QuakeIndex

explosion · reviewed by a seismologist

M 2.0ml

6 km SW of Prairie City, Oregon

· -1.3 km deep · released about 31 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Grant County 20 kmBaker County 91 kmWheeler County 105 kmUnion County 115 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 2.0 (ml)
Depth
-1.3 km below the surface
Felt
no reports yet
Nearest
Grant County, 20 km WNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 716 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 31 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.0 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 480,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 340,000× the energy of this one
  3. Around the size people start to feel M 3.0 31× the energy of this one
  4. This earthquake M 2.0 about 31 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 44.4258, -118.7777. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Grant County, OR 20 km (13 mi) ESE of here earthquakes near Grant County
Baker County, OR 91 km (57 mi) WSW of here earthquakes near Baker County
Wheeler County, OR 105 km (65 mi) ESE of here earthquakes near Wheeler County
Union County, OR 115 km (72 mi) SSW of here earthquakes near Union County
Morrow County, OR 129 km (80 mi) SSE of here earthquakes near Morrow County
Gilliam County, OR 159 km (99 mi) SE of here earthquakes near Gilliam County

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

Aftershocks so far

1 earthquake has been recorded within 50 km since this one.

  1. 1.8 11 km ENE of Prairie City, Oregon

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.