explosion · reviewed by a seismologist
M 1.2ml
12 km S of Rainier, Washington
- When
- Magnitude
- M 1.2 (ml)
- Depth
- -0.3 km below the surface
- Felt
- no reports yet
- Nearest
- Thurston County, 21 km NW
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 22 hours 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 2 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.2 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 7,400,000× the energy of this one
- Magna, Utah 2020 M 5.7 5,200,000× the energy of this one
- Around the size people start to feel M 3.0 470× the energy of this one
- This earthquake M 1.2 about 2 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 46.7818, -122.6605. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction | |
|---|---|---|---|
| Thurston County, WA | 21 km (13 mi) | SE of here | earthquakes near Thurston County |
| Lewis County, WA | 31 km (19 mi) | NW of here | earthquakes near Lewis County |
| Pierce County, WA | 49 km (30 mi) | SW of here | earthquakes near Pierce County |
| Cowlitz County, WA | 65 km (40 mi) | N of here | earthquakes near Cowlitz County |
| Mason County, WA | 74 km (46 mi) | SSE of here | earthquakes near Mason County |
| Wahkiakum County, WA | 80 km (50 mi) | NE of here | earthquakes near Wahkiakum 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.
- 1.0 6 km SE of McCleary, Washington
- 0.7 5 km SSW of Morton, Washington
- 2.1 3 km NNW of Kapowsin, Washington
- 0.7 9 km SSE of Shelton, Washington
- 1.0 4 km WSW of Mineral, 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.