QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6ml

2 km E of Snoqualmie, Washington

· 17 km deep · released about 7.6 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N King County 5 kmSnohomish County 59 kmPierce County 59 kmKitsap County 65 kmKittitas County 95 kmChelan County 95 kmIsland County 96 kmThurston County 102 kmMason County 106 km
Distance rings around the epicentre, with the nearest towns at their true direction and later quakes as coloured dots. Not a shaking map — see the USGS ShakeMap for that.
When
Magnitude
M 1.6 (ml)
Depth
17 km below the surface
Felt
no reports yet
Nearest
King County, 5 km SW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2305 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 7.6 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.

  1. Mineral, Virginia 2011 M 5.8 2,000,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,400,000× the energy of this one
  3. Around the size people start to feel M 3.0 130× the energy of this one
  4. This earthquake M 1.6 about 7.6 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 47.5265, -121.7933. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
King County, WA 5 km (3 mi) NE of here earthquakes near King County
Snohomish County, WA 59 km (37 mi) S of here earthquakes near Snohomish County
Pierce County, WA 59 km (37 mi) NNE of here earthquakes near Pierce County
Kitsap County, WA 65 km (41 mi) E of here earthquakes near Kitsap County
Kittitas County, WA 95 km (59 mi) WNW of here earthquakes near Kittitas County
Chelan County, WA 95 km (59 mi) WSW of here earthquakes near Chelan County

Places and coordinates from the US Census Bureau Gazetteer (2024). Distances are from the epicentre.

Aftershocks so far

60 earthquakes have been recorded within 50 km since this one.

  1. 1.9 3 km NNW of Fall City, Washington
  2. 1.8 8 km E of Tanner, Washington
  3. 2.8 11 km E of Tanner, Washington
  4. 1.5 1 km NE of Ames Lake, Washington
  5. 1.6 0 km ESE of Buckley, Washington
  6. 1.9 11 km SE of Riverbend, Washington
  7. 2.2 12 km ESE of Riverbend, Washington
  8. 2.3 4 km SE of Black Diamond, Washington
  9. 1.9 3 km SSE of Sultan, Washington
  10. 1.8 12 km W of Greenwater, Washington
  11. 1.7 1 km N of Kingsgate, Washington
  12. 1.9 11 km ESE of Enumclaw, Washington
  13. 2.0 2 km N of Lakeland South, Washington
  14. 1.9 5 km NNW of North Sultan, Washington
  15. 1.7 2 km SW of Carnation, 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.

For this area

The largest earthquake within 50 km in our catalogue was M 4.6 on 2019-07-12 — it released about 30,000 times the energy of this one.

From the QuakeIndex catalogue, built from the USGS FDSN event service.

On USGS

QuakeIndex does not issue warnings. For earthquake early warning see ShakeAlert.