QuakeIndex

explosion · reviewed by a seismologist

M 2.2md

Earthquake near Cheney, WA

No earthquake was likely felt in Cheney in the 24 hours to 6:58 pm PST (02:58 UTC). The last one was M 2.1, 10 km (6 mi) NNE, at 9:01 am PST on 15 November 2023, estimated intensity II (weak) in town. Every earthquake near Cheney

No: USGS classifies this as a explosion, not an earthquake. A magnitude 2.2 explosion was recorded 32 km (20 mi) southwest of Cheney, WA, at 4:14 pm PST on 3 January 2024 (00:14 UTC), less than 1 km deep.

USGS: 6 km E of Sprague, Washington

54 km (34 mi) SW of Spokane, WA

4:14 pm PST, Jan 3, 2024 · · -0.7 km deep · released about 56 lb of TNT

10 km30 km60 km120 km N Lincoln County 51 kmWhitman County 51 kmSpokane County 52 kmAdams County 56 kmBenewah County 96 kmKootenai County 100 kmGarfield County 100 kmLatah County 103 kmColumbia 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
4:14 pm PST on 3 January 2024 ()
Where
32 km (20 mi) southwest of Cheney, WA · earthquakes near Cheney
Magnitude
M 2.2 (md)
Depth
-0.7 km below the surface
Felt
no reports yet
Nearest
Lincoln County, 51 km NW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1044 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage.

At this magnitude and depth, people at rest would likely notice it out to about 18 km (11 mi) from the epicentre. In Cheney, 32 km away, the estimate is intensity II (weak). Estimated from magnitude, depth and distance with the intensity equation USGS Did You Feel It? uses; felt reports, where there are any, are the measurement.

USGS catalogues this as explosion, not an earthquake.

How big was it?

This earthquake released about 56 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.2 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 270,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 190,000× the energy of this one
  3. Around the size people start to feel M 3.0 17× the energy of this one
  4. This earthquake M 2.2 about 56 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 47.2925, -117.8953. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Lincoln County, WA 51 km (32 mi) NW earthquakes near Lincoln County
Whitman County, WA 51 km (32 mi) SSE earthquakes near Whitman County
Spokane County, WA 52 km (32 mi) NE earthquakes near Spokane County
Adams County, WA 56 km (35 mi) WSW earthquakes near Adams County
Benewah County, ID 96 km (59 mi) E earthquakes near Benewah County
Kootenai County, ID 100 km (62 mi) ENE earthquakes near Kootenai County

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

Aftershocks so far

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

  1. 2.3 8 km NE of Sprague, Washington
  2. 1.9 6 km ENE of Sprague, Washington
  3. 1.9 5 km ENE of Sprague, Washington
  4. 2.3 8 km NE of Sprague, Washington
  5. 2.5 8 km ENE of Sprague, Washington
  6. 2.0 6 km ENE of Sprague, Washington
  7. 2.4 7 km ENE of Sprague, Washington
  8. 1.9 4 km ENE of Ritzville, Washington
  9. 2.4 9 km NE of Sprague, Washington
  10. 1.7 7 km NE of Sprague, Washington
  11. 1.5 8 km ENE of Four Lakes, Washington
  12. 2.5 9 km NE of Sprague, Washington
  13. 2.1 5 km ENE of Sprague, Washington
  14. 2.1 6 km NE of Sprague, Washington
  15. 2.3 8 km NE of Sprague, 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.