explosion · reviewed by a seismologist
M 1.9ml
4 km SE of Pine Grove, Oregon
- When
- Magnitude
- M 1.9 (ml)
- Depth
- -1.5 km below the surface
- Felt
- no reports yet
- Nearest
- Wasco County, 15 km NE
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 872 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 20 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.
- Mineral, Virginia 2011 M 5.8 760,000× the energy of this one
- Magna, Utah 2020 M 5.7 540,000× the energy of this one
- Around the size people start to feel M 3.0 48× the energy of this one
- This earthquake M 1.9 about 20 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 45.0832, -121.3153. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction | |
|---|---|---|---|
| Wasco County, OR | 15 km (9 mi) | SW of here | earthquakes near Wasco County |
| Jefferson County, OR | 50 km (31 mi) | NNW of here | earthquakes near Jefferson County |
| Hood River County, OR | 55 km (34 mi) | SSE of here | earthquakes near Hood River County |
| Sherman County, OR | 61 km (38 mi) | SW of here | earthquakes near Sherman County |
| Clackamas County, OR | 70 km (43 mi) | E of here | earthquakes near Clackamas County |
| Gilliam County, OR | 88 km (55 mi) | WSW of here | earthquakes near Gilliam County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
12 earthquakes have been recorded within 50 km since this one.
- 0.0 7 km ENE of Government Camp, Oregon
- 1.9 8 km NNE of Government Camp, Oregon
- 1.9 8 km NNE of Government Camp, Oregon
- 1.6 5 km ENE of Government Camp, Oregon
- 1.8 3 km NW of Madras, Oregon
- 1.6 7 km ENE of Government Camp, Oregon
- 1.6 2 km E of Government Camp, Oregon
- 1.8 2 km E of Government Camp, Oregon
- 1.6 1 km E of Government Camp, Oregon
- 1.8 8 km NNE of Government Camp, Oregon
- 1.9 3 km NE of Government Camp, Oregon
- 1.7 2 km NNE of Wapanitia, 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.