QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1md

Wyoming

· 8.4 km deep · released about 47 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Teton County 65 kmFremont County 70 kmPark County 93 kmTeton County 98 kmPark County 100 kmGallatin County 109 kmMadison County 113 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 2.1 (md)
Depth
8.4 km below the surface
Felt
no reports yet
Nearest
Teton County, 65 km SSE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2627 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 47 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.1 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 320,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 230,000× the energy of this one
  3. Around the size people start to feel M 3.0 20× the energy of this one
  4. This earthquake M 2.1 about 47 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 44.5818, -110.7663. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Teton County, WY 65 km (40 mi) NNW of here earthquakes near Teton County
Fremont County, ID 70 km (43 mi) NE of here earthquakes near Fremont County
Park County, WY 93 km (58 mi) W of here earthquakes near Park County
Teton County, ID 98 km (61 mi) NNE of here earthquakes near Teton County
Park County, MT 100 km (62 mi) S of here earthquakes near Park County
Gallatin County, MT 109 km (68 mi) SSE of here earthquakes near Gallatin 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. 2.1 43 km SSE of West Yellowstone, Montana
  2. 1.7 43 km SSE of West Yellowstone, Montana
  3. 2.5 43 km SSE of West Yellowstone, Montana
  4. 2.1 43 km SSE of Mammoth, Wyoming
  5. 1.9 48 km ESE of West Yellowstone, Montana
  6. 2.0 7 km ESE of West Yellowstone, Montana
  7. 1.5 25 km ENE of West Yellowstone, Montana
  8. 1.9 6 km ESE of West Yellowstone, Montana
  9. 1.7 6 km ESE of West Yellowstone, Montana
  10. 1.8 58 km SE of West Yellowstone, Montana
  11. 1.6 50 km SSW of Silver Gate, Montana
  12. 2.0 50 km SSE of Mammoth, Wyoming
  13. 1.8 49 km SSE of Mammoth, Wyoming
  14. 2.4 17 km S of West Yellowstone, Montana
  15. 1.6 39 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 2,200 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.