explosion · reviewed by a seismologist
M 1.9ml
1 km NNE of Dallesport, Washington
- When
- Magnitude
- M 1.9 (ml)
- Depth
- -1.0 km below the surface
- Felt
- 1 report · strongest reported intensity II
- Nearest
- Hood River County, 40 km WSW
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 370 days ago
This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 1 person has reported feeling it to USGS.
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.
- Mineral, Virginia 2011 M 5.8 730,000× the energy of this one
- Magna, Utah 2020 M 5.7 520,000× the energy of this one
- Around the size people start to feel M 3.0 46× the energy of this one
- 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 45.6307, -121.1700. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction | |
|---|---|---|---|
| Hood River County, OR | 40 km (25 mi) | ENE of here | earthquakes near Hood River County |
| Klickitat County, WA | 40 km (25 mi) | SW of here | earthquakes near Klickitat County |
| Sherman County, OR | 46 km (29 mi) | NW of here | earthquakes near Sherman County |
| Wasco County, OR | 52 km (32 mi) | N of here | earthquakes near Wasco County |
| Skamania County, WA | 75 km (47 mi) | SE of here | earthquakes near Skamania County |
| Gilliam County, OR | 75 km (47 mi) | WNW of here | earthquakes near Gilliam County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
6 earthquakes have been recorded within 50 km since this one.
- 1.6 6 km SE of Odell, Oregon
- 1.7 3 km NE of Dallesport, Washington
- 1.9 5 km NW of White Salmon, Washington
- 1.8 4 km E of Dallesport, Washington
- 1.7 1 km SSE of Goldendale, Washington
- 1.7 6 km SE of Mosier, 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.