QuakeIndex

Earthquake · reviewed by a seismologist

M 2.0ml

2 km NNW of Roosevelt, Washington

· 18 km deep · released about 29 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Snohomish County 25 kmKing County 49 kmIsland County 55 kmKitsap County 56 kmSkagit County 66 kmPierce County 97 kmSan Juan County 103 kmWhatcom County 104 kmChelan County 105 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 2.0 (ml)
Depth
18 km below the surface
Felt
no reports yet
Nearest
Snohomish County, 25 km NE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 120 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 29 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 3.0 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 520,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 370,000× the energy of this one
  3. Around the size people start to feel M 3.0 33× the energy of this one
  4. This earthquake M 2.0 about 29 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 47.9162, -122.0273. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Snohomish County, WA 25 km (15 mi) SW of here earthquakes near Snohomish County
King County, WA 49 km (31 mi) NNW of here earthquakes near King County
Island County, WA 55 km (34 mi) ESE of here earthquakes near Island County
Kitsap County, WA 56 km (35 mi) ENE of here earthquakes near Kitsap County
Skagit County, WA 66 km (41 mi) SSW of here earthquakes near Skagit County
Pierce County, WA 97 km (60 mi) N of here earthquakes near Pierce County

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

Aftershocks so far

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

  1. 1.7 2 km E of Granite Falls, Washington
  2. 1.1 6 km NE of Oso, Washington
  3. 1.2 1 km NW of Lake Marcel-Stillwater, Washington
  4. 1.7 0 km W of Lake Stickney, Washington
  5. 2.1 10 km ENE of Fall City, Washington
  6. 1.1 2 km NW of Lake Marcel-Stillwater, Washington
  7. 0.8 4 km E of Carnation, Washington
  8. 2.0 3 km ESE of East Renton Highlands, Washington
  9. 0.5 2 km S of Union Hill-Novelty Hill, Washington
  10. 1.6 3 km WSW of Lake Cavanaugh, Washington
  11. 2.1 4 km NNE of Snoqualmie, Washington
  12. 1.7 2 km NNE of May Creek, Washington
  13. 1.5 5 km SSW of Monroe, Washington
  14. 1.5 2 km E of Granite Falls, Washington
  15. 1.5 2 km WNW of Ames Lake, 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 7,700 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.