NNE of Fountain Green, Utah
  9. 1.6 10 km NE of Fountain Green, Utah
  10. 2.0 4 km SSW of Mount Nebo, Utah
  11. 2.3 0 km NW of Mount Nebo, Utah
  12. 1.7 0 km NNE of Mount Nebo, Utah
  13. 1.6 6 km S of Fountain Green, Utah
  14. 1.5 11 km NNE of Scipio, Utah
  15. 2.0 14.8 km N of Woodland Hills, UT

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.