QuakeIndex

Earthquake · reviewed by a seismologist

M 2.6ml

3 km NW of West Yellowstone, Montana

· 7.8 km deep · released about 280 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Fremont County 59 kmTeton County 91 kmGallatin County 92 kmMadison County 93 kmPark County 98 kmTeton County 103 kmClark County 106 kmMadison County 108 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 2.6 (ml)
Depth
7.8 km below the surface
Felt
1 report · strongest reported intensity III
Nearest
Fremont County, 59 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 729 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 1 person has reported feeling it to USGS.

How big was it?

This earthquake released about 280 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.6 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 53,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 38,000× the energy of this one
  3. Around the size people start to feel M 3.0 3.3× the energy of this one
  4. This earthquake M 2.6 about 280 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.

Where

Epicentre 44.6893, -111.1362. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Fremont County, ID 59 km (37 mi) NNE of here earthquakes near Fremont County
Teton County, WY 91 km (56 mi) NW of here earthquakes near Teton County
Gallatin County, MT 92 km (57 mi) S of here earthquakes near Gallatin County
Madison County, MT 93 km (58 mi) SE of here earthquakes near Madison County
Park County, MT 98 km (61 mi) SSW of here earthquakes near Park County
Teton County, ID 103 km (64 mi) N of here earthquakes near Teton County

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

Aftershocks so far

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

  1. 2.0 14 km SSW of Mammoth, Wyoming
  2. 1.6 6 km NNE of West Yellowstone, Montana
  3. 1.5 6 km NNE of West Yellowstone, Montana
  4. 1.9 4 km E of Hebgen Lake Estates, Montana
  5. 2.1 8 km NE of West Yellowstone, Montana
  6. 1.7 8 km NE of West Yellowstone, Montana
  7. 2.0 18 km ENE of West Yellowstone, Montana
  8. 2.3 16 km ENE of Hebgen Lake Estates, Montana
  9. 1.9 6 km ESE of West Yellowstone, Montana
  10. 1.9 6 km ESE of West Yellowstone, Montana
  11. 2.1 6 km ESE of West Yellowstone, Montana
  12. 1.6 6 km SE of Hebgen Lake Estates, Montana
  13. 1.5 21 km W of Hebgen Lake Estates, Montana
  14. 1.6 6 km NNE of West Yellowstone, Montana
  15. 1.8 5 km NNE of West Yellowstone, Montana

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.

For this area

The largest earthquake within 50 km in our catalogue was M 4.4 on 2017-06-16 — it released about 370 times the energy of this one.

From the QuakeIndex catalogue, built from the USGS FDSN event service.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.