QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7ml

Earthquake near South Park, WY

No earthquake was likely felt in South Park in the 24 hours to 5:30 am MST (12:30 UTC). The last one was M 2.7, 17 km (11 mi) SSE, at 6:18 pm MST on 6 November 2026, estimated intensity II (weak) in town; 1 felt report to USGS. Every earthquake near South Park

This page: a magnitude 1.7 earthquake was recorded 8 km (5 mi) southeast of South Park, WY, at 10:07 pm MDT on 2 April 2024 (04:07 UTC), 12 km deep.

USGS: 7 km SE of South Park, Wyoming

10:07 pm MDT, Apr 2, 2024 · · 12 km deep · released about 11 lb of TNT

10 km30 km60 km120 km N Teton County 58 kmBonneville County 72 kmTeton County 80 kmMadison County 88 kmCaribou County 92 kmSublette County 94 kmFremont County 112 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
10:07 pm MDT on 2 April 2024 ()
Where
8 km (5 mi) southeast of South Park, WY · earthquakes near South Park
Magnitude
M 1.7 (ml)
Depth
12 km below the surface
Felt
no reports yet
Nearest
Teton County, 58 km NW
Nearest mapped fault
Teton fault, 23 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 952 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 4 km (2 mi) from the epicentre. In South Park, 8 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: Rafter J Ranch, Hoback, Jackson, Wilson, Moose Wilson Road.

How big was it?

This earthquake released about 11 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 1,400,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 970,000× the energy of this one
  3. Around the size people start to feel M 3.0 86× the energy of this one
  4. This earthquake M 1.7 about 11 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 4.8 on 2016-08-27 — about 43,000 times the energy of this one.

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

  1. 5.0 20 km ESE of Kelly, Wyoming · 36 km NE 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 43.3658, -110.7357. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Teton County, ID 58 km (36 mi) NW earthquakes near Teton County
Bonneville County, ID 72 km (45 mi) W earthquakes near Bonneville County
Teton County, WY 80 km (50 mi) NNE earthquakes near Teton County
Madison County, ID 88 km (55 mi) WNW earthquakes near Madison County
Caribou County, ID 92 km (57 mi) SW earthquakes near Caribou County
Sublette County, WY 94 km (58 mi) SE earthquakes near Sublette County

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

Aftershocks so far

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

  1. 2.8 5 km NE of Star Valley Ranch, Wyoming
  2. 1.7 5 km N of Alpine Northeast, Wyoming
  3. 2.2 12 km NNW of Alpine Northeast, Wyoming
  4. 2.1 8 km S of Kelly, Wyoming
  5. 1.7 7 km S of Kelly, Wyoming
  6. 1.9 7 km S of Kelly, Wyoming
  7. 1.8 7 km S of Kelly, Wyoming
  8. 1.7 19 km NW of Bondurant, Wyoming
  9. 2.4 15 km ESE of Kelly, Wyoming
  10. 2.4 11 km E of Jackson, Wyoming
  11. 2.0 16 km ENE of Etna, Wyoming
  12. 2.2 15 km SSE of Kelly, Wyoming
  13. 2.9 14 km E of Jackson, Wyoming
  14. 2.9 14 km E of Jackson, Wyoming
  15. 3.9 15 km E of Jackson, 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.