QuakeIndex

Earthquake · reviewed by a seismologist

M 2.4ml

Earthquake near Worland, WY

USGS: 6 km SE of Hyattville, Wyoming

9:19 pm MST, Jan 23, 2018 · · 9.4 km deep · released about 120 lb of TNT

Every earthquake near Worland Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Washakie County 38 kmBig Horn County 50 kmJohnson County 78 kmSheridan County 82 kmHot Springs County 90 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
9:19 pm MST on 23 January 2018 ()
Where
39 km (24 mi) ENE of Worland, WY · earthquakes near Worland
Magnitude
M 2.4 (ml)
Depth
9.4 km below the surface
Felt
no reports yet
Nearest
Washakie County, 38 km SSW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3174 days ago

A magnitude 2.4 earthquake was recorded 39 km (24 mi) ENE of Worland, WY, at 9:19 pm MST on 23 January 2018 (04:19 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 120 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.4 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 130,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 89,000× the energy of this one
  3. Around the size people start to feel M 3.0 7.9× the energy of this one
  4. This earthquake M 2.4 about 120 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 44.2092, -107.5405. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Washakie County, WY 38 km (24 mi) SSW earthquakes near Washakie County
Big Horn County, WY 50 km (31 mi) NW earthquakes near Big Horn County
Johnson County, WY 78 km (49 mi) ESE earthquakes near Johnson County
Sheridan County, WY 82 km (51 mi) NE earthquakes near Sheridan County
Hot Springs County, WY 90 km (56 mi) SW earthquakes near Hot Springs County
Carbon County, MT 163 km (101 mi) NW earthquakes near Carbon County

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

Aftershocks so far

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

  1. 2.4 5 km ESE of Manderson, Wyoming
  2. 2.6 10 km SSE of Ten Sleep, Wyoming
  3. 2.8 8 km S of Shell, Wyoming
  4. 2.6 28 km SSE of Ten Sleep, Wyoming
  5. 2.2 16 km ESE of Shell, Wyoming
  6. 2.4 5 km E of Shell, Wyoming
  7. 2.8 30 km SSW of Ten Sleep, Wyoming
  8. 3.2 24 km SSE of Meadow Lark Lake, Wyoming
  9. 2.6 10 km SW of Meadow Lark Lake, 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.