QuakeIndex

Earthquake · reviewed by a seismologist

M 2.2ml

Earthquake near Ephraim, UT

No earthquake was likely felt in Ephraim in the 24 hours to 3:43 am MST (10:43 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 2.2 earthquake was recorded 29 km (18 mi) south-southeast of Ephraim, UT, at 7:17 pm MDT on 17 July 2025 (01:17 UTC), 3.4 km deep.

USGS: 18 km E of Mayfield, Utah

7:17 pm MDT, Jul 17, 2025 · · 3.4 km deep · released about 62 lb of TNT

10 km30 km60 km120 km N Sanpete County 30 kmSevier County 49 kmEmery County 68 kmCarbon County 100 kmPiute County 102 kmWayne County 104 kmUtah County 113 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
7:17 pm MDT on 17 July 2025 ()
Where
29 km (18 mi) south-southeast of Ephraim, UT · earthquakes near Ephraim
Magnitude
M 2.2 (ml)
Depth
3.4 km below the surface
Felt
no reports yet
Nearest
Sanpete County, 30 km NNW
Nearest mapped fault
Snow Lake graben, 3 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 482 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 18 km (11 mi) from the epicentre. In Ephraim, 29 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: Manti, Centerfield, Gunnison.

How big was it?

This earthquake released about 62 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.2 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 240,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 170,000× the energy of this one
  3. Around the size people start to feel M 3.0 15× the energy of this one
  4. This earthquake M 2.2 about 62 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. 5.2 25 km SE of Salina, Utah · 33 km SSW 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 39.1100, -111.4955. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Sanpete County, UT 30 km (19 mi) NNW earthquakes near Sanpete County
Sevier County, UT 49 km (30 mi) SW earthquakes near Sevier County
Emery County, UT 68 km (42 mi) E earthquakes near Emery County
Carbon County, UT 100 km (62 mi) NE earthquakes near Carbon County
Piute County, UT 102 km (63 mi) SSW earthquakes near Piute County
Wayne County, UT 104 km (65 mi) SSE earthquakes near Wayne County

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

Aftershocks so far

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

  1. 1.6 7 km W of Centerfield, Utah
  2. 1.4 16 km WNW of Orangeville, Utah
  3. 1.3 16 km WNW of Orangeville, Utah
  4. 1.1 5 km S of Spring City, Utah
  5. 1.2 16 km SSW of Levan, Utah
  6. 0.9 15 km NNW of Fayette, Utah
  7. 1.1 2 km N of Sigurd, Utah
  8. 1.1 15 km WNW of Orangeville, Utah
  9. 1.3 17 km SSE of Levan, Utah
  10. 1.3 15 km WNW of Orangeville, Utah
  11. 0.9 14 km WNW of Orangeville, Utah
  12. 0.3 6 km SSE of Ephraim, Utah
  13. 1.2 6 km ENE of Manti, Utah
  14. 1.3 16 km WNW of Emery, Utah
  15. 1.3 9 km WNW of Manti, 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.