QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6ml

1 km E of Clyde Hill, Washington

· 29 km deep · released about 7.1 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N King County 31 kmKitsap County 34 kmSnohomish County 57 kmPierce County 64 kmIsland County 69 kmMason County 80 kmThurston County 91 kmSkagit County 100 kmJefferson County 101 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
29 km below the surface
Felt
1 report
Nearest
King County, 31 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 221 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 1 person has reported feeling it to USGS.

How big was it?

This earthquake released about 7.1 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 2,100,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,500,000× 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 7.1 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 47.6307, -122.1968. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
King County, WA 31 km (19 mi) WNW of here earthquakes near King County
Kitsap County, WA 34 km (21 mi) E of here earthquakes near Kitsap County
Snohomish County, WA 57 km (35 mi) SW of here earthquakes near Snohomish County
Pierce County, WA 64 km (40 mi) N of here earthquakes near Pierce County
Island County, WA 69 km (43 mi) SSE of here earthquakes near Island County
Mason County, WA 80 km (50 mi) ENE of here earthquakes near Mason County

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

Aftershocks so far

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

  1. 2.0 3 km ESE of East Renton Highlands, Washington
  2. 0.5 2 km S of Union Hill-Novelty Hill, Washington
  3. 2.1 4 km SW of Wilderness Rim, Washington
  4. 2.1 4 km NNE of Snoqualmie, Washington
  5. 1.6 1 km NNE of Maple Valley, Washington
  6. 1.7 2 km NNE of May Creek, Washington
  7. 1.5 5 km SSW of Monroe, Washington
  8. 1.5 2 km WNW of Ames Lake, Washington
  9. 1.7 2 km NNW of Enetai, Washington
  10. 1.9 6 km SSE of Lea Hill, Washington
  11. 1.5 5 km WSW of Mercer Island, Washington
  12. 2.2 2 km WSW of Wauna, Washington
  13. 1.6 2 km SSW of Lake Forest Park, Washington
  14. 2.3 5 km SE of Kingston, Washington
  15. 1.6 9 km S of Lake Morton-Berrydale, 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 32,000 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.