QuakeIndex

explosion · reviewed by a seismologist

M 1.6ml

6 km ESE of Hobart, Washington

· -1.3 km deep · released about 6.6 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N King County 11 kmPierce County 44 kmKitsap County 63 kmSnohomish County 73 kmThurston County 88 kmKittitas County 97 kmMason County 97 kmLewis County 99 kmIsland County 102 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
-1.3 km below the surface
Felt
no reports yet
Nearest
King County, 11 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 3069 days 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 6.6 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 2,300,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,600,000× the energy of this one
  3. Around the size people start to feel M 3.0 140× the energy of this one
  4. This earthquake M 1.6 about 6.6 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 47.4030, -121.8897. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
King County, WA 11 km (7 mi) SSW of here earthquakes near King County
Pierce County, WA 44 km (27 mi) NNE of here earthquakes near Pierce County
Kitsap County, WA 63 km (39 mi) ESE of here earthquakes near Kitsap County
Snohomish County, WA 73 km (45 mi) S of here earthquakes near Snohomish County
Thurston County, WA 88 km (55 mi) NE of here earthquakes near Thurston County
Kittitas County, WA 97 km (60 mi) WNW of here earthquakes near Kittitas County

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

Aftershocks so far

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

  1. 2.1 4 km ENE of Lake Marcel-Stillwater, Washington
  2. 1.6 12 km NNE of Tanner, Washington
  3. 1.9 1 km NE of Tanner, Washington
  4. 1.7 9 km SE of Enumclaw, Washington
  5. 1.6 10 km ESE of Enumclaw, Washington
  6. 2.3 0 km ESE of Riverton, Washington
  7. 1.9 11 km ESE of Enumclaw, Washington
  8. 1.6 4 km WSW of Monroe, Washington
  9. 1.9 0 km SE of Normandy Park, Washington
  10. 1.8 1 km NE of Normandy Park, Washington
  11. 1.6 0 km E of Normandy Park, Washington
  12. 1.6 13 km S of Snoqualmie Pass, Washington
  13. 1.6 3 km W of Federal Way, Washington
  14. 1.6 11 km W of Greenwater, Washington
  15. 1.7 8 km SSW of Wilderness Rim, 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

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