QuakeIndex

Earthquake · reviewed by a seismologist

M 2.0ml

8 km NE of Granite Falls, Washington

· 17 km deep · released about 36 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Snohomish County 14 kmSkagit County 40 kmIsland County 58 kmKing County 72 kmWhatcom County 78 kmKitsap County 79 kmSan Juan County 98 kmChelan County 100 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
17 km below the surface
Felt
3 reports · strongest reported intensity III
Nearest
Snohomish County, 14 km SE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1623 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 3 people have reported feeling it to USGS.

How big was it?

This earthquake released about 36 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 5.8 420,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 300,000× the energy of this one
  3. Around the size people start to feel M 3.0 27× the energy of this one
  4. This earthquake M 2.0 about 36 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 48.1405, -121.8945. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Snohomish County, WA 14 km (8 mi) NW of here earthquakes near Snohomish County
Skagit County, WA 40 km (25 mi) S of here earthquakes near Skagit County
Island County, WA 58 km (36 mi) E of here earthquakes near Island County
King County, WA 72 km (45 mi) N of here earthquakes near King County
Whatcom County, WA 78 km (49 mi) S of here earthquakes near Whatcom County
Kitsap County, WA 79 km (49 mi) NE of here earthquakes near Kitsap County

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

Aftershocks so far

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

  1. 1.9 4 km ENE of La Conner, Washington
  2. 1.7 1 km ENE of Granite Falls, Washington
  3. 1.6 7 km SSE of Concrete, Washington
  4. 1.6 2 km NNE of Woods Creek, Washington
  5. 1.5 Washington
  6. 1.6 4 km ENE of Lake Marcel-Stillwater, Washington
  7. 1.5 3 km ENE of Lake Marcel-Stillwater, Washington
  8. 1.7 1 km E of Granite Falls, Washington
  9. 1.6 2 km E of Granite Falls, Washington
  10. 1.8 8 km SSW of Sultan, Washington
  11. 2.3 3 km WNW of Duvall, Washington
  12. 1.8 2 km E of Granite Falls, Washington
  13. 1.6 Puget Sound region, Washington
  14. 1.5 4 km SSW of Clinton, Washington
  15. 1.6 2 km E of Granite Falls, 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 6,200 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.