Earthquake · reviewed by a seismologist
M 2.1ml
19 km NNW of Halfway, Oregon
- When
- Magnitude
- M 2.1 (ml)
- Depth
- 6.9 km below the surface
- Felt
- no reports yet
- Nearest
- Baker County, 51 km SW
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 501 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 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.
- Mineral, Virginia 2011 M 5.8 320,000× the energy of this one
- Magna, Utah 2020 M 5.7 230,000× the energy of this one
- Around the size people start to feel M 3.0 20× the energy of this one
- 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.
Where
Epicentre 45.0327, -117.2453. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction | |
|---|---|---|---|
| Baker County, OR | 51 km (32 mi) | NE of here | earthquakes near Baker County |
| Wallowa County, OR | 63 km (39 mi) | S of here | earthquakes near Wallowa County |
| Adams County, ID | 64 km (40 mi) | WNW of here | earthquakes near Adams County |
| Union County, OR | 66 km (41 mi) | ESE of here | earthquakes near Union County |
| Washington County, ID | 74 km (46 mi) | NNW of here | earthquakes near Washington County |
| Payette County, ID | 121 km (75 mi) | NNW of here | earthquakes near Payette County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
4 earthquakes have been recorded within 50 km since this one.
- 2.3 9 km E of Halfway, Oregon
- 2.1 17 km NNW of Halfway, Oregon
- 1.9 26 km SW of Richland, Oregon
- 2.1 19 km NE of Baker 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
- The official USGS event page — the source of record for every value above
- Did you feel it? Report it to USGS — reports go to USGS, not to us
- ShakeMap for this event, when USGS has produced one
QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.