QuakeIndex

explosion · reviewed by a seismologist

M 2.1ml

4 km NNE of Fairwood, Washington

· -0.7 km deep · released about 37 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Spokane County 20 kmKootenai County 54 kmStevens County 73 kmLincoln County 80 kmBonner County 82 kmPend Oreille County 83 kmBenewah County 87 kmWhitman County 100 kmFerry County 112 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 2.1 (ml)
Depth
-0.7 km below the surface
Felt
1 report · strongest reported intensity III
Nearest
Spokane County, 20 km S
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 690 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 1 person has reported feeling it to USGS.

USGS catalogues this as explosion, not an earthquake.

How big was it?

This earthquake released about 37 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 5.8 410,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 290,000× the energy of this one
  3. Around the size people start to feel M 3.0 26× the energy of this one
  4. This earthquake M 2.1 about 37 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 47.8027, -117.3993. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Spokane County, WA 20 km (13 mi) N of here earthquakes near Spokane County
Kootenai County, ID 54 km (34 mi) WNW of here earthquakes near Kootenai County
Stevens County, WA 73 km (46 mi) SSE of here earthquakes near Stevens County
Lincoln County, WA 80 km (50 mi) ENE of here earthquakes near Lincoln County
Bonner County, ID 82 km (51 mi) SW of here earthquakes near Bonner County
Pend Oreille County, WA 83 km (52 mi) S of here earthquakes near Pend Oreille County

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

Aftershocks so far

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

  1. 1.9 2 km NE of Fairwood, Washington
  2. 2.1 4 km NW of Rockford Bay, Idaho
  3. 2.2 2 km NW of Mead, Washington
  4. 1.7 9 km WSW of Newport, Washington
  5. 1.7 6 km SE of Spangle, Washington
  6. 1.6 3 km ESE of Veradale, Washington
  7. 1.7 4 km SSW of Liberty Lake, Washington
  8. 1.6 13 km SSE of Liberty Lake, Washington
  9. 1.9 12 km N of Reardan, Washington
  10. 1.8 2 km NNE of Fairwood, Washington
  11. 2.3 2 km NNE of Fairwood, Washington
  12. 1.8 20 km NE of Deer Park, Washington
  13. 2.1 9 km NNW of Airway Heights, Washington
  14. 1.5 8 km ENE of Four Lakes, Washington
  15. 1.8 6 km S of Valley, 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.