QuakeIndex

Earthquake · reviewed by a seismologist

M 1.9ml

23 km ESE of Halfway, Oregon

· 6.2 km deep · released about 19 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Adams County 31 kmWashington County 39 kmBaker County 68 kmPayette County 88 kmGem County 89 kmWallowa County 93 kmValley County 96 kmUnion County 107 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
6.2 km below the surface
Felt
no reports yet
Nearest
Adams County, 31 km ENE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 670 days ago

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

How big was it?

This earthquake released about 19 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 5.8 790,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 560,000× the energy of this one
  3. Around the size people start to feel M 3.0 50× the energy of this one
  4. This earthquake M 1.9 about 19 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 44.7953, -116.8362. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Adams County, ID 31 km (19 mi) WSW of here earthquakes near Adams County
Washington County, ID 39 km (24 mi) N of here earthquakes near Washington County
Baker County, OR 68 km (42 mi) E of here earthquakes near Baker County
Payette County, ID 88 km (55 mi) N of here earthquakes near Payette County
Gem County, ID 89 km (55 mi) NNW of here earthquakes near Gem County
Wallowa County, OR 93 km (58 mi) SSE of here earthquakes near Wallowa County

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

Aftershocks so far

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

  1. 2.3 9 km E of Halfway, Oregon
  2. 2.1 17 km NNW of Halfway, Oregon
  3. 1.9 17 km NW of New Meadows, Idaho
  4. 2.1 19 km NNW of Halfway, Oregon
  5. 2.4 16 km E of Richland, Oregon
  6. 2.2 11 km ESE of Halfway, Oregon
  7. 1.5 20 km NW of New Meadows, Idaho
  8. 2.0 17 km NW of New Meadows, Idaho
  9. 2.4 21 km NW of New Meadows, Idaho
  10. 2.3 13 km NNW of New Meadows, Idaho

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.