explosion · reviewed by a seismologist
M 2.1ml
2 km N of Highland, Washington
- When
- Magnitude
- M 2.1 (ml)
- Depth
- -0.2 km below the surface
- Felt
- 3 reports · strongest reported intensity III
- Nearest
- Benton County, 32 km WNW
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 89 days ago
This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 3 people have reported feeling it to USGS.
USGS catalogues this as explosion, not an earthquake.
How big was it?
This earthquake released about 37 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 5.8 410,000× the energy of this one
- Magna, Utah 2020 M 5.7 290,000× the energy of this one
- Around the size people start to feel M 3.0 26× the energy of this one
- This earthquake M 2.1 about 37 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 46.1552, -119.1140. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction | |
|---|---|---|---|
| Benton County, WA | 32 km (20 mi) | ESE of here | earthquakes near Benton County |
| Franklin County, WA | 45 km (28 mi) | SSW of here | earthquakes near Franklin County |
| Walla Walla County, WA | 50 km (31 mi) | WSW of here | earthquakes near Walla Walla County |
| Umatilla County, OR | 69 km (43 mi) | NNW of here | earthquakes near Umatilla County |
| Morrow County, OR | 90 km (56 mi) | NNE of here | earthquakes near Morrow County |
| Columbia County, WA | 94 km (58 mi) | W of here | earthquakes near Columbia County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
5 earthquakes have been recorded within 50 km since this one.
- 1.7 12 km NE of Hermiston, Oregon
- 1.9 11 km W of Highland, Washington
- 1.7 11 km W of Highland, Washington
- 1.5 14 km NE of Hermiston, Oregon
- 1.8 4 km SSW of Wallula, Washington
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.