QuakeIndex

Earthquake · reviewed by a seismologist

M 1.2ml

Earthquake near Milford, UT

USGS: 13 km NE of Milford, Utah

4:15 am MDT, Sep 28, 2026 · · 4.3 km deep · released about 1.7 lb of TNT

10 km30 km60 km120 km N Beaver County 33 kmMillard County 56 kmPiute County 69 kmIron County 74 kmSevier County 99 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
4:15 am MDT on 28 September 2026 ()
Where
14 km (9 mi) NE of Milford, UT · earthquakes near Milford
Magnitude
M 1.2 (ml)
Depth
4.3 km below the surface
Felt
no reports yet
Nearest
Beaver County, 33 km WSW
Nearest mapped fault
Mineral Mountains (west side) faults, 7 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 4 days ago

A magnitude 1.2 earthquake was recorded 14 km (9 mi) NE of Milford, UT, at 4:15 am MDT on 28 September 2026 (10:15 UTC). This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

How big was it?

This earthquake released about 1.7 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.2 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 9,100,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 6,500,000× the energy of this one
  3. Around the size people start to feel M 3.0 580× the energy of this one
  4. This earthquake M 1.2 about 1.7 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

The largest earthquake within 50 km since 2016 was M 4.1 on 2019-04-14 — about 22,000 times the energy of this one.

Before 2016, the USGS record lists one earthquake of M5 or more within 50 km:

  1. 6.6 Near Marysvale, Utah · 44 km E 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 38.4882, -112.9003. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Beaver County, UT 33 km (20 mi) WSW earthquakes near Beaver County
Millard County, UT 56 km (35 mi) NNW earthquakes near Millard County
Piute County, UT 69 km (43 mi) ESE earthquakes near Piute County
Iron County, UT 74 km (46 mi) SSW earthquakes near Iron County
Sevier County, UT 99 km (61 mi) ENE earthquakes near Sevier County
Sanpete County, UT 151 km (94 mi) NE earthquakes near Sanpete County

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

Aftershocks so far

1 earthquake has been recorded within 50 km since this one.

  1. 1.7 14 km NE of Milford, 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.