QuakeIndex

Earthquake · reviewed by a seismologist

M 1.5ml

12 km SSE of West Yellowstone, Montana

· 15 km deep · released about 5.6 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Fremont County 50 kmTeton County 75 kmTeton County 89 kmMadison County 97 kmClark County 107 kmGallatin County 108 kmMadison County 109 kmPark County 110 kmPark 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 1.5 (ml)
Depth
15 km below the surface
Felt
no reports yet
Nearest
Fremont County, 50 km SW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2988 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 5.6 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 2,700,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,900,000× the energy of this one
  3. Around the size people start to feel M 3.0 170× the energy of this one
  4. This earthquake M 1.5 about 5.6 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 44.5502, -111.0617. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Fremont County, ID 50 km (31 mi) NE of here earthquakes near Fremont County
Teton County, WY 75 km (47 mi) NW of here earthquakes near Teton County
Teton County, ID 89 km (55 mi) N of here earthquakes near Teton County
Madison County, ID 97 km (60 mi) NNE of here earthquakes near Madison County
Clark County, ID 107 km (66 mi) ENE of here earthquakes near Clark County
Gallatin County, MT 108 km (67 mi) S 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. 2.0 26 km ESE of West Yellowstone, Montana
  2. 1.6 46 km SE of West Yellowstone, Montana
  3. 2.1 23 km SW of Mammoth, Wyoming
  4. 1.5 18 km NE of West Yellowstone, Montana
  5. 1.8 18 km NE of West Yellowstone, Montana
  6. 2.2 12 km NNE of West Yellowstone, Montana
  7. 2.0 11 km NNE of West Yellowstone, Montana
  8. 2.6 10 km NNE of West Yellowstone, Montana
  9. 1.7 45 km ENE of Warm River, Idaho
  10. 1.5 31 km ESE of Island Park, Idaho
  11. 1.7 46 km ENE of Warm River, Idaho
  12. 2.3 23 km SW of Mammoth, Wyoming
  13. 2.7 13 km NE of West Yellowstone, Montana
  14. 1.6 47 km ENE of Warm River, Idaho
  15. 1.7 54 km SE 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 19,000 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.