QuakeIndex

Earthquake · reviewed by a seismologist

M 2.5ml

Earthquake near Heber City, UT

No earthquake was likely felt in Heber City in the 24 hours to 9:00 am MST (16:00 UTC). The last one was M 1.8, 6 km (3 mi) E, at 2:36 am MDT on 29 June 2026, estimated intensity II (weak) in town. Every earthquake near Heber City

This page: a magnitude 2.5 earthquake was recorded 38 km (23 mi) east-southeast of Heber City, UT, at 1:55 pm MDT on 9 June 2021 (19:55 UTC), 8.1 km deep. 1 person has reported feeling it to USGS.

USGS: 18 km E of Independence, Utah

91 km (56 mi) ESE of Salt Lake City, UT · 52 km (32 mi) E of Provo, UT

1:55 pm MDT, Jun 9, 2021 · · 8.1 km deep · released about 190 lb of TNT

10 km30 km60 km120 km N Wasatch County 11 kmDuchesne County 52 kmUtah County 58 kmSummit County 61 kmCarbon County 82 kmSalt Lake County 84 kmMorgan County 97 kmUinta County 114 kmSanpete County 115 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
1:55 pm MDT on 9 June 2021 ()
Where
38 km (23 mi) east-southeast of Heber City, UT · earthquakes near Heber City
Magnitude
M 2.5 (ml)
Depth
8.1 km below the surface
Felt
1 report · strongest reported intensity II
Nearest
Wasatch County, 11 km W
Nearest mapped fault
Strawberry fault, 11 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 1907 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage.

At this magnitude and depth, people at rest would likely notice it out to about 21 km (13 mi) from the epicentre. In Heber City, 38 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.

How big was it?

This earthquake released about 190 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 78,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 55,000× the energy of this one
  3. Around the size people start to feel M 3.0 4.9× the energy of this one
  4. This earthquake M 2.5 about 190 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 4.0 on 2016-05-25 — about 170 times the energy of this one.

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

  1. 5.3 23 km NW of Altamont, Utah · 50 km ENE 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 40.3223, -111.0380. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Wasatch County, UT 11 km (7 mi) W earthquakes near Wasatch County
Duchesne County, UT 52 km (32 mi) E earthquakes near Duchesne County
Utah County, UT 58 km (36 mi) WSW earthquakes near Utah County
Summit County, UT 61 km (38 mi) N earthquakes near Summit County
Carbon County, UT 82 km (51 mi) SSE earthquakes near Carbon County
Salt Lake County, UT 84 km (52 mi) WNW earthquakes near Salt Lake County

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

Aftershocks so far

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

  1. 1.2 18 km N of Scofield, Utah
  2. 1.1 7 km SSW of Wallsburg, Utah
  3. 2.2 14 km E of Independence, Utah
  4. 1.6 21 km W of Tabiona, Utah
  5. 1.6 8 km E of Independence, Utah
  6. 1.6 19 km E of Independence, Utah
  7. 2.3 19 km E of Independence, Utah
  8. 2.4 19 km E of Independence, Utah
  9. 1.9 20 km E of Independence, Utah
  10. 1.8 5 km E of Heber City, Utah
  11. 1.9 26 km S of Independence, Utah
  12. 2.5 28 km NNW of Tabiona, Utah
  13. 1.9 24 km SSE of Independence, Utah
  14. 2.4 24 km SSE of Independence, Utah
  15. 1.8 25 km SSE of Independence, 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.