QuakeIndex

Earthquake · reviewed by a seismologist

M 2.2ml

15 km NE of May Creek, Washington

· 7.0 km deep · released about 56 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Snohomish County 20 kmKing County 57 kmSkagit County 62 kmChelan County 70 kmIsland County 87 kmKitsap County 90 kmWhatcom County 100 kmPierce County 111 kmKittitas County 114 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 2.2 (ml)
Depth
7.0 km below the surface
Felt
4 reports · strongest reported intensity III
Nearest
Snohomish County, 20 km WNW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 2635 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 4 people have reported feeling it to USGS.

How big was it?

This earthquake released about 56 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.2 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 270,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 190,000× the energy of this one
  3. Around the size people start to feel M 3.0 17× the energy of this one
  4. This earthquake M 2.2 about 56 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 47.9638, -121.5398. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Snohomish County, WA 20 km (12 mi) ESE of here earthquakes near Snohomish County
King County, WA 57 km (35 mi) NNE of here earthquakes near King County
Skagit County, WA 62 km (39 mi) SSE of here earthquakes near Skagit County
Chelan County, WA 70 km (43 mi) W of here earthquakes near Chelan County
Island County, WA 87 km (54 mi) ESE of here earthquakes near Island County
Kitsap County, WA 90 km (56 mi) ENE of here earthquakes near Kitsap County

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

Aftershocks so far

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

  1. 1.7 1 km NE of Granite Falls, Washington
  2. 2.2 2 km ESE of Duvall, Washington
  3. 1.6 6 km NE of Fall City, Washington
  4. 2.0 3 km E of Granite Falls, Washington
  5. 1.8 4 km N of Duvall, Washington
  6. 1.8 5 km NNE of Duvall, Washington
  7. 1.6 5 km WSW of Darrington, Washington
  8. 1.6 6 km NE of Fall City, Washington
  9. 1.6 3 km E of Cathcart, Washington
  10. 2.1 3 km ENE of Granite Falls, Washington
  11. 1.6 4 km ESE of Carnation, Washington
  12. 1.6 3 km ENE of Cathcart, Washington
  13. 1.7 2 km ENE of Granite Falls, Washington
  14. 2.8 8 km NNE of Snoqualmie, Washington
  15. 1.8 3 km E of Cathcart, 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

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