QuakeIndex

Earthquake · reviewed by a seismologist

M 2.1ml

Earthquake near Pinedale, WY

USGS: 34 km SSW of Dubois, Wyoming

10:05 pm MST, Feb 25, 2017 · · 7.8 km deep · released about 40 lb of TNT

10 km30 km60 km120 km N Sublette County 54 kmFremont County 97 kmTeton County 104 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
10:05 pm MST on 25 February 2017 ()
Where
42 km (26 mi) N of Pinedale, WY · earthquakes near Pinedale
Magnitude
M 2.1 (ml)
Depth
7.8 km below the surface
Felt
no reports yet
Nearest
Sublette County, 54 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3505 days ago

A magnitude 2.1 earthquake was recorded 42 km (26 mi) N of Pinedale, WY, at 10:05 pm MST on 25 February 2017 (05:05 UTC). This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

How big was it?

This earthquake released about 40 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 5.8 380,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 270,000× the energy of this one
  3. Around the size people start to feel M 3.0 24× the energy of this one
  4. This earthquake M 2.1 about 40 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.

For this area

No earthquake of M4 or more has been recorded within 50 km since our catalogue begins in 2016.

Before 2016, the USGS record since 1900 lists no earthquake of M5 or more within 50 km.

Since 2016: the QuakeIndex catalogue (US, M1.5+), built from the USGS FDSN event service. Before 2016: USGS ComCat, M5+ from 1900. Distances are between epicentres. This is the record, not a forecast.

Where

Epicentre 43.2408, -109.7723. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Sublette County, WY 54 km (33 mi) SSW earthquakes near Sublette County
Fremont County, WY 97 km (60 mi) ESE earthquakes near Fremont County
Teton County, WY 104 km (65 mi) NNW earthquakes near Teton County
Hot Springs County, WY 120 km (75 mi) ENE earthquakes near Hot Springs County
Teton County, ID 130 km (81 mi) WNW earthquakes near Teton County
Lincoln County, WY 135 km (84 mi) SW earthquakes near Lincoln County

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

Aftershocks so far

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

  1. 2.6 20 km ENE of Pinedale, Wyoming
  2. 1.8 27 km NNE of Bondurant, Wyoming
  3. 2.3 22 km S of Dubois, Wyoming
  4. 1.9 24 km NNW of Cora, Wyoming
  5. 2.5 26 km NNE of Bondurant, Wyoming
  6. 1.6 13 km ENE of Bondurant, Wyoming
  7. 1.9 28 km NNE of Bondurant, Wyoming
  8. 2.5 32 km NNE of Bondurant, Wyoming
  9. 2.1 29 km NNE of Bondurant, Wyoming
  10. 2.2 28 km NNE of Bondurant, Wyoming
  11. 1.7 28 km NNE of Bondurant, Wyoming
  12. 2.0 28 km NNE of Bondurant, Wyoming
  13. 1.6 12 km NE of Bondurant, Wyoming
  14. 1.5 32 km ESE of Kelly, Wyoming
  15. 2.5 33 km SSW of Dubois, 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.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.