QuakeIndex

explosion · reviewed by a seismologist

M 2.1md

Earthquake near Spokane, WA

No earthquake was likely felt in Spokane in the 24 hours to 5:47 pm PST (01:47 UTC). The last one was M 1.9, 14 km (9 mi) NNE, at 10:45 am PDT on 18 September 2026, estimated intensity II (weak) in town. Every earthquake near Spokane

No: USGS classifies this as a explosion, not an earthquake. A magnitude 2.1 explosion was recorded 13 km (8 mi) southwest of Spokane, WA, at 9:01 am PST on 15 November 2023 (17:01 UTC), less than 1 km deep.

USGS: 4 km E of Four Lakes, Washington

13 km (8 mi) SW of Spokane, WA

9:01 am PST, Nov 15, 2023 · · -0.7 km deep · released about 47 lb of TNT

10 km30 km60 km120 km N Spokane County 11 kmKootenai County 64 kmLincoln County 66 kmWhitman County 74 kmBenewah County 78 kmStevens County 94 kmAdams County 96 kmLatah County 103 kmBonner County 108 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
9:01 am PST on 15 November 2023 ()
Where
13 km (8 mi) southwest of Spokane, WA · earthquakes near Spokane
Magnitude
M 2.1 (md)
Depth
-0.7 km below the surface
Felt
no reports yet
Nearest
Spokane County, 11 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1091 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 Spokane, 13 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.

Earthquakes near other towns within 30 km: Cheney, Airway Heights, Fairchild Air Force Base, Medical Lake, Town and Country, Country Homes.

USGS catalogues this as explosion, not an earthquake.

How big was it?

This earthquake released about 47 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 5.8 320,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 230,000× the energy of this one
  3. Around the size people start to feel M 3.0 20× the energy of this one
  4. This earthquake M 2.1 about 47 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 47.5678, -117.5328. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection from the epicentre
Spokane County, WA 11 km (7 mi) ENE earthquakes near Spokane County
Kootenai County, ID 64 km (40 mi) E earthquakes near Kootenai County
Lincoln County, WA 66 km (41 mi) W earthquakes near Lincoln County
Whitman County, WA 74 km (46 mi) S earthquakes near Whitman County
Benewah County, ID 78 km (48 mi) ESE earthquakes near Benewah County
Stevens County, WA 94 km (59 mi) NNW earthquakes near Stevens County

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

Aftershocks so far

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

  1. 2.3 8 km NE of Sprague, Washington
  2. 1.0 7 km NNE of Airway Heights, Washington
  3. 1.9 2 km NE of Fairwood, Washington
  4. 1.9 6 km ENE of Sprague, Washington
  5. 2.2 2 km NW of Mead, Washington
  6. 1.9 5 km ENE of Sprague, Washington
  7. 2.3 8 km NE of Sprague, Washington
  8. 1.7 6 km SE of Spangle, Washington
  9. 2.5 8 km ENE of Sprague, Washington
  10. 1.6 3 km ESE of Veradale, Washington
  11. 1.7 4 km SSW of Liberty Lake, Washington
  12. 2.0 6 km ENE of Sprague, Washington
  13. 1.6 13 km SSE of Liberty Lake, Washington
  14. 1.9 12 km N of Reardan, Washington
  15. 2.4 7 km ENE 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.