QuakeIndex

Earthquake · reviewed by a seismologist

M 3.1ml

7 km SSW of Kittitas, Washington

· 8.2 km deep · released about 1,300 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Kittitas County 29 kmYakima County 56 kmGrant County 81 kmBenton County 104 kmChelan County 106 kmDouglas County 108 kmKlickitat County 119 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 3.1 (ml)
Depth
8.2 km below the surface
Felt
10 reports · strongest reported intensity III
Measured shaking
intensity II (ShakeMap)
Nearest
Kittitas County, 29 km NW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3466 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 10 people have reported feeling it to USGS.

How big was it?

This earthquake released about 1,300 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 4.1 would have released about 32 times as much.

  1. Northridge, California 1994 M 6.7 270,000× the energy of this one
  2. Mineral, Virginia 2011 M 5.8 12,000× the energy of this one
  3. Magna, Utah 2020 M 5.7 8,500× the energy of this one
  4. This earthquake M 3.1 about 1,300 lb of TNT
  5. Around the size people start to feel M 3.0 this one released 1.3× 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 46.9165, -120.4378. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Kittitas County, WA 29 km (18 mi) SE of here earthquakes near Kittitas County
Yakima County, WA 56 km (35 mi) NNE of here earthquakes near Yakima County
Grant County, WA 81 km (50 mi) WSW of here earthquakes near Grant County
Benton County, WA 104 km (65 mi) NW of here earthquakes near Benton County
Chelan County, WA 106 km (66 mi) S of here earthquakes near Chelan County
Douglas County, WA 108 km (67 mi) SSW of here earthquakes near Douglas 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. 1.6 4 km WNW of Summitview, Washington
  2. 1.6 16 km N of Kittitas, Washington
  3. 1.7 1 km N of Tieton, Washington
  4. 1.9 Washington
  5. 1.6 2 km ENE of Selah, Washington
  6. 1.8 7 km WSW of Thorp, Washington
  7. 2.0 14 km NE of Cliffdell, Washington
  8. 1.5 3 km ESE of Selah, Washington
  9. 1.7 3 km E of Selah, Washington
  10. 1.8 Washington
  11. 1.5 9 km W of Vantage, Washington
  12. 1.6 9 km SSW of Ellensburg, Washington
  13. 1.7 3 km W of Thorp, Washington
  14. 1.7 2 km NNE of Yakima, Washington
  15. 2.0 5 km NE of Gleed, Washington

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.