QuakeIndex

Earthquake · reviewed by a seismologist

M 1.7ml

33 km E of West Yellowstone, Montana

· 7.7 km deep · released about 10 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Teton County 72 kmFremont County 81 kmPark County 88 kmPark County 89 kmGallatin County 101 kmTeton County 110 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 1.7 (ml)
Depth
7.7 km below the surface
Felt
no reports yet
Nearest
Teton County, 72 km SSE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 306 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

How big was it?

This earthquake released about 10 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 1,500,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,100,000× the energy of this one
  3. Around the size people start to feel M 3.0 95× the energy of this one
  4. This earthquake M 1.7 about 10 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 44.6717, -110.6798. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Teton County, WY 72 km (45 mi) NNW of here earthquakes near Teton County
Fremont County, ID 81 km (51 mi) NE of here earthquakes near Fremont County
Park County, WY 88 km (55 mi) WNW of here earthquakes near Park County
Park County, MT 89 km (55 mi) S of here earthquakes near Park County
Gallatin County, MT 101 km (63 mi) SSE of here earthquakes near Gallatin County
Teton County, ID 110 km (68 mi) NNE of here earthquakes near Teton County

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

Aftershocks so far

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

  1. 1.6 23 km SSW of Mammoth, Wyoming
  2. 2.4 22 km SSW of Mammoth, Wyoming
  3. 1.6 19 km S of Mammoth, Wyoming
  4. 1.7 68 km ESE of West Yellowstone, Montana
  5. 1.9 7 km N of West Yellowstone, Montana
  6. 1.8 7 km N of West Yellowstone, Montana
  7. 1.5 8 km E of Hebgen Lake Estates, Montana
  8. 1.7 32 km SW of Silver Gate, Montana
  9. 1.5 32 km SW of Silver Gate, Montana
  10. 1.6 32 km SW of Silver Gate, Montana
  11. 1.6 34 km SE of Mammoth, Wyoming
  12. 1.7 46 km SSE of Mammoth, Wyoming
  13. 1.7 46 km SSE of Mammoth, Wyoming
  14. 1.6 47 km SSE of Mammoth, Wyoming
  15. 2.1 42 km SSE of Mammoth, 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.

For this area

The largest earthquake within 50 km in our catalogue was M 4.4 on 2017-06-16 — it released about 10,000 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.