QuakeIndex

Earthquake · reviewed by a seismologist

M 1.6ml

7 km WSW of Coupeville, Washington

· 24 km deep · released about 8.7 lb of TNT

Felt it? Tell USGS Check my area
10 km30 km60 km120 km N Island County 9 kmSan Juan County 42 kmKitsap County 62 kmJefferson County 70 kmSnohomish County 77 kmSkagit County 79 kmClallam County 83 kmMason County 98 kmWhatcom County 101 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
24 km below the surface
Felt
no reports yet
Nearest
Island County, 9 km ESE
Status
Reviewed by a seismologist

USGS · last changed by USGS · we first saw it 1508 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 8.7 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 1,700,000× the energy of this one
  2. Magna, Utah 2020 M 5.7 1,200,000× 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 8.7 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 48.1912, -122.7830. Map © OpenStreetMap contributors.

Nearby places

PlaceDistanceDirection
Island County, WA 9 km (6 mi) WNW of here earthquakes near Island County
San Juan County, WA 42 km (26 mi) SE of here earthquakes near San Juan County
Kitsap County, WA 62 km (39 mi) N of here earthquakes near Kitsap County
Jefferson County, WA 70 km (44 mi) NE of here earthquakes near Jefferson County
Snohomish County, WA 77 km (48 mi) WNW of here earthquakes near Snohomish County
Skagit County, WA 79 km (49 mi) WSW of here earthquakes near Skagit County

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

Aftershocks so far

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

  1. 1.5 3 km SSE of Quilcene, Washington
  2. 1.7 6 km S of Port Ludlow, Washington
  3. 1.7 3 km NNW of Edmonds, Washington
  4. 1.6 4 km NW of Edmonds, Washington
  5. 1.7 8 km WNW of Friday Harbor, Washington
  6. 2.6 21 km S of Friday Harbor, Washington
  7. 2.2 6 km WSW of Lofall, Washington
  8. 1.7 4 km SE of Quilcene, Washington
  9. 1.6 4 km SE of Quilcene, Washington
  10. 1.7 Washington
  11. 3.1 6 km N of Camano, Washington
  12. 2.3 6 km SE of Port Ludlow, Washington
  13. 1.9 4 km SW of Port Ludlow, Washington
  14. 1.5 Washington
  15. 1.6 8 km WNW of Friday Harbor, 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.