QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1ml

Earthquake near Hoback, WY

No earthquake was likely felt in Hoback in the 24 hours to 1:30 pm MST (20:30 UTC). The last one was M 2.7, 5 km (3 mi) E, at 6:18 pm MST on 6 November 2026, estimated intensity III (weak) in town; 1 felt report to USGS. Every earthquake near Hoback

This page: a magnitude 2.1 earthquake was recorded 11 km (7 mi) west-northwest of Hoback, WY, at 12:22 pm MDT on 2 June 2020 (18:22 UTC), 1.6 km deep.

USGS: 11 km WNW of Hoback, Wyoming

12:22 pm MDT, Jun 2, 2020 · · 1.6 km deep · released about 46 lb of TNT

10 km30 km60 km120 km N Teton County 55 kmBonneville County 58 kmCaribou County 79 kmMadison County 79 kmTeton County 90 kmSublette County 102 kmFremont County 110 kmBear Lake 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
12:22 pm MDT on 2 June 2020 ()
Where
11 km (7 mi) west-northwest of Hoback, WY · earthquakes near Hoback
Magnitude
M 2.1 (ml)
Depth
1.6 km below the surface
Felt
no reports yet
Nearest
Teton County, 55 km NNW
Nearest mapped fault
Grand Valley fault, 13 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 2352 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 17 km (11 mi) from the epicentre. In Hoback, 11 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.

Likely felt in: Hoback 11 km, intensity II. Estimated for each town centre; each link is that town's own record.

How big was it?

This earthquake released about 46 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.1 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 330,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 230,000× the energy of this one
  3. Around the size people start to feel M 3.0 21× the energy of this one
  4. This earthquake M 2.1 about 46 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 2016-02-26 — about 660 times the energy of this one.

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

  1. 5.3 Southeastern Idaho · 48 km SW 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 43.3203, -110.9117. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Teton County, ID 55 km (34 mi) NNW earthquakes near Teton County
Bonneville County, ID 58 km (36 mi) W earthquakes near Bonneville County
Caribou County, ID 79 km (49 mi) SW earthquakes near Caribou County
Madison County, ID 79 km (49 mi) NW earthquakes near Madison County
Teton County, WY 90 km (56 mi) NNE earthquakes near Teton County
Sublette County, WY 102 km (63 mi) SE earthquakes near Sublette County

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

Aftershocks so far

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

  1. 2.2 Wyoming
  2. 2.8 21 km ESE of Kelly, Wyoming
  3. 2.2 21 km ESE of Kelly, Wyoming
  4. 2.3 7 km E of Alpine Northeast, Wyoming
  5. 2.2 7 km E of Alpine Northeast, Wyoming
  6. 1.6 8 km E of Alpine Northeast, Wyoming
  7. 1.9 10 km E of Alpine Northeast, Wyoming
  8. 1.5 12 km ESE of Alpine Northeast, Wyoming
  9. 2.3 21 km ESE of Kelly, Wyoming
  10. 2.0 8 km ESE of Alpine Northeast, Wyoming
  11. 1.7 10 km SW of Hoback, Wyoming
  12. 1.6 31 km WNW of Freedom, Idaho
  13. 1.7 1 km N of Kelly, Wyoming
  14. 1.5 4 km SSE of Hoback, Wyoming
  15. 1.5 25 km SE of Kelly, Wyoming

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.