QuakeIndex

Earthquake · reviewed by a seismologist

M 3.9mwr

15 km E of Jackson, Wyoming

· 3.6 km deep · released about 11 tons of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Teton County 61 kmTeton County 65 kmBonneville County 86 kmMadison County 95 kmSublette County 95 kmCaribou County 110 kmFremont County 111 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 3.9 (mwr)
Depth
3.6 km below the surface
Felt
192 reports · strongest reported intensity IV
Measured shaking
intensity IV (ShakeMap)
USGS impact alert
green
Nearest
Teton County, 61 km WNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 42 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 192 people have reported feeling it to USGS.

How big was it?

This earthquake released about 11 tons of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.9 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 16,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 710× the energy of this one
  3. Magna, Utah 2020 M 5.7 500× the energy of this one
  4. This earthquake M 3.9 about 11 tons of TNT
  5. Around the size people start to feel M 3.0 this one released 22× more

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 43.4729, -110.5667. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Teton County, ID 61 km (38 mi) ESE of here earthquakes near Teton County
Teton County, WY 65 km (40 mi) S of here earthquakes near Teton County
Bonneville County, ID 86 km (53 mi) E of here earthquakes near Bonneville County
Madison County, ID 95 km (59 mi) ESE of here earthquakes near Madison County
Sublette County, WY 95 km (59 mi) NNW of here earthquakes near Sublette County
Caribou County, ID 110 km (68 mi) NE of here earthquakes near Caribou County

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

Aftershocks so far

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

  1. 2.2 1 km E of Alpine Northeast, Wyoming
  2. 2.2 6 km N of Jackson, Wyoming
  3. 2.1 5 km NNW of Jackson, Wyoming
  4. 2.3 5 km NNE of Jackson, Wyoming
  5. 2.3 4 km E of Moose Wilson Road, Wyoming
  6. 2.6 5 km NNW of Jackson, Wyoming
  7. 2.2 23 km ESE of Jackson, Wyoming
  8. 2.3 22 km ESE of Jackson, Wyoming
  9. 2.2 25 km SE of Kelly, Wyoming
  10. 1.6 22 km SE of Kelly, Wyoming
  11. 2.1 23 km ESE of Jackson, Wyoming
  12. 2.0 23 km ESE of Jackson, Wyoming
  13. 1.8 27 km NNE of Bondurant, Wyoming
  14. 2.0 3 km NE of Hoback, Wyoming
  15. 3.1 26 km ESE of Kelly, 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 4.8 on 2016-08-27 — it released about 22 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.