Earthquake · reviewed by a seismologist
M 1.6md
6 km NE of Rochester, Washington
- When
- Magnitude
- M 1.6 (md)
- Depth
- 5.8 km below the surface
- Felt
- no reports yet
- Nearest
- Thurston County, 18 km ENE
- Status
- Reviewed by a seismologist
USGS · last changed by USGS · we first saw it 32 days 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 8.7 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.6 would have released about 32 times as much.
- Mineral, Virginia 2011 M 5.8 1,700,000× the energy of this one
- Magna, Utah 2020 M 5.7 1,200,000× the energy of this one
- Around the size people start to feel M 3.0 110× the energy of this one
- This earthquake M 1.6 about 8.7 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 46.8658, -123.0507. Map © OpenStreetMap contributors.
Nearby places
| Place | Distance | Direction | |
|---|---|---|---|
| Thurston County, WA | 18 km (11 mi) | WSW of here | earthquakes near Thurston County |
| Mason County, WA | 55 km (34 mi) | S of here | earthquakes near Mason County |
| Lewis County, WA | 60 km (38 mi) | WNW of here | earthquakes near Lewis County |
| Grays Harbor County, WA | 65 km (40 mi) | ESE of here | earthquakes near Grays Harbor County |
| Pacific County, WA | 66 km (41 mi) | ENE of here | earthquakes near Pacific County |
| Wahkiakum County, WA | 70 km (43 mi) | NNE of here | earthquakes near Wahkiakum County |
Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.
Aftershocks so far
3 earthquakes have been recorded within 50 km since this one.
- 1.0 6 km SE of McCleary, Washington
- 0.7 9 km SSE of Shelton, Washington
- 1.2 12 km S of Rainier, 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.