QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6ml

3 km ENE of Echo Lake, Washington

· 25 km deep · released about 8.4 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Snohomish County 34 kmKing County 36 kmKitsap County 52 kmIsland County 64 kmSkagit County 79 kmPierce County 84 kmMason County 101 kmChelan County 104 kmSan Juan 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 1.6 (ml)
Depth
25 km below the surface
Felt
no reports yet
Nearest
Snohomish County, 34 km NNE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 568 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 8.4 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 1,800,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,300,000× the energy of this one
  3. Around the size people start to feel M 3.0 110× the energy of this one
  4. This earthquake M 1.6 about 8.4 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 47.7983, -122.0027. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Snohomish County, WA 34 km (21 mi) SSW of here earthquakes near Snohomish County
King County, WA 36 km (23 mi) NNW of here earthquakes near King County
Kitsap County, WA 52 km (32 mi) ENE of here earthquakes near Kitsap County
Island County, WA 64 km (40 mi) SE of here earthquakes near Island County
Skagit County, WA 79 km (49 mi) S of here earthquakes near Skagit County
Pierce County, WA 84 km (52 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

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

  1. 1.6 1 km ESE of Issaquah, Washington
  2. 1.6 2 km ENE of Granite Falls, Washington
  3. 1.5 1 km ENE of Bainbridge Island, Washington
  4. 1.9 2 km NNE of Esperance, Washington
  5. 2.3 0 km SSW of Boulevard Park, Washington
  6. 2.2 1 km NNE of Carnation, Washington
  7. 1.5 1 km N of Boulevard Park, Washington
  8. 1.7 3 km ENE of Granite Falls, Washington
  9. 1.7 6 km ENE of Lake Roesiger, Washington
  10. 1.7 1 km NNE of Woods Creek, Washington
  11. 1.6 0 km N of Boulevard Park, Washington
  12. 2.8 0 km S of Boulevard Park, Washington
  13. 2.1 0 km SSW of Boulevard Park, Washington
  14. 2.2 2 km SSE of Carnation, Washington
  15. 1.6 0 km WSW of Boulevard Park, 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 27,000 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.