QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6ml

31 km ESE of Mammoth, Wyoming

· 14 km deep · released about 6.4 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Park County 70 kmPark County 71 kmTeton County 90 kmGallatin County 98 kmCarbon County 111 kmSweet Grass County 111 kmFremont County 115 kmStillwater County 117 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 1.6 (ml)
Depth
14 km below the surface
Felt
no reports yet
Nearest
Park County, 70 km NNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 398 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 6.4 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,400,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,700,000× the energy of this one
  3. Around the size people start to feel M 3.0 150× the energy of this one
  4. This earthquake M 1.6 about 6.4 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 44.8515, -110.3370. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Park County, MT 70 km (43 mi) SSE of here earthquakes near Park County
Park County, WY 71 km (44 mi) NW of here earthquakes near Park County
Teton County, WY 90 km (56 mi) N of here earthquakes near Teton County
Gallatin County, MT 98 km (61 mi) SE of here earthquakes near Gallatin County
Carbon County, MT 111 km (69 mi) WSW of here earthquakes near Carbon County
Sweet Grass County, MT 111 km (69 mi) SSW of here earthquakes near Sweet Grass County

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

Aftershocks so far

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

  1. 2.1 23 km SSW of Mammoth, Wyoming
  2. 1.6 33 km E of West Yellowstone, Montana
  3. 3.2 22 km SSW of Mammoth, Wyoming
  4. 1.8 33 km E of West Yellowstone, Montana
  5. 3.1 23 km SSW of Mammoth, Wyoming
  6. 2.0 33 km E of West Yellowstone, Montana
  7. 1.9 33 km S of Mammoth, Wyoming
  8. 1.7 33 km E of West Yellowstone, Montana
  9. 2.5 33 km E of West Yellowstone, Montana
  10. 1.5 23 km SSW of Mammoth, Wyoming
  11. 1.7 23 km SSW of Mammoth, Wyoming
  12. 1.9 23 km SSW of Mammoth, Wyoming
  13. 1.6 23 km SSW of Mammoth, Wyoming
  14. 2.1 23 km SSW of Mammoth, Wyoming
  15. 1.8 23 km SSW 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 4.2 on 2022-05-11 — 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.