QuakeIndex

Earthquake · reviewed by a seismologist

M 1.5ml

1 km E of Edmonds, Washington

· 27 km deep · released about 5.6 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Kitsap County 29 kmIsland County 45 kmSnohomish County 52 kmKing County 53 kmMason County 80 kmPierce County 86 kmSkagit County 86 kmJefferson County 87 kmSan Juan County 95 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 1.5 (ml)
Depth
27 km below the surface
Felt
no reports yet
Nearest
Kitsap County, 29 km SW
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 154 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 5.6 lb of TNT. Magnitude is logarithmic: each whole step up releases about 32 times more energy, so a magnitude 2.5 would have released about 32 times as much.

  1. Mineral, Virginia 2011 M 5.8 2,700,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,900,000× the energy of this one
  3. Around the size people start to feel M 3.0 170× the energy of this one
  4. This earthquake M 1.5 about 5.6 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 47.8108, -122.3590. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Kitsap County, WA 29 km (18 mi) NE of here earthquakes near Kitsap County
Island County, WA 45 km (28 mi) SSE of here earthquakes near Island County
Snohomish County, WA 52 km (32 mi) WSW of here earthquakes near Snohomish County
King County, WA 53 km (33 mi) NW of here earthquakes near King County
Mason County, WA 80 km (49 mi) NE of here earthquakes near Mason County
Pierce County, WA 86 km (53 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

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

  1. 1.7 2 km E of Granite Falls, Washington
  2. 1.2 1 km NW of Lake Marcel-Stillwater, Washington
  3. 1.7 0 km W of Lake Stickney, Washington
  4. 1.1 2 km NW of Lake Marcel-Stillwater, Washington
  5. 0.8 4 km E of Carnation, Washington
  6. 2.0 3 km ESE of East Renton Highlands, Washington
  7. 0.5 2 km S of Union Hill-Novelty Hill, Washington
  8. 1.5 5 km SSW of Monroe, Washington
  9. 1.5 2 km E of Granite Falls, Washington
  10. 1.6 8 km S of Port Hadlock-Irondale, Washington
  11. 1.5 2 km WNW of Ames Lake, Washington
  12. 1.7 2 km NNW of Enetai, Washington
  13. 1.6 5 km SSE of Quilcene, Washington
  14. 1.5 5 km WSW of Mercer Island, Washington
  15. 1.5 2 km ENE 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 40,000 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.