QuakeIndex

Earthquake · reviewed by a seismologist

M 2.7ml

20 km NE of Thorp, Washington

· 2.3 km deep · released about 320 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Kittitas County 17 kmChelan County 71 kmGrant County 79 kmDouglas County 84 kmYakima County 87 kmKing 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
Magnitude
M 2.7 (ml)
Depth
2.3 km below the surface
Felt
2 reports · strongest reported intensity II
Measured shaking
intensity III (ShakeMap)
Nearest
Kittitas County, 17 km SW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2995 days ago

This was a small earthquake. Shaking like this is often felt indoors nearby and very rarely causes damage. 2 people have reported feeling it to USGS.

How big was it?

This earthquake released about 320 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.7 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 48,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 34,000× the energy of this one
  3. Around the size people start to feel M 3.0 3× the energy of this one
  4. This earthquake M 2.7 about 320 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 47.2222, -120.5118. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Kittitas County, WA 17 km (10 mi) NE of here earthquakes near Kittitas County
Chelan County, WA 71 km (44 mi) S of here earthquakes near Chelan County
Grant County, WA 79 km (49 mi) W of here earthquakes near Grant County
Douglas County, WA 84 km (52 mi) SW of here earthquakes near Douglas County
Yakima County, WA 87 km (54 mi) NNE of here earthquakes near Yakima County
King County, WA 104 km (65 mi) ESE of here earthquakes near King County

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

Aftershocks so far

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

  1. 2.1 8 km S of Entiat, Washington
  2. 1.9 9 km SSW of Ellensburg, Washington
  3. 2.0 9 km SSW of Ellensburg, Washington
  4. 1.8 9 km S of Ellensburg, Washington
  5. 2.1 9 km SSW of Ellensburg, Washington
  6. 1.9 7 km ESE of Kittitas, Washington
  7. 1.9 11 km WNW of Thorp, Washington
  8. 1.5 9 km S of Ellensburg, Washington
  9. 1.7 9 km S of Ellensburg, Washington
  10. 1.7 5 km W of Vantage, Washington
  11. 1.8 5 km SE of Kittitas, Washington
  12. 1.6 8 km SSE of Ellensburg, Washington
  13. 1.5 11 km ESE of Cle Elum, Washington
  14. 1.7 14 km NE of Naches, Washington
  15. 1.5 13 km SW of Ellensburg, 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.