QuakeIndex

Earthquake · reviewed by a seismologist

M 2.7ml

57 km NE of Kelly, Wyoming

Yes. A magnitude 2.7 earthquake was recorded 57 km NE of Kelly, Wyoming, at 1:43 am MDT on 7 September 2026 (07:43 UTC), 7.3 km deep.

· 7.3 km deep · released about 310 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Teton County 16 kmPark County 70 kmTeton County 85 kmFremont County 102 kmMadison County 118 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
Magnitude
M 2.7 (ml)
Depth
7.3 km below the surface
Felt
no reports yet
Nearest
Teton County, 16 km W
Nearest mapped fault
Buffalo Fork 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 64 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 23 km (14 mi) from the epicentre. 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 310 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 50,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 35,000× the energy of this one
  3. Around the size people start to feel M 3.0 3.1× the energy of this one
  4. This earthquake M 2.7 about 310 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. 5.0 62 km ESE of West Yellowstone, Montana · 44 km NNW 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 44.0513, -110.2258. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Teton County, WY 16 km (10 mi) W earthquakes near Teton County
Park County, WY 70 km (44 mi) NE earthquakes near Park County
Teton County, ID 85 km (53 mi) WSW earthquakes near Teton County
Fremont County, ID 102 km (63 mi) W earthquakes near Fremont County
Madison County, ID 118 km (74 mi) WSW earthquakes near Madison County
Bonneville County, ID 134 km (83 mi) WSW earthquakes near Bonneville County

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

Aftershocks so far

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

  1. 0.6 66 km ESE of West Yellowstone, Montana
  2. 1.5 61 km ESE of West Yellowstone, Montana
  3. 1.4 68 km ESE of West Yellowstone, Montana
  4. 1.5 53 km SE of West Yellowstone, Montana
  5. 1.2 51 km NE of Alta, Wyoming
  6. 1.3 51 km NE of Alta, Wyoming
  7. 0.8 52 km N of Kelly, Wyoming
  8. 2.0 24 km NE of Kelly, Wyoming
  9. 0.6 58 km E of Warm River, Idaho
  10. 1.9 58 km E of Warm River, Idaho
  11. 1.3 58 km E of Warm River, Idaho
  12. 0.9 55 km E of Warm River, Idaho
  13. 0.8 57 km E of Warm River, Idaho
  14. 1.8 57 km E of Warm River, Idaho

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.