QuakeIndex

Earthquake · reviewed by a seismologist

M 0.3md

Earthquake near Ephraim, UT

No earthquake was likely felt in Ephraim in the 24 hours to 7:14 pm MST (02:14 UTC). The last one was M 1.9, 10 km (7 mi) S, at 2:29 am MDT on 22 June 2026, estimated intensity II (weak) in town. Every earthquake near Ephraim

This page: a magnitude 0.3 earthquake was recorded 7 km (4 mi) south-southeast of Ephraim, UT, at 3:31 am MDT on 9 October 2026 (09:31 UTC), 4.5 km deep.

USGS: 6 km SSE of Ephraim, Utah

3:31 am MDT, Oct 9, 2026 · · 4.5 km deep · released about 0.091 lb of TNT

10 km30 km60 km120 km N Sanpete County 8 kmSevier County 65 kmEmery County 80 kmUtah County 91 kmCarbon County 94 kmJuab County 114 kmPiute County 118 kmWasatch County 120 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
3:31 am MDT on 9 October 2026 ()
Where
7 km (4 mi) south-southeast of Ephraim, UT · earthquakes near Ephraim
Magnitude
M 0.3 (md)
Depth
4.5 km below the surface
Felt
no reports yet
Nearest
Sanpete County, 8 km N
Nearest mapped fault
Snow Lake graben, 10 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 34 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

At this magnitude and depth it was probably too small to be felt, even directly above it. 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: Manti, Spring City, Moroni, Gunnison, Mount Pleasant, Centerfield.

How big was it?

This earthquake released about 0.091 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 1.3 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 170,000,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 120,000,000× the energy of this one
  3. Around the size people start to feel M 3.0 10,000× the energy of this one
  4. This earthquake M 0.3 about 0.091 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 since 1900 lists no earthquake of M5 or more within 50 km.

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 39.3028, -111.5672. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Sanpete County, UT 8 km (5 mi) N earthquakes near Sanpete County
Sevier County, UT 65 km (41 mi) SSW earthquakes near Sevier County
Emery County, UT 80 km (50 mi) ESE earthquakes near Emery County
Utah County, UT 91 km (57 mi) N earthquakes near Utah County
Carbon County, UT 94 km (58 mi) ENE earthquakes near Carbon County
Juab County, UT 114 km (71 mi) WNW earthquakes near Juab County

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

Aftershocks so far

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

  1. 1.3 16 km WNW of Orangeville, Utah
  2. 1.4 16 km WNW of Orangeville, Utah
  3. 1.4 16 km WNW of Orangeville, Utah
  4. 1.6 15 km WNW of Orangeville, Utah
  5. 1.5 18 km WNW of Orangeville, Utah
  6. 1.0 16 km WNW of Orangeville, Utah
  7. 1.6 18 km NW of Orangeville, Utah
  8. 1.4 17 km WNW of Orangeville, Utah
  9. 1.6 7 km W of Centerfield, Utah
  10. 1.4 16 km WNW of Orangeville, Utah
  11. 1.3 16 km WNW of Orangeville, Utah
  12. 1.3 17 km WSW of Levan, Utah
  13. 1.9 17 km WSW of Levan, Utah
  14. 1.1 5 km S of Spring City, Utah
  15. 1.1 17 km WSW of Levan, 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.