QuakeIndex

Earthquake · reviewed by a seismologist

M 2.4ml

48 km NE of Kelly, Wyoming

Yes. A magnitude 2.4 earthquake was recorded 48 km NE of Kelly, Wyoming, at 12:42 am MDT on 28 June 2019 (06:42 UTC), 5.7 km deep.

· 5.7 km deep · released about 120 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Teton County 18 kmPark County 78 kmTeton County 81 kmFremont County 104 kmMadison 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
Magnitude
M 2.4 (ml)
Depth
5.7 km below the surface
Felt
no reports yet
Nearest
Teton County, 18 km WNW
Nearest mapped fault
Buffalo Fork fault, 20 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 2615 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 20 km (12 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 120 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.4 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 130,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 89,000× the energy of this one
  3. Around the size people start to feel M 3.0 7.9× the energy of this one
  4. This earthquake M 2.4 about 120 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 20 km ESE of Kelly, Wyoming · 45 km SSW 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 43.9602, -110.2377. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Teton County, WY 18 km (11 mi) WNW earthquakes near Teton County
Park County, WY 78 km (49 mi) NE earthquakes near Park County
Teton County, ID 81 km (50 mi) WSW earthquakes near Teton County
Fremont County, ID 104 km (64 mi) WNW earthquakes near Fremont County
Madison County, ID 115 km (72 mi) W earthquakes near Madison County
Bonneville County, ID 128 km (79 mi) WSW earthquakes near Bonneville County

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

Aftershocks so far

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

  1. 2.6 61 km SE of West Yellowstone, Montana
  2. 1.7 59 km SE of West Yellowstone, Montana
  3. 2.0 60 km SE of West Yellowstone, Montana
  4. 1.8 60 km SE of West Yellowstone, Montana
  5. 2.1 61 km SE of West Yellowstone, Montana
  6. 1.8 60 km SE of West Yellowstone, Montana
  7. 2.0 60 km SE of West Yellowstone, Montana
  8. 1.6 59 km SE of West Yellowstone, Montana
  9. 1.7 60 km SE of West Yellowstone, Montana
  10. 1.5 59 km SE of West Yellowstone, Montana
  11. 1.7 60 km SE of West Yellowstone, Montana
  12. 2.2 35 km ENE of Kelly, Wyoming
  13. 1.9 38 km NW of Dubois, Wyoming
  14. 3.7 17 km E of Kelly, Wyoming
  15. 2.3 16 km E 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.