QuakeIndex

explosion · reviewed by a seismologist

M 1.9ml

10 km ENE of Prosser, Washington

· -0.5 km deep · released about 21 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Benton County 11 kmFranklin County 66 kmYakima County 86 kmWalla Walla County 90 kmMorrow County 92 kmKlickitat County 97 kmUmatilla County 103 kmGrant County 108 kmGilliam 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
Magnitude
M 1.9 (ml)
Depth
-0.5 km below the surface
Felt
no reports yet
Nearest
Benton County, 11 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 745 days ago

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

USGS catalogues this as explosion, not an earthquake.

How big was it?

This earthquake released about 21 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.9 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 730,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 520,000× the energy of this one
  3. Around the size people start to feel M 3.0 46× the energy of this one
  4. This earthquake M 1.9 about 21 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 46.2547, -119.6552. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Benton County, WA 11 km (7 mi) WNW of here earthquakes near Benton County
Franklin County, WA 66 km (41 mi) WSW of here earthquakes near Franklin County
Yakima County, WA 86 km (54 mi) ESE of here earthquakes near Yakima County
Walla Walla County, WA 90 km (56 mi) W of here earthquakes near Walla Walla County
Morrow County, OR 92 km (57 mi) N of here earthquakes near Morrow County
Klickitat County, WA 97 km (60 mi) ENE of here earthquakes near Klickitat County

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

Aftershocks so far

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

  1. 2.4 11 km SE of Desert Aire, Washington
  2. 1.8 4 km SSE of Kennewick, Washington
  3. 2.3 4 km SSW of West Richland, Washington
  4. 1.7 10 km SSW of Tri-Cities, Washington
  5. 2.0 4 km SE of Umatilla, Oregon
  6. 1.6 10 km ENE of Prosser, Washington
  7. 1.9 12 km SE of Desert Aire, Washington
  8. 1.6 12 km SE of Desert Aire, Washington
  9. 1.8 12 km SE of Desert Aire, Washington
  10. 1.7 12 km SE of Desert Aire, Washington
  11. 1.9 12 km SE of Desert Aire, Washington
  12. 1.9 12 km SE of Desert Aire, Washington
  13. 2.2 4 km SE of Benton City, Washington
  14. 1.7 12 km SE of Desert Aire, Washington
  15. 1.6 12 km SE of Desert Aire, 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

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