QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6ml

6 km W of Edison, Washington

· 20 km deep · released about 6.4 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N San Juan County 42 kmIsland County 45 kmSkagit County 53 kmWhatcom County 60 kmSnohomish County 79 kmKitsap County 102 kmJefferson County 111 kmClallam County 112 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
20 km below the surface
Felt
1 report · strongest reported intensity II
Nearest
San Juan County, 42 km W
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 874 days ago

This was a minor earthquake. Quakes this small are rarely felt and do not cause damage. 1 person has reported feeling it to USGS.

How big was it?

This earthquake released about 6.4 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 2,400,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,700,000× the energy of this one
  3. Around the size people start to feel M 3.0 150× the energy of this one
  4. This earthquake M 1.6 about 6.4 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 48.5537, -122.5328. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
San Juan County, WA 42 km (26 mi) E of here earthquakes near San Juan County
Island County, WA 45 km (28 mi) NNE of here earthquakes near Island County
Skagit County, WA 53 km (33 mi) W of here earthquakes near Skagit County
Whatcom County, WA 60 km (38 mi) WSW of here earthquakes near Whatcom County
Snohomish County, WA 79 km (49 mi) NW of here earthquakes near Snohomish County
Kitsap County, WA 102 km (63 mi) N of here earthquakes near Kitsap County

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

Aftershocks so far

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

  1. 1.8 8 km SSW of Birch Bay, Washington
  2. 2.1 6 km WNW of Coupeville, Washington
  3. 1.8 2 km ESE of Mount Vernon, Washington
  4. 2.4 2 km ESE of Mount Vernon, Washington
  5. 2.2 2 km SE of Mount Vernon, Washington
  6. 2.9 2 km ESE of Mount Vernon, Washington
  7. 1.5 3 km N of Lyman, Washington
  8. 1.5 11 km WNW of Ault Field, Washington
  9. 2.3 3 km SW of Oak Harbor, Washington
  10. 1.6 7 km NNE of Sedro-Woolley, Washington
  11. 1.5 5 km WSW of Ferndale, Washington
  12. 2.1 8 km E of Port Townsend, Washington
  13. 2.5 6 km SE of Coupeville, Washington
  14. 1.5 8 km WNW of La Conner, Washington
  15. 1.7 4 km W of Mount Vernon, 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.