Earthquake · reviewed by a seismologist
M 0.8ml
26 km NNE of Packwood, Washington
- When
- Magnitude
- M 0.8 (ml)
- Depth
- 3.3 km below the surface
- Felt
- no reports yet
- Nearest
- Pierce County, 50 km WNW
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 23 hours 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 0.53 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 1.8 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 29,000,000× the energy of this one
- Magna, Utah 2020 M 5.7 20,000,000× the energy of this one
- Around the size people start to feel M 3.0 1,800× the energy of this one
- This earthquake M 0.8 about 0.53 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 46.8372, -121.5718. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction | |
|---|---|---|---|
| Pierce County, WA | 50 km (31 mi) | ESE of here | earthquakes near Pierce County |
| Lewis County, WA | 68 km (42 mi) | ENE of here | earthquakes near Lewis County |
| Kittitas County, WA | 75 km (47 mi) | WSW of here | earthquakes near Kittitas County |
| King County, WA | 75 km (47 mi) | SSE of here | earthquakes near King County |
| Yakima County, WA | 76 km (47 mi) | NW of here | earthquakes near Yakima County |
| Skamania County, WA | 95 km (59 mi) | NNE of here | earthquakes near Skamania 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.
- 0.3 11 km SSE of Carbonado, Washington
- 0.3 18 km SSE of Carbonado, Washington
- 0.1 20 km SE of Carbonado, Washington
- 0.3 12 km NNE of Ashford, Washington
- 1.3 14 km NNE of Ashford, 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.